U.S. patent application number 16/870416 was filed with the patent office on 2021-11-11 for fastener retaining component.
This patent application is currently assigned to Caterpillar Inc.. The applicant listed for this patent is Caterpillar Inc.. Invention is credited to Nathan BJERKE, Thomas Marshall CONGDON.
Application Number | 20210348640 16/870416 |
Document ID | / |
Family ID | 1000004840767 |
Filed Date | 2021-11-11 |
United States Patent
Application |
20210348640 |
Kind Code |
A1 |
BJERKE; Nathan ; et
al. |
November 11, 2021 |
FASTENER RETAINING COMPONENT
Abstract
A fastener retaining component may comprise a first elongated
member. A length of the first elongated member may be greater than
a diameter of a fastener receiving element of a component. The
fastener retaining component may further comprise a second
elongated member. A length of the second elongated member may be
greater than the diameter of the fastener receiving element. The
fastener retaining component may be configured to be press-fit
within the fastener receiving element such that press-fitting the
fastener retaining component, within the fastener receiving
element, increases a tension in the fastener retaining component to
cause the first elongated member and the second elongated member to
engage with an inner surface of the fastener receiving element and
to retain a fastener within the fastener receiving element.
Inventors: |
BJERKE; Nathan; (Peoria,
IL) ; CONGDON; Thomas Marshall; (Dunlap, IL) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Caterpillar Inc. |
Peoria |
IL |
US |
|
|
Assignee: |
Caterpillar Inc.
Peoria
IL
|
Family ID: |
1000004840767 |
Appl. No.: |
16/870416 |
Filed: |
May 8, 2020 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F16B 39/02 20130101 |
International
Class: |
F16B 39/02 20060101
F16B039/02 |
Claims
1. A fastener retaining component to retain a fastener within a
fastener receiving element of a component, the fastener retaining
component comprising: a first elongated member comprising: a first
set of component engaging elements extending from a first end of
the first elongated member to engage with an inner surface of the
fastener receiving element, a second set of component engaging
elements extending from a second end of the first elongated member
to engage with the inner surface of the fastener receiving element,
and a first middle portion to engage with a top surface of a head
of the fastener; and a second elongated member comprising: a third
set of component engaging elements extending from a first end of
the second elongated member to engage with the inner surface of the
fastener receiving element, a fourth set of component engaging
elements extending from a second end of the second elongated member
to engage with the inner surface of the fastener receiving element,
and a second middle portion to engage with the top surface of the
head of the fastener.
2. The fastener retaining component of claim 1, wherein the first
middle portion and the second middle portion are a same middle
portion shared by the first elongated member and the second
elongated member.
3. The fastener retaining component of claim 1, wherein the first
elongated member and the second elongated member are formed from a
same sheet of material.
4. The fastener retaining component of claim 1, wherein a length of
the first elongated member is greater than a diameter of the
fastener receiving element, wherein a length of the second
elongated member is greater than the diameter of the fastener
receiving element, wherein the first end of the first elongated
member is opposite the second end of the first elongated member,
and wherein the first end of the second elongated member is
opposite the second end of the second elongated member.
5. (canceled)
6. The fastener retaining component of claim 1, wherein the first
middle portion of the first elongated member and the second middle
portion of the second elongated member are aligned with a center of
the fastener receiving element when the fastener retaining
component is inserted in the fastener receiving element.
7. The fastener retaining component of claim 1, wherein the
fastener retaining component is configured to be press-fit within
the fastener receiving element such that press-fitting the fastener
retaining component, within the fastener receiving element,
increases a tension in the fastener retaining component to cause
the first elongated member and the second elongated member to
engage with the inner surface of the fastener receiving element and
to retain the fastener within the fastener receiving element.
