U.S. patent application number 15/986308 was filed with the patent office on 2018-10-04 for additive carrier for spin on filters.
The applicant listed for this patent is FRAM GROUP IP LLC. Invention is credited to Donald W. Baldwin, JR., Christopher P. Montelauro.
Application Number | 20180280842 15/986308 |
Document ID | / |
Family ID | 48869352 |
Filed Date | 2018-10-04 |
United States Patent
Application |
20180280842 |
Kind Code |
A1 |
Baldwin, JR.; Donald W. ; et
al. |
October 4, 2018 |
ADDITIVE CARRIER FOR SPIN ON FILTERS
Abstract
An additive carrier for a spin-on filter is provided. The
additive carrier is positioned at an upstream side of the filter
and includes a basket defining an annular body. The annular body
includes a concentric opening extending therethrough, a
circumferentially extending recess configured to receive and store
an additive material and a plurality of flanges extending radially
within the recess, the flanges spaced apart in a circumferential
direction of the recess to form a plurality of sub-recesses.
Inventors: |
Baldwin, JR.; Donald W.;
(Louisville, KY) ; Montelauro; Christopher P.;
(Bowling Green, OH) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
FRAM GROUP IP LLC |
Lake Forest |
IL |
US |
|
|
Family ID: |
48869352 |
Appl. No.: |
15/986308 |
Filed: |
May 22, 2018 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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13748930 |
Jan 24, 2013 |
10005014 |
|
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15986308 |
|
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61592136 |
Jan 30, 2012 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
B01D 27/06 20130101;
B01D 2201/291 20130101; B01D 2239/04 20130101; B01D 37/025
20130101; F01M 2001/1014 20130101; B01D 27/103 20130101; F01M 9/02
20130101 |
International
Class: |
B01D 37/02 20060101
B01D037/02 |
Claims
1-20. (canceled)
21. An additive carrier for a spin-on filter, the additive carrier
comprising: a top wall including a retainer-receiving seat, an
upper planar surface, and an outer perimeter, the
retainer-receiving seat including: a bottom wall spaced apart from
the upper planar surface and formed to include an opening extending
through the bottom wall; and a frustoconical section positioned to
extend at least partially around the bottom wall, the frustoconical
section extending from the bottom wall to the upper planar surface;
and a cylindrical retaining wall coupled to the top wall along the
outer perimeter and extending downward from the upper planar
surface, the retaining wall defining a plurality of downwardly
extending projections and a plurality of gaps that are positioned
between adjacent projections, the projections circumferentially
spaced around the retaining wall, wherein the top wall and the
retaining wall together define a circumferentially extending bottom
recess configured to receive and store an additive material, and
the plurality of gaps are in fluid communication with the bottom
recess.
22. The additive carrier of claim 21, wherein a plurality of
flanges extend radially within the bottom recess and along the top
wall, and wherein the flanges are spaced apart in a circumferential
direction of the bottom recess to form a plurality of
sub-recesses.
23. The additive carrier of claim 22, wherein each gap is in fluid
communication with at least one of the sub-recess.
24. The additive carrier of claim 23, wherein a majority of the
flanges intersect with the projections of the retaining wall.
25. The additive carrier of claim 24, wherein the flanges extend
along the top wall from the bottom wall to the retaining wall.
26. The additive carrier of claim 22, wherein the upper planar
surface of the top wall and the bottom wall are spaced apart by a
distance, wherein the projections of the retaining wall extend to
the distance, and wherein the gaps are formed such that portions of
the retaining wall adjacent to the projections extend to less than
the distance.
27. The additive carrier of claim 26, wherein the flanges extend
from the top wall to the distance.
28. A spin-on filter comprising: a filter assembly; an additive
carrier comprising: a top wall including a retainer-receiving seat,
an upper planar surface, and an outer perimeter, the
retainer-receiving seat including: a bottom wall spaced apart from
the upper planar surface and formed to include an opening extending
through the bottom wall; and a frustoconical section positioned to
extend at least partially around the bottom wall, the frustoconical
section extending from the bottom wall to the upper planar surface;
and a cylindrical retaining wall coupled to the top wall along the
outer perimeter and extending downward from the upper planar
surface, the retaining wall defining a plurality of downwardly
extending projections and a plurality of gaps that are positioned
between adjacent projections, the projections circumferentially
spaced around the retaining wall, wherein the top wall and the
retaining wall together define a circumferentially extending bottom
recess configured to receive and store an additive material, and
the plurality of gaps are in fluid communication with the bottom
recess; and a retainer comprising: a first end; a second end spaced
apart from the first end; a bowl shaped section extending between
the first end and the second end; and an aperture formed in the
bowl shaped section, wherein the retainer is positioned within the
retainer-receiving seat of the additive carrier such that the
aperture is concentric with the opening, and the retainer is
coupled to the filter assembly to trap the additive carrier
relative to the filter assembly.
29. The spin-on filter of claim 28, wherein the additive material
is in a solid state.
30. The spin-on filter of claim 28, wherein a plurality of flanges
extend radially within the bottom recess and along the top wall,
and wherein the flanges are spaced apart in a circumferential
direction of the bottom recess to form a plurality of
sub-recesses.
31. The spin-on filter of claim 30, wherein each gap is in fluid
communication with at least one of the sub-recess.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] The present application is a continuation of U.S. patent
application Ser. No. 13/748,930 filed Jan. 24, 2013, the disclosure
of which is incorporated herein in its entirety. The present
application claims the benefit of U.S. Provisional Application Ser.
No. 61/592,136, filed on Jan. 30, 2012, and entitled "Additive
Carrier for Spin-On Filter," the disclosure of which is
incorporated herein in its entirety.
[0002] Reference is made to the following applications: U.S. patent
application Ser. No. 13/178,096 filed Jul. 7, 2011, which is a
divisional application of Ser. No. 12/030,595, filed Feb. 13, 2008,
now U.S. Pat. No. 7,998,346 and U.S. patent application Ser. No.
12/980,814, filed Dec. 29, 2010, the contents each of which are
incorporated herein by reference thereto.
BACKGROUND
[0003] The following description relates to additive carriers, and
more specifically, additive carriers for spin on filters.
