U.S. patent number 3,676,986 [Application Number 04/858,079] was granted by the patent office on 1972-07-18 for built-in central vacuuming device.
This patent grant is currently assigned to Charles Woods. Invention is credited to Joseph W. Reiling.
United States Patent |
3,676,986 |
Reiling |
July 18, 1972 |
BUILT-IN CENTRAL VACUUMING DEVICE
Abstract
An improved vacuum cleaner device utilizing a housing with
portions which are rapidly assembled by interlocking together under
compression, to simultaneously seat and mount the motor and
impellers as well as the stators within the assembled housings. The
device utilizes a flexible motor-mounting element and compressible
O-rings, one of which is positioned between the two telescoping
housings to provide an air seal as well as axial resilience helping
to retain the parts in their assembled state. A similarly
interlocking cylindrical extension is provided for use in enlarging
the housing to accommodate a larger motor. A wall-mounted
receptacle for access to the vacuum from the interior of the
habitation has a front cover plate attached to the receptacle by a
living hinge, and the entire receptacle can be molded in one piece,
so as to bias the cover plate in its fully opened position by the
molding orientation of the living hinge.
Inventors: |
Reiling; Joseph W. (Battle
Creek, MI) |
Assignee: |
Woods; Charles (Delton,
MI)
|
Family
ID: |
25327425 |
Appl.
No.: |
04/858,079 |
Filed: |
September 15, 1969 |
Current U.S.
Class: |
55/472; 55/361;
D32/31; 15/327.2; 55/DIG.3; 285/361; 15/314; 55/DIG.2; 55/DIG.8;
285/7 |
Current CPC
Class: |
A47L
5/38 (20130101); Y10S 55/08 (20130101); Y10S
55/02 (20130101); Y10S 55/03 (20130101) |
Current International
Class: |
A47L
5/22 (20060101); A47L 5/38 (20060101); B01d
046/02 () |
Field of
Search: |
;285/7,360,361,376,401,40 ;55/467,470-473 ;15/327 ;292/87 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Nozick; Bernard
Claims
I therefore particularly point out and distinctly claim as my
invention:
1. A vacuuming device for use in a habitation, comprising:
A. a first substantially tubular housing having an open end, means
for radially supporting a motor, and means at one end of said first
tubular housing and said motor supporting means axially restraining
a motor in one direction;
B. vacuum creating means mounted within said first housing
comprising:
1. said motor having a rotatable shaft and being slidably disposed
within said motor supporting means and having one end in engagement
with said axial, motor restraining means,
2. an air impeller assembly comprising:
a. an impeller tubular housing slidably received within and in
contact with said first tubular housing and including means for
engaging the other end of said motor supporting means,
b. a stator mounted within said impeller housing,
c. at least one impeller rotatably mounted within said impeller
housing and operatively coupled to said motor shaft; and
C. a second substantially tubular housing having an arrestment
means mounted therein for collecting dirt or refuse objects drawn
from the interior of said habitation and passing the air to the air
impeller assembly,
said second housing having an open end slidably received within
said first tubular housing,
means for detachably connecting the open end of said second housing
to the open end of said first housing,
the open end of said second housing abuttingly engages said
impeller housing and provides axial restraint for said vacuum
creating means in the other axial direction,
said vacuum creating means being free of attachment to said first
and second housings and further being slidably removable from said
first housing upon disengagement of said detachable means, and
D. detachable means provided at the other end of said second
housing adapted to engage an air conduit for transporting dirt from
the habitation to the arrestment means,
E. outlet means in said first tubular housing for allowing passage
of air from the air impeller assembly outwardly from the vacuuming
device.
2. The improved vacuuming device as defined in claim 1, wherein
there is additionally provided flexible means which includes means
for mounting said stator with respect to said motor.
3. The improved vacuuming device as defined in claim 2 wherein said
stator mounting means includes a flexible separator element having
portions engaging said stator and also having motor-engaging
portions.
4. The improved vacuuming device as defined in claim 1, and further
including as an improvement thereof, a receptacle attached to said
conduit means, said receptacle having a front surface and a cover
plate hingedly attached to said front plate by a living hinge.
5. The improved vacuuming device as defined in claim 4, wherein
said cover plate is biased in a predetermined position with respect
to said front surface by the orientation and resilience of said
living hinge.
6. The improved vacuuming device as defined in claim 1, wherein
there is additionally provided holding means which includes means
mounted between said first and said second housing portions for
spacing the same and for increasing the volume enclosed by the same
in the direction if their axes.