8. A system for coupling a component to a receiving structure, the
system comprising: a fastener; and a fastener retaining component
to retain the fastener within a fastener receiving element of the
component, the fastener retaining component comprising: a first
elongated member, a length of the first elongated member being
greater than a diameter of the fastener receiving element, and a
second elongated member, a length of the second elongated member
being greater than the diameter of the fastener receiving element,
the fastener retaining component being configured to be press-fit
within the fastener receiving element such that press-fitting the
fastener retaining component, within the fastener receiving
element, increases a tension in the fastener retaining component to
cause the first elongated member and the second elongated member to
engage with an inner surface of the fastener receiving element and
to retain the fastener within the fastener receiving element, a
middle portion, of the first elongated member, being configured to
engage with a top surface of a head of the fastener, and a middle
portion, of the second elongated member, being configured to engage
with the top surface of the head of the fastener.
9. (canceled)
10. The system of claim 8, wherein the fastener includes a plow
fastener.
11. The system of claim 8, wherein the fastener retaining component
comprises spring steel.
12. The system of claim 8, wherein a longitudinal axis, of the
first elongated member, intersects a central point of the fastener
receiving element such that the first elongated member is centered
with respect to the fastener receiving element.
13. The system of claim 8, wherein the first elongated member
comprises: a first set of component engaging elements extending
from a first end of the first elongated member to engage with the
inner surface of the fastener receiving element, and a second set
of component engaging elements extending from a second end of the
first elongated member to engage with the inner surface of the
fastener receiving element, wherein the second elongated member
comprises: a third set of component engaging elements extending
from a first end of the second elongated member to engage with the
inner surface of the fastener receiving element, and a fourth set
of component engaging elements extending from a second end of the
second elongated member to engage with the inner surface of the
fastener receiving element, and wherein the first elongated member
and the second elongated member are separate elements.
14. The system of claim 8, wherein the first elongated member and
the second elongated member are formed from a same sheet of
material.
15. A fastener retaining component comprising: a first elongated
member, a length of the first elongated member being greater than a
diameter of a fastener receiving element of a component, and a
second elongated member, a length of the second elongated member
being greater than the diameter of the fastener receiving element,
the fastener retaining component being configured to be press-fit
within the fastener receiving element such that press-fitting the
fastener retaining component, within the fastener receiving
element, increases a tension in the fastener retaining component to
cause the first elongated member and the second elongated member to
engage with an inner surface of the fastener receiving element and
to retain a fastener within the fastener receiving element, a
middle portion, of the first elongated member, being configured to
engage with a top surface of a head of the fastener, and a middle
portion, of the second elongated member, being configured to engage
with the top surface of the head of the fastener.
16. The fastener retaining component of claim 15, wherein the first
middle portion and the second middle portion are a same middle
portion shared by the first elongated member and the second
elongated member.
17. The fastener retaining component of claim 15, wherein the first
elongated member and the second elongated member are formed from a
same sheet of material.
18. The fastener retaining component of claim 15, wherein the first
elongated member comprises: a first set of component engaging
elements extending from a first end of the first elongated member
to engage with the inner surface of the fastener receiving element,
a second set of component engaging elements extending from a second
end of the first elongated member to engage with the inner surface
of the fastener receiving element, the first end of the first
elongated member being opposite the second end of the first
elongated member, and wherein the second elongated member
comprises: a third set of component engaging elements extending
from a first end of the second elongated member to engage with the
inner surface of the fastener receiving element, and a fourth set
of component engaging elements extending from a second end of the
second elongated member to engage with the inner surface of the
fastener receiving element, the first end of the second elongated
member being opposite the second end of the second elongated
member.
19. The fastener retaining component of claim 18, further
comprising: a third elongated member comprising: a fifth set of
component engaging elements extending from a first end of the third
elongated member to engage with the inner surface of the fastener
receiving element, a sixth set of component engaging elements
extending from a second end of the third elongated member to engage
with the inner surface of the fastener receiving element, the first
end of the third elongated member being opposite the second end of
the third elongated member, wherein the first elongated member, the
second elongated member, and the third elongated member are
separate elements.
20. The fastener retaining component of claim 15, wherein the
fastener retaining component comprises spring steel.
21. The fastener retaining component of claim 1, wherein the first
elongated member comprises spring steel, and wherein the second
elongated member comprises spring steel.