[0004] A spin on filter is configured to filter contaminants from a
fluid passing through the filter. It may be desirable to deliver an
additive material to the fluid to improve performance
characteristics. However, there is only limited space available in
traditional spin on filters to provide a carrier to deliver the
additive material. Thus, in traditional filter arrangements, a
carrier is provided on a "clean side" of filter to deliver the
additive material to the fluid. That is, in traditional
configurations, an additive material is delivered to fluid after
the fluid has been filtered. One drawback of such a configuration
is that the fluid passing through the filter has not been treated
by the additive material. The untreated fluid may adversely affect
the service life of the filter.
[0005] In addition, during manufacturing, an additive material may
become heated and liquefied. As a result, during manufacturing, if
the orientation of the carrier is changed such that the carrier is
tilted in a certain direction, the additive material may flow out
of the carrier.
[0006] Accordingly, it may be desirable to provide an additive
carrier which may be integrated with a support structure of a spin
on filter on an upstream or "dirty" side of the filter, utilizing
existing space in the spin on filter. It may also be desirable to
provide a lid for the additive carrier to retain additive material
within the carrier during a manufacturing process while still
allowing the fluid to be filtered to communicate with the additive
material.
SUMMARY
[0007] According to one aspect, there is provided an additive
carrier for a spin-on filter. The additive carrier includes a
basket defining an annular body. The annular body includes a
concentric opening extending therethrough, a circumferentially
extending recess configured to receive and store an additive
material and a plurality of flanges extending radially within the
recess, the flanges spaced apart in a circumferential direction of
the recess to form a plurality of sub-recesses.
[0008] According to another aspect, there is provided a spin-on
filter. The spin-on filter includes a support structure including a
first end plate at a first end of the structure a second end plate
at a second end of the structure, and a central opening formed in
and extending though at least the first end plate. The first end of
the structure is an upstream end of the spin-on filter. The spin-on
filter further includes a filter medium disposed between the first
end plate and second end plate in a substantially cylindrical
configuration, a relief valve including a plurality of legs at
least partially seated in the central opening, and an additive
carrier positioned at the first end of the support structure. The
additive carrier includes a basket in the form of an annular body.
The annular body including a concentric opening extending
therethrough, a circumferentially extending recess configured to
receive and store an additive material, and a plurality of flanges
extending radially within the recess, the flanges spaced apart in a
circumferential direction of the recess to form a plurality of
sub-recesses.
[0009] The above described and other features are exemplified by
the following figures and detailed description.
DRAWINGS
[0010] Referring now to the figures, which are exemplary
embodiments, and wherein like elements are numbered alike:
[0011] FIG. 1 is a perspective view showing one side of a basket
according to an exemplary embodiment of the present invention;
[0012] FIG. 2 is a perspective view showing an opposite side of the
basket of FIG. 1;
[0013] FIG. 3 illustrates the basket of FIG. 1 assembled with a
retainer and a filter assembly according to an exemplary embodiment
of the present invention;
[0014] FIG. 4 illustrates the basket of FIG. 1 assembled with a
retainer and filter assembly according to an exemplary embodiment
of the present invention;
[0015] FIG. 5 is a perspective view of the basket of FIG. 1 and a
retainer assembled with a filter assembly according to an exemplary
embodiment of the present invention;
[0016] FIG. 6 is a perspective view of the basket of FIG. 1
assembled with a retainer according to another exemplary embodiment
of the present invention;
[0017] FIG. 7 is a perspective view showing one surface of a basket
according to a second exemplary embodiment of the present
invention;
[0018] FIG. 8 is a perspective view showing an opposite surface of
the basket of FIG. 7;
[0019] FIG. 9 is a perspective view of the basket of FIG. 7
assembled with a retainer according to the second exemplary
embodiment of the present invention;
[0020] FIG. 10 is a perspective view showing a side profile of the
basket of FIG. 7 assembled with a retainer according to the second
exemplary embodiment of the present invention;
[0021] FIG. 11 is a perspective view of the basket of FIG. 7
assembled with a retainer and a filter assembly according to the
second exemplary embodiment of the present invention;
[0022] FIG. 12 is a perspective view showing one surface of a
basket according to a third exemplary embodiment of the present
invention;
[0023] FIG. 13 is a perspective view showing an opposite surface of
the basket of FIG. 12;
[0024] FIG. 14 is a perspective view showing a side profile of the
basket of FIG. 12;
[0025] FIG. 15 is a perspective view of the basket of FIG. 12
assembled with a retainer according to the third exemplary
embodiment of the present invention;
[0026] FIG. 16 is a perspective view showing a side profile of the
basket of FIG. 12 assembled with a retainer according to the third
exemplary embodiment of the present invention;
[0027] FIG. 17 is a perspective view showing the basket of FIG. 12
assembled with a retainer and a filter assembly according to the
third exemplary embodiment of the present invention;
[0028] FIG. 18 is a perspective view showing one surface of a
basket according to a fourth exemplary embodiment of the present
invention;
[0029] FIG. 19 is a perspective view showing an opposite surface of
the basket of FIG. 18;
[0030] FIG. 20 is a perspective view showing a side profile of the
basket of FIG. 18;
[0031] FIG. 21 is a perspective view of the basket of FIG. 18
assembled with a retainer according to the fourth exemplary
embodiment of the present invention;
[0032] FIG. 22 is a perspective view showing the basket of FIG. 18
assembled with a retainer and a filter assembly according to the
fourth exemplary embodiment of the present invention;
[0033] FIG. 23 is a perspective view showing one side of a basket
according to a fifth exemplary embodiment of the present
invention;
[0034] FIG. 24 is a perspective view an opposite side of the basket
of FIG. 23;
[0035] FIG. 25 is a perspective view of one side of a basket
according to a sixth exemplary embodiment of the present
invention;
[0036] FIG. 26 is a perspective view of the basket of FIG. 25
showing hidden surfaces according to the sixth exemplary embodiment
of the present invention;
[0037] FIG. 27 is a perspective view of a basket according to a
seventh exemplary embodiment of the present invention;
[0038] FIG. 28 is a perspective view of one side of a basket
according to an eighth exemplary embodiment of the present
invention;
[0039] FIG. 29 is a perspective view showing a portion of a side
profile of the basket of FIG. 28;
[0040] FIG. 30 is a perspective view of a lid constructed in
accordance with an exemplary embodiment of the present invention
together with a basket;
[0041] FIG. 31 is a perspective view of the lid of FIG. 30 together
with a basket;
[0042] FIG. 32 is a perspective view of the lid of FIG. 30 together
with a basket and a retainer;
[0043] FIG. 33 is a perspective view of the lid of FIG. 30 together
with a basket, a retainer, and a filter assembly;
[0044] FIG. 34 is a perspective view a lid constructed in
accordance with another exemplary embodiment of the present
invention;
[0045] FIG. 35 is a perspective view of the lid of FIG. 34 together
with a basket;
[0046] FIG. 36 is a perspective view of the lid of FIG. 34 together
with a basket and a retainer; and
[0047] FIG. 37 is a perspective view of the lid of FIG. 34 together
with a basket, a retainer, and a filter assembly.