7. The improved vacuuming device as defined in claim 6 wherein
said spacing means is a cylinder mounted between said first and
second housings by detachable fastener means which complement and
attach to respective portions of the first and second housings.
8. The improved vacuuming device as defined in claim 6 and further
including compressible means mounted adjacent that end of said
spacing means which is associated with said first housing for
sealing said spacing means with respect to said first housing.
9. The improved vacuuming device as defined in claim 1, wherein
there is additionally provided mutually slideable interconnection
means which includes bayonet-type connector elements between said
first and said second housing portions.
10. A vacuuming device according to claim 1, wherein said impeller
housing (a) comprises a first annular member having an annular
flange extending in one direction mounted over and engaging one end
of said motor, a second annular member having a radial wall and an
annular flange at the periphery thereof engaging said first annular
member, enclosing said air-impeller (c), and having said stator
mounted on said radial wall, with an air channel centrally located
in said radial wall; a second impeller operationally connected to
said motor shaft; and a third annular member having an axial flange
mounted over and engaging said second radial member and enclosing
said second impeller and said stator; wherein the lip of said
second tubular housing engages said third axial member, thereby
providing axial restraint for said motor and air impeller
assembly.
11. The improved vacuuming device as defined in claim 1 wherein
said biasing means includes an O-ring positioned for compressive
axial loading between said housing portions.
12. The improved vacuuming device as defined in claim 11
including
means defining an annular passage within one of said housing
portions;
said O-ring disposed within said passage; and
an annular skirt on the other of said housing portions;
said skirt being of such dimension as to fit within said passage to
confine said O-ring therein.
13. In a vacuum cleaner device, of the type having a cannister-type
housing which encloses a motor coupled to an air impeller means, an
arrestment means located upstream from the air impeller means for
removing debris from air and having a conduit means connected
thereto for guiding debris to the arrestment means by the air
movement created by the intercoupled motor-impeller means, the
improvement comprising:
a. at least two connectable tubular housing portions comprising
said housing,
b. means for seating and restraining said inter-coupled
motor-impeller means within one of said housing portions,
c. said seating means including means extending between the
intercoupled motor-impeller means and the other of said housing
portions,
d. biasing means disposed between said two housing portions for
biasing such portions apart,
e. means for interlocking said housing portions one to the other to
detachably secure the housing portions together against the action
of the biasing means while simultaneously mounting said motor and
air-impeller means therewithin,
f. said interlocking means comprises interengageable structures
held in mutual engagement at least in part by said biasing means
acting on said housing portions,
g. said interengageable structures comprise projections and
recesses forming detents,
h. the other of said housing portions being provided at its end
with means engaging and providing sole axial restraint for said
motor and air-impeller means whereby upon removal of said other
housing portion, said motor and air-impeller means may be slidably
removed.
14. The improvement of claim 13, wherein said biasing means
includes a flexible sealing member disposed between said housing
portions.
15. The improvement of claim 13, wherein said air-impeller means
includes at least one rotor element mounted on the drive shaft of
said motor, and wherein said seating means extending between said
other housing portion and said intercoupled motor-impeller means
includes means defining a stator element disposed adjacent said
rotor element and braced against said motor.
16. The improvement of claim 15, wherein said seating means
includes at least a portion which is at least slightly
flexible.
17. The improvement of claim 16, wherein said flexible portion
comprises part of said means forming said stator element.
Description
BACKGROUND OF THE INVENTION
In the present era, it is rapidly becoming recognized that more and
more people have increased amounts of leisure time and money for
travel and for luxuries such as modern automobiles, boats, travel
trailers, and the like. Considerable time is spent in the use of
these products, which are utilized to a certain extent as
habitations, in much the same way as a house; consequently the need
for an efficient cleaning system for the same has arisen. Although
permanently mounted or built-in vacuum cleaning devices have been
made available heretofore, these devices have previously been
designed and assembled in conformity with conventional practices,
using numerous mechanical fasteners, conventional motor-mounting
techniques, ordinary hinges, and the like, and requiring a
considerable labor expenditure to assemble and produce. For these
and other similar reasons, such devices have therefore been overly
expensive to make and sell. Consequently, they have heretofore been
regarded as more of an expensive novelty than a truly practical and
economically advantageous tool, which their broad underlying nature
and purpose had intended them to be. Furthermore, previous devices
of this nature have been stereotyped in design and have not had any
appreciable assembly or use flexibility. For example there has
previously been no ready way to build a family of such devices
having different motor or collection bag capacities by means of a
simple assembly modification which can if desired be made in the
field after initial construction, at the request of the ultimate
consumer.