22. The system of claim 8, wherein the middle portion, of the first
elongated member, and the middle portion, of the second elongated
member, are a same middle portion shared by the first elongated
member and the second elongated member.
Description
TECHNICAL FIELD
[0001] The present disclosure relates generally to a fastener
retaining component to hold a position of a fastener within a
component.
BACKGROUND
[0002] Ground engaging tools may be secured in place to a work
implement of a machine, such as a mining machine, a construction
machine, an earth moving machine, and/or the like. For example, the
ground engaging tools may be secured using bolts positioned within
the ground engaging tools. In light of the significant size and
weight of the work implement and the ground engaging tools, the
work implement may be suspended (e.g., using a crane or other
suspension mechanism) during the process of securing the ground
engaging tools to the work implement. In this regard, securing the
ground engaging tools to the work implement may require one or more
workers to position the bolts within the ground engaging tools
while manually supporting the suspended work implement.
[0003] An anti-loosening unit bolt nut with fixing device is
disclosed in Chinese Patent Application Publication No. 108757695
issued to Jining Polytechnic ("the '695 publication"). The '695
publication discloses that the anti-loosening unit bolt nut
includes a bolt, a fixed transverse rod, and a groove nut. While
the '695 publication discloses an anti-loosening unit bolt nut with
fixing device, the '695 publication does not address the problems
above with respect to securing the ground engaging tools to the
work implement.
[0004] The fastener retaining component of the present disclosure
solves one or more of the problems set forth above and/or other
problems in the art.
SUMMARY
[0005] According to some implementations, a fastener retaining
component may include a first elongated member comprising: a first
set of component engaging elements extending from a first end of
the first elongated member to engage with the component, a second
set of component engaging elements extending from a second end of
the first elongated member to engage with the component, and a
first middle portion to engage with the fastener; and a second
elongated member comprising: a third set of component engaging
elements extending from a first end of the second elongated member
to engage with the component, a fourth set of component engaging
elements extending from a second end of the second elongated member
to engage with the component, and a second middle portion to engage
with the fastener.
[0006] According to some implementations, a system may include a
fastener; and a fastener retaining component to retain the fastener
within a fastener receiving element of the component, the fastener
retaining component comprising: a first elongated member, a length
of the first elongated member being greater than a diameter of the
fastener receiving element, and a second elongated member, a length
of the second elongated member being greater than the diameter of
the fastener receiving element, the fastener retaining component
being configured to be press-fit within the fastener receiving
element such that press-fitting the fastener retaining component,
within the fastener receiving element, increases a tension in the
fastener retaining component to cause the first elongated member
and the second elongated member to engage with an inner surface of
the fastener receiving element and to retain the fastener within
the fastener receiving element.
[0007] According to some implementations, a fastener retaining
component may include a first elongated member, a length of the
first elongated member being greater than a diameter of a fastener
receiving element of a component, and a second elongated member, a
length of the second elongated member being greater than the
diameter of the fastener receiving element, the fastener retaining
component being configured to be press-fit within the fastener
receiving element such that press-fitting the fastener retaining
component, within the fastener receiving element, increases a
tension in the fastener retaining component to cause the first
elongated member and the second elongated member to engage with an
inner surface of the fastener receiving element and to retain a
fastener within the fastener receiving element.
BRIEF DESCRIPTION OF THE DRAWINGS
[0008] FIG. 1 is a diagram of an example receiving structure to
which multiple components are coupled via multiple fasteners.
[0009] FIG. 2 is a diagram of an example fastener retaining
component that may be used with the fasteners of FIG. 1.
[0010] FIG. 3 is a cross-sectional view diagram of the receiving
structure of FIG. 1 to which a component of FIG. 1 is coupled via a
fastener of FIG. 1.
[0011] FIG. 4 is a diagram of an example fastener retaining
component that may be used with the fasteners of FIG. 1.