DETAILED DESCRIPTION
[0048] With reference to the figures, a carrier assembly may
include a basket and a retainer. A basket constructed in accordance
with a first exemplary embodiment of the present invention is
indicated generally at 110. With reference to FIGS. 1-3, the basket
110 is in the form of a generally annular shaped body 112 having a
concentric annular opening 114 formed therethrough.
[0049] The body 112 includes a first side, referred to herein as a
retainer side 116, that is configured to generally face a retainer
118. In an exemplary embodiment, the retainer side acts as a seat
for the retainer 118. The body 112 also includes a second side,
referred to herein as an additive storage side 120, opposite to the
retainer side 116, configured to store an additive material
122.
[0050] With reference to FIGS. 1 and 3, according to an exemplary
embodiment of the present invention, the retainer side 116 of the
basket 110 includes a first recess 124. The first recess 124 has an
annular shape and extends within the body 112. The first recess 124
is configured to receive at least a portion of the retainer 118 and
may act as a seat for the retainer 118. The first recess 124 is
defined by a generally frustoconical section 126 of the annular
body 112 extending between a first axial position and a second
axial position. The frustoconical section 126 has a first diameter
at the first axial position and a second diameter at the second
axial position. The first diameter is greater than the second
diameter.
[0051] Further, in the exemplary embodiment of FIG. 1, the annular
body 112 includes a first annular plate 128 extending around an
outer circumference of the frustoconical section 126 at the first
axial position and a second annular plate 130 extending around an
inner circumference of the frustoconical section 126 at the second
axial position. The second annular plate 130 is proximate to the
opening 114. In an exemplary embodiment, the first annular plate
128, second annular plate 130 and frustoconical section 126 are
formed integrally with each other. However, these features may be
formed separately and fixed together using suitable fasteners.
[0052] The annular body 112 also includes a retaining wall 132
extending in an axial direction around an outer circumference of
the body 112. In the exemplary embodiment of FIG. 1, the retaining
wall 132 extends about an outer circumference of the first annular
plate 128. The retaining wall includes a plurality of axially
extending projections 134. In an exemplary embodiment, the
projections 134 are spaced apart in the circumferential direction,
and may be equally spaced apart.
[0053] With reference to FIG. 2, the additive storage side 120 of
the body 112 includes a second recess 136. The second recess 136 is
bound generally by the frustoconical section 126, first annular
plate 128 and retaining wall 132. The frustoconical section 126,
first annular plate 128 and retaining wall 132 define a profile of
the second recess 136.
[0054] A plurality of flanges 138 extend radially within the second
recess 136 on the additive storage side 120. The flanges 138 are
spaced in a circumferential direction of the body 112. In an
exemplary embodiment, the flanges 138 may be spaced equally apart
in the circumferential direction. The flanges 138 extend radially
across the second recess 136. In an exemplary embodiment, the
flanges 138 extend from the retaining wall 132 to a boundary
between the frustoconical section 126 and second annular plate 130.
It is understood that the present invention is not limited to such
a configuration, however, and that the flanges 138 may extend to
other points within the second recess 136.
[0055] The flanges 138 divide the second recess 136 into a
plurality of sub-recesses configured to store the additive material
122 (See FIG. 3). One side of the respective flanges 138 abuts the
additive storage side 120 of the basket 110 and matches the profile
of the second recess 136. The respective flanges 138 extend away
from the additive storage side 120 generally to the same axial
position such that the flanges 138 are of substantially equal
height.
[0056] The basket 110 may be assembled with a filter assembly 140
as shown in FIGS. 3-5. The filter assembly 140 includes a support
structure 142 having a first end 144, a second end 146 and an
opening 148 extending therethrough. The support structure 142 also
includes a first end plate 150 formed at the first end 144 and a
second end plate 152 formed at the second end 146. A filter medium
154 is disposed about the support structure 142 between the first
end plate 150 and second end plate 152.
[0057] A relief valve 156 is positioned within the opening 148 of
the support structure 142 and includes a plurality of legs 158
extending outwardly from the opening 148 at the first end 144 of
the support structure 142.
[0058] FIGS. 3-5 illustrate the basket 110 assembled together with
a retainer 118 and filter assembly 140. The retainer 118 generally
includes a first end 160 and a second end 162 opposite from the
first end 160. The first end 160 and second end 162 each include a
depression 164 which may be used for handling of the retainer 118.
A cup or bowl shaped portion 166 is formed in the retainer 118
between the first end 160 and second end 162.
[0059] The retainer 118 further includes an aperture 168 formed in
a central area thereof. When assembled with the filter 140 and
basket 110, the aperture 168 is concentric with the opening 114 of
the basket 110 and the opening 148 of the filter 140. The legs 158
of the relief valve 156 extend through the opening 114 of the
basket 110 and the aperture 168 of the retainer 118. A spring 170
may be positioned about the legs 158 of the relief valve 156.
[0060] In an exemplary embodiment, when assembled, the retainer 118
is positioned on the retainer side 116 of the basket 110. At least
one of the first annular plate 128, second annular plate and/or
frustoconical section 116 may act as a seat for the retainer
118.
[0061] The basket 110 and retainer 118 may be assembled on the
first end 144 of the filter assembly 140. At this end, the basket
110 and retainer 118 utilize existing space found in traditional
filter assemblies. Further, at the first end 144, the additive
material stored 122 stored in the basket 110 is in fluid
communication with a fluid to be filtered. That is, the basket 110
is positioned on a dirty side of the filter assembly 140 such that
additive material 122 may be added to dirty fluid, thereby treating
the fluid prior to passing though the filter assembly 140. Because
a fluid treated with the additive material is passed through the
filter assembly 140, the service life of the filter may be
improved.
[0062] FIG. 6 illustrates another exemplary embodiment of the
retainer 118 shown in FIGS. 1-5. Here, the retainer 118 is
dimensioned so as to not extend diametrically beyond an outer
circumference of the basket. This assembly may be used in smaller
filters where available space is further limited.