SUMMARY OF THE INVENTION
This invention relates to an improved vacuuming device, intended
primarily for permanent mounting in a central location in an
automobile, travel trailer, boat, or like habitation, as that term
is used herein. Briefly stated, this invention provides an improved
form of such a device in which there is a means for creating the
vacuum which includes a first housing, and a means for collecting
objects drawn by vacuum from the interior of the habitation into
the device, which includes a second housing, the improvement
comprising means for assembling the vacuum-creating means and the
object-collecting means together while at the same time mounting
internal components thereof, all by assembling the first and the
second housings together with respect to each other by a
quick-connect sliding interlock accomplished when the housings are
under mutual compression and serving to hold the housings under
such compression. In the improvement of the invention the
vacuum-creating means is also improved, by virtue of such internal
components and their relative assembly and mounting, and an
improved access receptacle is also provided which comprises an
integrally molded structure having a cover plate hingedly attached
by a "living" hinge and a novel mounting structure which is readily
convertible to accommodate both suspended and flush mounting
placements.
Accordingly, it is an object of the invention to provide an
improved vacuuming device having a novel housing assembly which is
rapidly and easily accomplished without mechanical fasteners and
which is positively locked against accidental disassembly.
It is a further object of the invention to provide a device of the
above character wherein the operative components of the
vacuum-creating means are mounted in a novel manner during the
assembly of the housing.
It is a related object of the invention to provide a device of the
above character having a novel form of access receptacle with a
cover which is inexpensively hinged thereto with a preferred
orientation providing a self-biasing feature.
Still another object of the invention is to provide a device of the
above character wherein the housing can be easily and rapidly
modified to accommodate a larger motor or collecting bag.
Other objects and advantages will become apparent upon reference to
the following drawings and detailed discussion.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a vacuuming device constructed in
accordance with the invention;
FIG. 2 is a fragmentary exploded view in perspective of the device
illustrated in FIG. 1;
FIG. 3 is a fragmentary sectional side elevational view taken along
the plane III--III of FIG. 1;
FIG. 4 is a perspective view of an extension adaptor which can be
utilized with the invention;
FIG. 5 is an exploded perspective view of the receptacle for the
device shown in FIG. 1;
FIG. 6 is a fragmentary sectional view taken along the plane VI--VI
of FIG. 5, the switch having been omitted; and
FIG. 7 is a sectional view taken along the plane VII--VII of FIG.
5.
DESCRIPTION OF THE PREFERRED EMBODIMENT
The invention relates to a vacuuming device of the type that can be
mounted in a generally permanent manner out of sight in a utility
or like room or area of a habitation, with tubes or the like
communicating to access receptacles mounted in wall openings or
attached to an overhanging wall or shelf in the habitation. For
example, such a device could be mounted behind a wall or in a
compartment of a travel trailer, boat, automobile or airplane, with
the access receptacles mounted in a wall, dashboard, fire wall,
door, or the like.
The vacuum device basically comprises a motor 10 (FIGS. 2 and 3)
enclosed in a first housing 12, with an impelling means 14 mounted
on the drive shaft 16 of the motor, for generating the vacuum, as
well as a collecting bag 18 confined in a second housing 20
upstream from the impelling means 14. A desired number of access
receptacles 110 are provided, coupled to desired locations within
the interior of the habitation by hoses or tubes 24 connecting the
second housing or container 20 to the receptacle 110, and mounting
straps 26 or like elements are provided for mounting the device
within or behind the wall of the habitation. A tube cap 27 connects
the hose 24 to the housing 20, and the cap utilizes a bayonet-type
connection for this purpose, comprising a number of mutually spaced
J-shaped slots 28 cooperating with lugs 29 formed on or attached to
the housing 20. A flange-like extremity 19 at the outer edge of the
collecting bag 18 fits over the end 21 of the collector housing 20,
so that the bag is anchored in place by seating the cap 27 upon the
end of the housing. In this connection, the flange extremity 19 may
be resiliently compressible, so as to spring load the bayonet
fitting just described.