DETAILED DESCRIPTION
[0012] This disclosure relates to a fastener retaining component to
hold a position of a fastener within a component. The fastener
retaining component has universal applicability to different
machines. The term "machine" may refer to any machine that performs
an operation associated with an industry, such as, for example,
mining, construction, farming, transportation, or any other
industry. As some examples, the machine may be a vehicle, a backhoe
loader, a cold planer, a wheel loader, a compactor, a feller
buncher, a forest machine, a forwarder, a harvester, an excavator,
an industrial loader, a knuckleboom loader, a material handler, a
motor grader, a pipelayer, a road reclaimer, a skid steer loader, a
skidder, a telehandler, a tractor, a dozer, a tractor scraper, or
another above ground equipment, underground equipment, or marine
equipment. Moreover, one or more implements may be connected to the
machine.
[0013] FIG. 1 is a diagram of an example receiving structure to
which multiple components are coupled via multiple fasteners. As an
example, receiving structure 100 may be an implement of a machine.
Receiving structure 100 is shown in FIG. 1 as a load bucket but may
be another type of implement. As shown in FIG. 1, one or more
fasteners 110 (referred to individually as "fastener 110" and
collectively as "fasteners 110") may secure one or more components
120 (referred to individually as "component 120" and collectively
as "components 120") to receiving structure 100. For example, each
component 120 may be mechanically coupled to receiving structure
100 via one or more fasteners 110 received through one or more work
implement holes 102.
[0014] As shown in FIG. 1, fastener 110 is a plow bolt.
Alternatively, fastener 110 may include a carriage bolt or a hex
head bolt. As shown in FIG. 1, fastener 110 includes a head 112 and
a thread component 118. Component 120 may be configured to perform
work on material. As shown in FIG. 1, for example, component 120 is
a ground engaging tool, such as a ground engaging tooth. However,
component 120 may be another component that may be secured to
receiving structure 100. As shown in FIG. 1, component 120 includes
a bottom surface 122 with one or more fastener receiving elements
124 (referred to individually as "fastener receiving element 124"
and collectively as "fastener receiving elements 124") that may
receive one or more fasteners 110. Each fastener receiving element
124 may include an inner surface 126 and may have a diameter D.
[0015] As shown in FIG. 1, fastener 110 is received through
fastener receiving element 124 of component 120. A portion of
fastener 110 may be received through fastener receiving element
124. For example, thread component 118 of fastener 110 may be
received through fastener receiving element 124.
[0016] As shown in FIG. 1, fastener retaining component 130 may be
inserted in fastener receiving element 124 after fastener 110 is
received through fastener receiving element 124. As shown in FIG.
1, fastener retaining component 130 includes elongated members 132
(referred to individually as "elongated member 132" and
collectively as "elongated members 132"). An elongated member 132
includes a set of component engaging elements 134 (referred to
individually as "component engaging elements 134" and collectively
as "component engaging elements 134") and a middle portion 136. As
shown in FIG. 1, component engaging elements 134 may be configured
to engage with inner surface 126 of fastener receiving element 124
when fastener retaining component 130 is inserted within fastener
receiving element 124. Additionally, middle portion 136 may be
configured to engage with head 112 of fastener 110 when fastener
retaining component 130 is inserted within fastener receiving
element 124.
[0017] In this regard, as will be explained in more detailed below,
fastener retaining component 130 may be configured to be press-fit
within fastener receiving element 124 such that press-fitting
fastener retaining component 130, within fastener receiving element
124, increases a tension in fastener retaining component 130 to
cause elongated members 132 to engage with inner surface 126 of
fastener receiving element 124 and to retain fastener 110 within
fastener receiving element 124.
[0018] As shown in FIG. 1, system 150 (or pre-installation system
150) includes fasteners 110, component 120, and fastener retaining
components 130. As will be apparent from the description herein, by
retaining fasteners 110 within fastener receiving elements 124
using fastener retaining components 130 prior to securing component
120 to receiving structure 100, the process of securing component
120 to receiving structure 100 may be improved.
[0019] As indicated above, FIG. 1 is provided as an example. Other
examples may differ from what was described in connection with FIG.