[0063] FIGS. 7 and 8 illustrate a basket 210 constructed according
to a second exemplary embodiment of the present invention. The
basket 210 is formed as an annular body 212 having a concentric
opening 214. With reference to FIG. 7, the body 212 includes a
retainer side 216. The retainer side 216 of the basket includes a
first recess 224. The first recess 224 extends from a first axial
position to a second axial position. An annular plate 230 is
disposed at the second axial position proximate to the opening 214.
The first recess 224 is bounded by two generally parallel sidewalls
240 and two side walls which in the form of a partial frustoconical
section 226.
[0064] On the retainer side 216, the annular body 212 presents a
top plate 228 at the first axial position. The first plate 228
includes two areas of increased radial thickness 242 between a
respective parallel sidewall and outer circumference of the annular
body 212. In addition, the annular body 212, on the retainer side
216, includes two depressions 244 positioned at diametrically
opposite sides, which may be used, for example, in handling of the
basket 210.
[0065] An axially extending retaining wall 232 extends about a
circumference of the annular body 212. The retaining wall 232
extends axially from the first axial position toward the second
axial position, and includes a plurality of axial projections 234
extending therefrom. In an exemplary embodiment, the projections
234 are equally spaced from each other in the circumferential
direction of the annular body 212. In illustrative embodiments and
as illustrated in FIGS. 7-8, the retaining wall 232 is formed to
include one or more flow apertures or gaps 246 between the axial
projections 234. In various embodiments a single gap 246 is formed
between two axial projections 234, and a plurality of gaps 246 are
formed around the circumference of the annular body 212. As with
the axial projections 234, the gaps 246 may be equally spaced apart
from each other in the circumferential direction of the annular
body 212.
[0066] With reference to FIG. 8, the annular body 212 includes an
additive storage side 220. The additive storage side 220 includes a
second recess 236 extending circumferentially around the additive
storage side 220 of the annular body 212. The second recess 236 is
formed by the retaining wall 232, partial frustoconical sections
226, parallel sidewalls 240, and the top plate 228. In illustrative
embodiments, the second recess 236 is accessible via at least the
gaps 246 formed in the retaining wall 232 between the axial
projections 234.
[0067] A plurality of radially extending flanges 238 is disposed
within the second recess 236. The flanges 238 are spaced apart in
the circumferential direction of the annular body 212 and divide
the second recess 236 into a plurality of sub-recesses 248. The
volume of a particular sub-recess 248 varies depending on the
location of the sub-recess 248. For example, a sub-recess 248
formed in the region of the generally parallel sidewalls 240 may
include at least a portion having a generally constant depth
corresponding to the top plate 228. Accordingly, sub-recesses 248
in this region have a greater volume than sub-recesses 248 formed
in a region where a depth of the sub-recesses 248 decreases along a
radially inward path, for example, in a region of the partial
frustoconical sections 226. The sub-recesses 248 are accessible to
fluid flowing through the spin-on filter by way of the gaps 246
formed in the retaining wall 232. In various embodiments, the
retaining wall 232 includes at least one gap 246 that corresponds
or is adjacent to each sub-recess 248. The additive material 122
stored in the sub-recesses 248 may be delivered to a fluid via the
gaps 246 formed in the retaining wall 232.
[0068] FIGS. 9 and 10 illustrate the basket 210 of FIGS. 7 and 8
assembled together with a retainer 218. The retainer 218 generally
includes a first end 260 and a second end 262 opposite from the
first end 260. The first end 260 and second end 262 each include a
depression 264 which may be used for handling of the retainer 218.
A cup or bowl shaped portion 266 is formed in the retainer 218
between the first end 260 and second end 262. The retainer 218
further includes an aperture 268 formed in a central area
thereof.
[0069] As shown in FIG. 11, the retainer 218 and basket 210 may be
assembled together with a filter assembly 140. The filter assembly
may the same filter assembly described above with reference to
FIGS. 3-5, and will be referred to using the same reference
numerals. However, the retainer 218 and basket 210 may be assembled
with other suitable filter assemblies.
[0070] When assembled with the filter assembly 140 and basket 210,
the retainer aperture 268 is concentric with the opening 214 of the
basket 210 and the opening 148 of the filter 140. The legs 158 of
the relief valve 156 extend through the opening 214 of the basket
210 and the retainer aperture 268 of the retainer 218. A spring 170
may be positioned about the legs 158 of the relief valve 156.
[0071] In an exemplary embodiment, when assembled, the retainer 218
is positioned on the retainer side 216 of the basket 210. At least
one of the top plate 228, annular plate 230 and/or partial
frustoconical sections 226 may act as a seat for the retainer
218.
[0072] With further reference to FIG. 11, the basket 210 and
retainer 218 may be assembled on the first end 144 of the filter
assembly 140. At this end, the basket 210 and retainer 218 utilize
existing space found in traditional filter assemblies. Further, at
the first end 144, additive material stored 122 stored in the
basket 210 may be delivered to a fluid to be filtered. That is, the
basket 210 is positioned on a dirty side of the filter such that
additive material 122 may be added to the dirty fluid, thereby
treating the fluid prior to passing though the filter assembly 140.
Because a fluid treated with the additive material 122 is passed
through the filter assembly 140, the service life of the filter may
be improved.
[0073] FIGS. 12-14 illustrate a basket 310 constructed according to
a third exemplary embodiment of the present invention. With
reference to FIGS. 12 and 13, the basket 310 includes an annular
body 312 having a retainer side 316 and an additive storage side
320. An opening 314 extends through the annular body 312 and is
concentric with the annular body 312.
[0074] With reference to FIG. 12, the retainer side 316 of the
annular body 312 includes a radially outer annular portion 340
extending to a first depth and a radially inner annular portion 342
extending to a second depth. The radially inner annular portion 342
is proximate to the opening 314. A pair of diametrically opposed
auxiliary wings 372 is disposed on the outer circumference of the
annular body 312.
[0075] With reference to FIG. 13, the additive storage side 320
includes a radially inner recess 324, a radially outer recess 336
and an auxiliary recess 374 disposed in each auxiliary wing 372.
The radially inner recess 324 is separated from the radially outer
recess 336 by a circumferentially extending partition 376 that is
concentric with the annular body 312 and the opening 314. An inner
wall 378 separates the radially inner recess 324 from the opening
314. Thus, the radially inner recess 324 is formed between the
inner wall 378 and the partition 376. A plurality of radially
extending, circumferentially spaced flanges 338 is positioned in
the radially inner recess 324. The flanges 338 extend between the
inner wall 378 and the partition 376 and divide the radially inner
recess 324 into a plurality of radially inner sub-recesses.