The impelling means 14 has a second stage impeller 30 mounted on
the drive shaft 16 of the motor 10 and indexed against a shoulder
32 on the shaft, as well as a separator stator 34 mounted over the
motor shaft in a novel manner hereinafter described and disposed on
the side of the impeller 30 opposite to the shoulder 32, a first
stage impeller 36 also mounted on the drive shaft 16 and
interlocked with the second stage impeller 30 by means of notched
interlocking hubs 38, and an inlet cover 40, the novel mounting of
which is also described hereinafter. Both the impellers and the
stator have a plurality of equally-spaced inwardly-curved vanes,
the outer edges of which are secured to disk-like plates 42 and 44,
respectively. The two impellers are held on the motor drive shaft
16 by a nut 46, with the interlocking hubs 38 positioning the vanes
in the desired manner on either side of the stator 34.
In accordance with the invention, the housings 12 and 20 are
interconnected to each other so as to place them under axial
loading forces and thereby positively lock them together, while at
the same time mounting the motor, impellers and collecting bag. To
accomplish this, the rearward end 50 of the housing 12 (FIG. 3) has
three spaced flanges 52 which support the rearward end or base 54
of the motor radially, and each of these is preferably formed with
an arcuate groove 56 which together seat an O-ring 58 formed from
an elastomeric material. As illustrated, the flanges 52 preferably
are inclined radially inwardly inside the housing 12, so as to
guide the motor into place when it is inserted from the open end of
the housing. The forward end 60 of the motor is supported within
the housing 12 by means of a separator element 62 which is at least
slightly flexible. Separator 62 has a convergent end portion 64
which defines an annular internal shoulder 66 which fits over the
end of the cylindrical motor to mount the same in centered
relationship within the housing 12.
The forward end of the separator opposite the convergent portion 64
is formed with a forwardly-projecting annular lip 68 which is
spaced inwardly from the inside wall of the housing 12. It is this
lip and the adjacent housing wall which support the aforementioned
stator 34 and the fan cover 40, the latter having a tubular rear
portion 41 which fits snugly between the inside wall of the housing
12 and the outer peripheral surface of the stator. As illustrated,
the relationship is thus one of interfitted co-axially telescoped
tubular portions of progressively increasing diameter formed by the
separator 62, the stator 34, the fan cover 40, and the housing 12.
Furthermore, the separator, stator and fan cover each have stepped
end extremities which form interfitting shoulders, so that the fan
cover bears rearwardly on both the stator and the separator, the
stator bears rearwardly on the separator at two radially spaced
areas, and the separator bears rearwardly on the motor, to force
the latter rearwardly against the flanges 52 and the O-ring 56
carried thereby (if used). The outer periphery of the separator,
stator and fan cover are all of substantially the same diameter,
however, to fit snugly within the casing 12.
To seal the two housings 12 and 20 together while forced toward one
another compressively and while under axial loading, the fan cover
40 has a stepped circumferential portion 80 of its
rearwardly-extending skirt 78 which has a slightly smaller diameter
than the latter, whose outer diameter is substantially the same as
the inside diameter of the housing 12. This step in the skirt 78
forms a recessed annular shoulder, on which an elastically
compressible O-ring 82 is seated, within the space between the fan
cover portions 78 and 80 and the inside wall of the housing 12. The
end extremity 84 of the collector bag housing 20 follows the O-ring
into this recess or pocket and axially abuts the O-ring therein in
direct longitudinal registration. To lock the housing 20 and the
housing 12 in this position, the walls of the two housings are
formed with a bayonet type of connection comprising a plurality of
spaced J-shaped slots 90 in the wall of housing 12 (FIGS. 1 and 3)
and a corresponding number of similarly spaced lugs 92 on the outer
periphery of the end portion 84 of housing 20.
Thus, upon telescoping insertion of the housing 20 within the
housing 12 with the lugs 92 sliding in the slots 90, the O-ring 58
at the base of the motor 10 and the aforementioned O-ring 82 will
be elastically compressed and the separator 62 will flex, so that
when the bayonet connection is completed, the O-rings and the
separator will exert a reaction force in the opposite direction due
to their elasticity. It is this force which securely locks the two
housings together with resilient axial loading and prevents their
accidental unlocking. Furthermore, it simultaneously anchors the
motor 10 and its attached impellers in place, as it does the stator
34 and the fan cover 40, all without the need for mechanical
fastener means. Additionally, the location of the O-ring 82 insures
that a proper air seal is obtained between the two housings and the
fan cover. In this connection, it is to be noted that if the
separator 62 is made of a material such as polypropylene having a
moderately high degree of resilient flexure, it may not be strictly
necessary to use the O-ring 58 at the base of the motor, since the
added compressibility which it affords may not be required. This is
particularly true if the motor and impeller housing 12 is also made
of such material, since in this case the motor-retaining flanges 52
will also provide a degree of resilient flexure. Of course, if
relatively rigid material is used for these parts, O-ring 58 may be
quite desirable.