[0076] The radially outer recess 336 is formed between an outer
wall 332 of the annular body 312 and the partition 376. The
radially outer recess 336 includes a plurality of radially
extending, circumferentially spaced flanges 380. The flanges 380
divide the radially outer recess 336 into a plurality of radially
outer sub-recesses. In an exemplary embodiment, the flanges 380 of
the radially outer recess 336 are aligned with the flanges 338 of
the radially inner recess 324. However, other configurations are
envisioned.
[0077] The radially outer recess 336 has a first depth that
generally corresponds to the first depth of outer annular portion
340 shown in FIG. 12. The radially inner recess 324 has a second
depth that generally corresponds to the second depth of the inner
annular portion 342 shown in FIG. 12. In an exemplary embodiment,
the second depth of the inner recess 324 is greater than the first
depth of the outer recess 336.
[0078] The auxiliary wings 372 are disposed along the outer
circumference of the annular body 312. Each auxiliary wing 372
includes an auxiliary recess 374. Each auxiliary recess 374
includes at least one flange 382 disposed therein, extending in a
radial direction of the annular body 312, to divide the auxiliary
recess 374 into a plurality of sub-recesses. The auxiliary wings
372 and corresponding auxiliary recesses 374 are configured to
store additive material 122 to supplement the additive material 122
stored by the radially outer recess 336 and radial inner recess 328
of the annular body 312. In an exemplary embodiment, the auxiliary
wings 372 may make use of additional space in a filter assembly 140
to store more additive material 122.
[0079] With reference to FIG. 14, the flanges 382 of the auxiliary
recesses 374, radially outer recess and radially inner recess may
extend in an axial direction and terminate generally in a first
plane. The partition 376 and inner wall 378 may extend in an axial
direction beyond the first plane. In an exemplary embodiment, the
inner wall 378 may extend beyond the partition 376 in the axial
direction.
[0080] FIGS. 15 and 16 illustrate the basket 310 of FIGS. 12-14
having the additive material 122 stored therein, together with a
retainer 318. The retainer 318 includes a first end 360 and a
second end 362 positioned oppositely of the first end. Two sides
370 extend between the first end 360 and second end 362. In an
exemplary embodiment, the two sides may be parallel with one
another. Each end 360, 362 includes a depression 364 which may be
used for handling of the retainer 318. The retainer 318 extends to
a depth between the first end 360 and second end 362 to form a
partial cup or bowl shape 366. Further, the retainer 318 includes
an annular depression 384 formed in a central region of the
retainer 318 between the first end 360 and second end 362. The
annular depression 382 defines a retainer aperture 368 concentric
with the annular depression 384.
[0081] The basket 310 may be seated in the cup or bowl shaped
portion 366 and in the annular depression 384. In an exemplary
embodiment, the inner annular portion 342 of the basket 310 may be
positioned in the annular depression 384 of the retainer 318 and
the outer annular portion 340 of the basket 310 may be positioned
in the cup or bowl shaped portion 366 of the retainer 318. The
auxiliary wings 372 of the basket 310 may extend beyond the two
sides 370 of the retainer 318 between the first end 360 and second
end 362.
[0082] FIG. 17 illustrates the basket assembly together with the
filter assembly 140. In an exemplary embodiment, the filter
assembly 140 may the same as the filter assembly 140 described
above. Accordingly, in the description of this exemplary
embodiment, reference is made to the filter assembly 140 based on
the description above. However, it is understood that the basket
310 and retainer 318 may be used together with other suitable
filter assemblies.
[0083] With the basket 310 and retainer 318 assembled with the
filter assembly 140, the opening 314 of the basket 310, the
aperture 368 of the retainer 318, and the central opening 148 of
the filter assembly 140 are concentrically aligned. A portion of
the retainer 318 and/or basket 310 may be received within the
central opening 148 of the filter assembly 140. The legs 158 of the
relief valve 156 extend through the aperture 368 of the retainer
318 and into the opening 314 of the basket 310.
[0084] Further, with reference to FIGS. 15-17, an additive material
122 may be received in the recesses 324, 336, 374 of the basket
310. In an exemplary embodiment, in the auxiliary wings 372 and
radially outer recess 336, additive material 122 may be received up
to a height of the flanges 380, 382. However, in the radially inner
recess 324, additive material 1221 may be received up to a height
greater than the height of the flanges 380, 382 due to the height
of the partition 376 and inner wall 378.
[0085] FIGS. 18-20 illustrate a basket 410 constructed according to
a fourth exemplary embodiment of the present invention. With
reference to FIGS. 18-20, the basket 410 includes an annular body
412 having a retainer side 416 (FIG. 18) and an additive storage
side 420 (FIG. 19). The annular body 412 includes a concentric
opening 414 extending therethrough.
[0086] With reference to FIG. 18, the retainer side 416 of the
annular body 412 includes a radially outer annular portion 440
having a first depth and a radially inner annular portion 442
having a second depth. The second depth is greater than the first
depth. An inner wall 478 having an axial length surrounds the
opening 414. The radially inner annular portion 442 is proximate to
the opening 414. A pair of diametrically opposed auxiliary wings
472 is disposed on the outer circumference of the annular body
412.
[0087] With reference to FIG. 19, the additive storage side 420
includes a recess 424 having a varying depth. The varying depths
correspond to the first depth of the radially outer annular portion
440 and the second depth of the radially inner annular portion 442
of the annular body 412 as described above. The recess 424 is
defined generally between an outer wall 432 of the annular body 412
and the inner wall 478 surrounding the opening 414.
[0088] A plurality of flanges 438 is disposed in the recess 424 and
extends radially between the inner wall 478 and an inner surface of
the outer wall 432 of the annular body 412. The flanges 438 are
spaced circumferentially to form a plurality of sub-recesses within
the recess 424. A side of the respective flanges 438 facing the
annular body 412 presents a profile that generally corresponds to a
profile of the recess 424 defined by the varying depths. Another
side of the respective flanges 438 facing away from the annular
body 412 and recess 424 terminate generally at a first plane. That
is, the flanges 438, in one direction, extend to substantially the
same axial position.
[0089] With further reference to FIG. 19, auxiliary wings 472 are
disposed along an outer circumference of the annular body 412. In
an exemplary embodiment, the auxiliary wings 472 are disposed
diametrically opposite from each other. Each auxiliary wing 472
includes an auxiliary recess 474. Each auxiliary wing 472 further
includes at least one flange 482 extending through the recess 474
in a radial direction of the annular body 412. The at least one
flange 482 divides the auxiliary recess 474 into a plurality of
auxiliary sub-recesses. The at least one flange 482 in each
auxiliary wing 472 may be aligned with a corresponding flange 438
in the recess 424 of the annular body 412.
[0090] With reference to FIG. 20, the inner wall 478 may extend
axially beyond the first plane where the side of the respective
flanges 438 facing away from the annular body 412 terminates. In an
exemplary embodiment, as shown in FIGS. 21 and 22, for instance, an
additive material 122 may be stored in the sub-recesses of the
recess 424 and the auxiliary recess 474 and filled to level
corresponding to the height of the flanges 438, 482, i.e., to the
first plane.
[0091] FIG. 21 illustrates the basket 410 of FIGS. 18-20 having an
additive material 122 stored therein, together with a retainer 418.
The retainer 418 includes a first end 460 and a second end 462
positioned oppositely from each other. Each of the first end 460
and second end 462 include a depression 464 formed therein which
may be used in handling of the retainer 418. Two sides 470 extend
between the first end 460 and second end 462. In an exemplary
embodiment, the two sides may be parallel to each other. The two
sides 470 are arced to extend in a depth direction, such that the
retainer 418 extends to a depth between the first end 460 and
second end 462 to form a partial cup or bowl shape 466. Further,
the retainer 418 may include an annular depression (not shown)
similar to the annular depression 384 of the retainer shown in FIG.
16. The annular depression may be formed in a central region of the
retainer 418 between the curved ends 460, 462. The retainer also
includes a retainer aperture 468 concentric with the recess 424 and
annular depression.
[0092] The basket 410 may be seated in the cup or bowl shaped
portion 466 and/or in the annular depression. In an exemplary
embodiment, the inner annular portion 442 of the basket 410 may be
positioned in the annular depression of the retainer 418 and the
outer annular portion 440 of the basket 410 may be positioned in
the cup or bowl shaped portion 466 of the retainer 418. The
auxiliary wings 472 of the basket 410 may extend beyond a
respective side of the two sides 470 of the retainer 418 between
the first end 460 and second end 462.
[0093] FIG. 22 illustrates the basket 410 and retainer 418
assembled together with a filter assembly 140 according to an
exemplary embodiment of the present invention. With the basket 410
installed, the opening 414 of the annular body 412, aperture 468 of
the retainer 418, and the central opening 148 of the filter
assembly 140 are concentrically aligned. A portion of the retainer
418 may be received within the central opening 148 of the filter
assembly 140. The legs 158 of the relief valve 156 extend through
the aperture 468 of the retainer 418 and into the opening 414 of
the basket 410. A spring 170 may be positioned about the legs of
the relief valve 156 within the aperture 468 and opening of the
retainer 418 and the basket 410, respectively.
[0094] FIGS. 23-29 are directed to additional exemplary embodiments
of the basket for storing an additive material in a spin-on filter.
It is understood that these baskets may be used with the retainer
and filter structures described above.
[0095] FIGS. 23-24 illustrate a basket 510 constructed according to
a fifth exemplary embodiment of the present invention. With
reference to FIGS. 23 and 24, the basket 510 includes an additive
storage side 520 (FIG. 23) and a retainer side 516 (FIG. 24). The
basket 510 is formed as an annular body 512 and includes an opening
514 that is concentric with the annular body 512.
[0096] FIG. 23 shows the additive storage side 520 of the basket
510. The annular body 512 includes an annular plate 530 in which
the opening 514 is formed and a retaining wall 532 extending in an
axial direction about the circumference of the annular plate 530.
The retaining wall 532 and annular plate 530 form a recess 524
configured to receive and store an additive material (not shown). A
plurality of flanges 538 is formed within the recess 524 and
extends from the retaining wall 532 radially inward toward a center
of the basket 510. In an exemplary embodiment, the flanges 538
extend partially from the retaining wall 532 to the opening 514.
That is, in an exemplary embodiment, the flanges 538 do not extend
all the way from the retaining wall 532 to the opening 514.
[0097] In addition, individual flanges 538 of the plurality of
flanges may be configured differently. For example, some flanges
538 may be generally rectangular in shape. In an exemplary
embodiment, these flanges 538 may include a projection 540 from the
rectangular shape at a position proximate to the annular plate 530.
Other flanges 538 of the plurality of flanges may be shaped
generally as a triangle or a trapezoid. However, it is understood
that the shapes of the flanges 538 are not limited to these
examples.
[0098] FIG. 24 illustrates the retainer side 516 of the basket 510.
Here, the basket 510 is generally cylindrical in shape, formed by
the annular plate 530 and retaining wall 532. The opening 514
extends through a thickness of the annular plate. The basket 510 of
this exemplary embodiment may be used together with a retainer and
filter assembly described above.
[0099] FIGS. 25 and 26 illustrate a basket 610 constructed
according to a sixth exemplary embodiment of the present invention.
The basket 610 is in the form of an annular body 612. The annular
body 612 includes an inner annular plate 628 defining a concentric
opening 614 extending therethough. The annular body 612 further
includes an outer annular retaining portion 630 positioned along
the outer circumference of the inner annular plate 628.
[0100] The outer annular retaining portion 630 includes an inner
wall 632, outer wall 634 and connecting wall 636. The connecting
wall 636 is spaced in an axial direction from the inner annular
plate 628. The inner wall 632 extends in the axial direction along
a radially inner circumference of the connecting wall 636. The
inner wall 632 includes a plurality of projections 640 extending in
the axial direction to the inner annular plate 628, thereby
connecting the annular retaining portion 630 to the inner annular
plate 628. The projections 640 extend from a first axial position
to a second axial position. In an exemplary embodiment, the
projections 640 of the inner wall 632 may be equally spaced apart
in the circumferential direction. A space between respective
projections 640 of the inner wall forms a vent 642.
[0101] The outer wall 634 extends in the axial direction along a
radially outer circumference of the connecting wall 636. The outer
wall 634 includes a plurality of projections 644 extending in the
axial direction. The projections extend from the first axial
position to the second axial position. In an exemplary embodiment,
the projections of the outer wall are equally spaced apart in the
circumferential direction. In addition, each projection 644 of the
outer wall may be radially aligned with a respective projection 640
of the inner wall 632. Accordingly, a vent 646 formed between the
projections 644 of the outer wall 634 may correspond to respective
vents 642 formed between the projections 640 of the inner wall
632.