It will be readily apparent that actuation of the motor 10 causes
the two impellers 30 and 36 to rotate, drawing air in through the
receptacle 22, the hose 24, and into the collecting bag 18. Because
such bags are pervious to air, the air continues out through the
bag, past the motor and through the opening formed by the three
flanges 52, leaving dirt, dust or refuse material inside the
bag.
In accordance with another aspect of the invention, to extend the
usable volume contained in the housings 12 and 20, an extension
cylinder or adapter 100 (FIG. 4) is provided. The cylinder 100 has
a stepped portion 102 having the same diameter and wall thickness
as the housing 12 and having the same type of J-shaped slots 104 to
cooperate with the lugs 92 on the housing 20. The other end 106 of
the cylinder has lugs 108 and is of the same diameter as the end 84
of the housing 20, so as to engage the bayonet mounting slots 90 of
the housing 12. By use of the cylinder 100, either a larger motor
10 or a longer bag 18 can be utilized with complete
interchangeability of other components. It will be readily apparent
that when the cylinder 100 is used, the O-ring 82 is positioned at
the end 106 of the cylinder 100, within the wall of the housing
12.
In accordance with still another aspect of the invention the
receptacle 110 is improved as follows: the cover plate 114 and
other portions of the box-like receptacle are integrally molded,
with the cover plate 114 being attached by means of a living hinge
116 (FIGS. 6 and 7). In this connection, the words "living hinge"
mean a flexible connection between two relatively inflexible
objects, normally integral therewith, so that the flexible
connection does substantially all of the bending and the customary
pintle structure is eliminated. Accordingly, in this case the two
inflexible objects are the front face or surface 112 and the cover
plate 114. Such a hinge has the advantage of simple and economical
manufacturing, inasmuch as the entire receptacle is cast or molded
from a synthetic "plastic" material with the cover plate formed
integral with the rest of the receptacle. The casting or molding
can be done with the parts occupying the position shown in FIG. 7,
in which case the cover plate 114 will always tend to reoccupy this
position due to its "memory" or inherent bias. Thus, when the cover
is opened it will automatically hinge upwardly to the maximum open
position, thus freeing the user's hands for depositing objects into
the opening 118 of the receptacle or for the attachment of a
conventional vacuum hose or extension instrument.
To latch the cover plate 114 in closed position, a latch 120 is
molded at the outer edge of the cover plate. The latch cooperately
engages an abutment shoulder formed by the terminus of a groove 122
formed in the opening 118. To seal the opening 118 when the cover
is closed, an annular lip 130 is molded or cast upon the inside
surface 132 of the cover plate, the diameter of the lip being of
such size as to mate with the opening 118 to thereby close it.
To mount the receptacle in a wall opening, it is provided with a
shoulder flange 140, the outer dimensions of which at least
slightly exceed the dimensions of the wall opening into which the
receptacle is to be inserted. Screw holes 142 allow conventional
screws to complete the mounting. In the event the receptacle is to
be mounted on the bottom edge of an overhanging wall or shelf, a
spacer plate 144 is provided which fits onto the top surface 146 of
the receptacle, to in effect fill the shoulder recess behind the
frame-like flange 140. In this case, the screw connections are made
through both the top surface 146 and the spacer plate 144. By use
of the spacer plate, the receptacle gives the appearance of being
an integral extension of the wall or shelf to which it is
mounted.
A conventional push-button actuator switch 150 is positioned in an
opening 152 in the front face of the receptacle, the button of the
switch being spring-loaded outwardly to be released when the cover
plate 114 is opened, thereby completing an energizing circuit to
automatically start the motor 10 so as to create the vacuum.
It will thus be appreciated that the present invention provides
very desirable features not heretofore available in such a device,
which allow for extremely effective and efficient manufacture and
assembly. All of the component parts of the system such as the
housings, impellers, stator, fan cover and the like can readily be
molded from synthetic plastics or the like, and the assembly is
very rapid and easy, as well as being practically fool-proof.
Consequently, it is entirely conceivable that those skilled in the
art may well devise certain variations and modifications of the
preferred embodiments disclosed and described hereinabove.
Consequently, the specific structures which are illustrated and
described should be regarded as being for purposes of illustration,
and not as determinative of the only practical or desirable way of
implementing the concept on which the invention is based.
* * * * *