[0102] With reference to FIG. 26, a plurality of flanges 638 may
extend radially between the inner wall 632 and the outer wall 634.
In one exemplary embodiment, the flanges 638 extend between the
projections 644 of the outer wall 634 and the projections 640 of
the inner wall 632. In this embodiment, the flanges 638 are spaced
apart equally in the circumferential direction. Further, the
flanges 638 extend axially from the connecting wall 636 to the
second axial position between the projections 640, 644 of the inner
wall 632 and outer wall 634.
[0103] It is understood that the examples above are non-limiting.
For example, the projections 640, 644 of the inner wall 632 and
outer wall 634 may extend between different axial positions. That
is, the projections 644 of the outer wall 634 are not limited to
extending between the same axial extents as the projections 640 of
the inner wall 632. Likewise, the flanges 638 are not limited to
extend between the axial extents described above. Rather, the
projections 640, 644 and flanges 638 may be configured differently
depending on the particular application.
[0104] The inner wall 632, outer wall 634 and connecting wall 636
define a recess 624 configured to receive and store an additive
material (not shown). The basket 610 may be assembled together with
a retainer and filter assembly as described in the exemplary
embodiments above.
[0105] FIG. 27 illustrates a basket 710 constructed according to a
seventh exemplary embodiment of the present invention. The basket
710 is in the form of an annular body 712 having an opening 714
formed concentrically therein. The annular body 712 includes an
annular plate 728 having the opening 714 formed therein. The
annular body 712 further includes an inner wall 732 and an outer
wall 734.
[0106] The outer wall 734 extends around the outer circumference of
the annular plate 728 and extends in an axial direction. The outer
wall 734 includes a plurality of axial projections 744 spaced
circumferentially apart. In an exemplary embodiment, the
projections 744 are spaced apart equally. The projections 744
extend from a first axial position to a second axial position. A
space between respective projections 744 forms an outer vent
746.
[0107] The inner wall 732 extends circumferentially around the
annular plate 728 and projects in the axial direction. The inner
wall 732 is spaced radially inward from the outer wall 734. The
inner wall 732 includes a plurality of axially extending
projections 740 spaced apart in the circumferential direction. In
an exemplary embodiment, the projections 740 are spaced apart
equally. The projections extend from the first axial position to
the second axial position. In an exemplary embodiment, the
projections 740 of the inner wall 732 are radially aligned with the
projections 744 of the outer wall 734. An axially recessed area
between two projections forms an inner vent 742.
[0108] A plurality of flanges 738 extends radially between the
inner wall and outer wall. In an exemplary embodiment, the flanges
738 extend between respective projections of the inner wall and
outer wall. The flanges 738 extend axially from the annular plate
728 to the second axial position.
[0109] It is understood that the examples above are non-limiting.
For example, the projections 740, 744 of the inner wall 732 and
outer wall 734 may extend between different axial positions. That
is, the projections 744 of the outer wall 734 are not limited to
extending between the same axial extents as the projections 740 of
the inner wall 732. Likewise, the flanges 738 are not limited to
extend between the axial extents described above. Rather, the
projections 740, 744 and flanges 738 may be configured differently
depending on the particular application.
[0110] The inner wall 732, outer wall 734 and annular plate 728
define a recess 724 configured to receive and store an additive
material (not shown). The basket 710 may be assembled together with
a retainer and filter assembly as described in the exemplary
embodiments above.
[0111] FIGS. 28 and 29 illustrate a basket 810 constructed
according to an eighth exemplary embodiment of the present
invention. The basket 810 is in the form of an annular body 812.
The annular body 812 includes an inner annular plate 828 defining
an opening 814 extending therethrough.
[0112] The annular body 812 also includes an annular material
storage section 830 extending around an outer circumference of the
annular plate 828. The storage section 830 includes a first annular
plate 834 extending in a radial direction at a same axial position
as the inner annular plate 828. In an exemplary embodiment, the
first annular plate 834 is formed integrally with the inner annular
plate 828. However, the present invention is not limited to such a
configuration.
[0113] The annular material storage section 830 also includes an
axially extending annular retaining wall 832. The retaining wall
832 is positioned along an inner circumference of the first annular
plate 834 and extends from a first axial position at the first
annular plate to a second axial position. A second annular plate
836 extends radially outward from the retaining wall 832 at the
second axial position. In an exemplary embodiment, the first
annular plate 834 and second annular plate 836 extend to the same
radial position.
[0114] With reference to FIG. 29, a recess 824 is formed between
the first annular plate 834 and second annular plate 836 that is
configured to retain and store the additive material (not shown).
The recess 824 is bound at a radially inner side by the retaining
wall 832, and is open along a radially outer side.
[0115] A plurality of openings 840 is formed in the first annular
plate and second annular plate along a circumferential direction of
each plate. In an exemplary embodiment, the openings are equally
spaced apart in the circumferential direction. Further, the
openings 840 of the first annular plate 834 may be aligned with the
openings 840 of the other annular plate 836.
[0116] A plurality of flanges 838 is disposed within the recess
824. In an exemplary embodiment, each flange 838 extends radially
from the retaining wall 832 to a position corresponding with an
outer circumference of the first and second annular plates 834.
836. In addition, each flange 838 extends axially from the first
annular plate 834 to the second annular plate 836. In one example,
the flanges 838 are spaced circumferentially and positioned between
the openings 840 of the first 834 and second 836 annular plates in
the circumferential direction.
[0117] It is understood that the examples above are non-limiting.
For example, the axial and radial extents of the retaining wall
832, first annular plate 834, second annular plate 836, and flanges
838 may vary depending on a particular application. The basket 810
may be assembled together with a retainer and filter assembly as
described in the exemplary embodiments above.
[0118] The carrier assemblies including a basket and retainer
according to the exemplary embodiments described above may further
include a lid 1000. The lid 1000 may be used with a basket, for
example, as described in the embodiments above, to prevent or limit
leakage of additive material 122. In particular, the lid 1000 may
be used to prevent or limit leakage of additive material 122 during
a manufacturing process. For example, the additive material may be
heated and become liquefied during the manufacturing process. The
orientation of the basket may vary while being handled during the
manufacturing process and may be turned on its side or upside down.
The lid 1000, in accordance with the exemplary embodiments
described below may prevent or limit leakage of the additive
material 122 during handling while still allowing for fluid
communication with the additive material 122 during operation with
a filter assembly 140.
[0119] FIGS. 30 and 31 illustrate a basket 1010 together with a lid
1000 according an exemplary embodiment of the present invention.
The lid 1000 is annular shaped and includes a concentric opening
1012 extending therethrough. The lid 1000 may be installed on the
basket 1010 such that the opening 1012 of the lid is concentric
with an opening 1014 of the basket 1010. The diametric size of lid
1000 generally corresponds to the size of the basket 1010, and may
vary based on application and suitability. In the exemplary
embodiment shown in FIGS. 30 and 31, an outer diameter of the lid
1000 is substantially the same as an outer diameter of the basket
1010. In addition, the opening 1012 of the lid 1000 may be larger
in diameter than the opening 1014 of the basket 1010. In one
example, fastening tabs 1016 of the basket 1010 may be received
through the opening 1012 of the lid 1000.
[0120] The lid 1000 includes alternating raised portions 1018 and
lowered portions 1020 along a circumferential direction on a first
surface 1022. The raised portions 1018 extend radially from the lid
opening 1012 toward an outer periphery 1024 of the lid 1000. The
lowered portions 1020 extend radially from the lid opening 1012 and
terminate at a port housing 1026. Each port housing 1026 includes a
first port 1028 which opens toward the lowered portion 1020. The
port housings 1026 extend to a height above the raised portions
1022. The port housings 1026 further include a second port 1030,
positioned on a second surface 1032 of the lid 1000.
[0121] The lid 1000 may be installed on basket 1010 storing an
additive material 122. In this configuration, the additive material
122 is positioned proximate to the second surface 1032 of lid 1000.
During manufacturing, the lid 1000 is configured to prevent or
prevent leakage of the additive material 122 from the basket 1010.
For example, where the additive material 122 has been liquefied,
the material 122 would normally flow over the sides of the basket
1010 if the basket 1010 were tilted beyond a certain extent. With
the lid 1000 in place, the additive material 122 may be at least
partially retained in basket 1010 when the basket is tilted beyond
the certain extent.
[0122] In the exemplary embodiment described above and shown in
FIGS. 30-33, if the basket 1010 and lid 1000 are tilted in one
direction, the additive material 122 may flow through the second
port 1030 such that the port housing 1026 becomes filled with the
additive material 122. If the basket is then be tilted in another,
generally opposite, direction, beyond a certain extent, the
additive material 122 may flow out of the first port 1028 and into
a lowered portion 1020 toward a center of the lid 1000. Due to the
multiple-turn process described above for the additive material 122
to escape through the first port 1028, the amount of additive
material 122 escaping the basket 1010 may be limited.
[0123] FIGS. 32 and 33 illustrate the lid 1000 described above with
reference to FIGS. 30 and 31 assembled together with a retainer
1034 and filter assembly 140 (FIG. 33). The basket 1010 and
retainer 1034 may be in the form of any of the baskets and
retainers described in the exemplary embodiments above. The basket
1010 and retainer 1034 may be assembled together with the filter
assembly 140 described above as well. While the lid 1000 may limit
or prevent escape of additive material 122 during manufacturing as
described above, the lid 1000 still allows for the additive
material 122 to be delivered to oil or other fluid to be
filtered.
[0124] FIGS. 34-35 illustrate a lid 1100 assembled with a basket
1110 according to another exemplary embodiment of the present
invention. The lid 1100 is annular shaped and includes a concentric
opening 1112 extending therethrough. The lid 1100 may be installed
on the basket 1110 such that the opening 1112 of the lid 1100 is
concentric with an opening 1114 of the basket 1110. The diametric
size of the lid 1100 generally corresponds to the size of the
basket 1110, and may vary based on application and suitability. In
the exemplary embodiment shown in FIGS. 34-35, an outer diameter of
the lid 1100 is substantially the same as an outer diameter of the
basket 1110. In addition, the opening 1112 of the lid 1100 may be
larger in diameter than the opening 1114 of the basket 1110. In one
example, fastening tabs 1116 of the basket 1110 may be received
through the opening 1112 of the lid 1100.
[0125] In the exemplary embodiment shown in FIGS. 34 and 35, an
outer diameter of the lid 1100 is substantially the same as an
outer diameter of the basket 1110. In addition, the opening 1112 of
the lid 1100 may be larger in diameter than the opening 1114 of the
basket such that fastening tabs 1116 of the basket 1110 may be
received through the opening 1112 of the lid 1100.
[0126] The lid 1100 is shaped substantially as an annular plate.
The lid 1100 includes a first surface 1122 facing away from the
basket 1112 and a second surface 1132 facing the basket 1110 and
the additive material 122 stored in the basket 1110. The first
surface 1122 includes at least one raised portion 1118 which me be
used, for example, as a spacer. The lid 1100 includes a plurality
of apertures 1136 disposed on the first surface 1122. The apertures
1136 allow for the stored additive material (not shown) to be
delivered to the oil or other fluid to be filtered.
[0127] Similar to the exemplary embodiment described above in FIGS.
30-33, the lid 1100 of FIGS. 34-35 may limit the escape of additive
material from the basket 1110 during a manufacturing process where
the basket is tilted beyond a certain extent.
[0128] FIGS. 36 and 37 illustrate the lid 1100 described above with
reference to FIGS. 34 and 35 assembled together with a retainer
1134 and filter assembly 140 (FIG. 37). The basket 1110 and
retainer 1134 may be in the form of any of the baskets and
retainers described in the exemplary embodiments above. The basket
1110 and retainer 1134 may be assembled together with the filter
assembly 140 described above as well. While the lid 1100 may limit
or prevent escape of additive material (not shown) during
manufacturing as described above, the lid 1100 still allows for the
additive material to be delivered to oil or other fluid to be
filtered.
[0129] While the invention has been described with reference to
exemplary embodiments, it will be understood by those skilled in
the art that various changes may be made and equivalents may be
substituted for elements thereof without departing from the scope
of the invention. In addition, many modifications may be made to
adapt a particular situation or material to the teachings of the
invention without departing from the essential scope thereof.
Therefore, it is intended that the invention not be limited to the
particular embodiments disclosed as the best mode for carrying out
this invention, but that the invention will include all embodiments
falling within the scope of the present application.
* * * * *