1.
[0020] FIG. 2 is a diagram of an example fastener retaining
component 130 that may be used with the fasteners of FIG. 1. In
some implementations, fastener retaining component 130 may be
constructed from a flexible material, such as spring steel. As
shown in FIG. 2, fastener retaining component 130 is in a rested
configuration (or rested state) prior to being inserted in fastener
receiving element 124. Fastener retaining component 130 may
transition to a tensioned configuration (or tensioned state) when
inserted in fastener receiving element 124, as will be described in
more detail in connection with FIG. 3.
[0021] As shown in FIG. 2, fastener retaining component 130
includes elongated members 132. Elongated members 132 may be formed
from a same sheet of material (e.g., a same sheet metal such as,
for example, spring steel). For example, elongated members 132 may
be formed by stamping the sheet of material, laser cutting the
sheet of material, flame cutting the sheet of material, water
cutting the sheet of material, and/or the like. As shown in FIG. 2,
fastener retaining component 130 includes two elongated members 132
that form an X shape with an angle .alpha. and an angle .beta.. In
some implementations, angle .alpha. may be equal to angle .beta..
Alternatively, angle .alpha. may be less than angle .beta..
Alternatively, angle .alpha. may be greater than angle .beta..
[0022] As shown in FIG. 2, each elongated member 132 has a length L
and a width W. Length L may be greater than diameter D of fastener
receiving element 124. An elongated member 132 includes a first set
of component engaging elements 134 extending from a first end, a
middle portion 136, and a second set of component engaging elements
134 extending from a second end that is opposite the first end.
Middle portion 136 may be located between the first end and the
second end. The first set of component engaging elements 134 and
the second set of component engaging elements 134 may include the
same number of component engaging elements 134. Alternatively, the
first set of component engaging elements 134 and the second set of
component engaging elements 134 may include different numbers of
component engaging elements 134. In some implementations, an
elongated member 132 may include a single set of component engaging
elements 134.
[0023] As shown in FIG. 2, elongated members 132 may share a same
middle portion 136. The number, arrangement, and dimensions of
elongated members 132 shown in FIG. 2 are merely provided as an
example. In practice, fastener retaining component 130 may have a
different (greater or lesser) number, a different arrangement,
and/or different dimensions of elongated members 132 than what is
shown in FIG. 2.
[0024] Each set of component engaging elements 134 may include one
or more component engaging elements 134 that are configured to
engage with inner surface 126 of fastener receiving element 124
when fastener retaining component 130 is inserted within fastener
receiving element 124. As shown in FIG. 2, a component engaging
element 134 may have a width W.sub.e. As shown in FIG. 2, a
distance D.sub.e separates each component engaging element 134 of a
set of component engaging elements 134. In some implementations,
width W.sub.e and distance D.sub.e may be proportional to width W.
For example, width W.sub.e may be 1/4 of width W and D.sub.e may be
1/2 of width W. The number, arrangement, and dimensions of
component engaging elements 134 shown in FIG. 2 are merely provided
as an example. In practice, fastener retaining component 130 may
have a different (greater or lesser) number, a different
arrangement, and/or different dimensions of component engaging
elements 134 than what is shown in FIG. 2.
[0025] In some implementations, middle portion 136 may be
configured to be aligned with respect to a center point of fastener
receiving element 124 (e.g., a center of diameter D) when fastener
retaining component 130 is inserted within fastener receiving
element 124. For example, middle portion 136 may be configured to
be centered with respect to the center point of fastener receiving
element 124. In this regard, a central axis C.sub.a (or
longitudinal axis) of an elongated member 132 may intersect the
center of diameter D of fastener receiving element 124.
[0026] As indicated above, FIG. 2 is provided as an example. Other
examples may differ from what was described in connection with FIG.
2. For example, instead of elongated members 132 sharing a same
middle portion 136 as shown in FIG. 2, elongated members 132 may be
separate elements (e.g., two separate elongated members 132, three
separate elongated members 132, and so on). In this regard,
elongated members 132 may be connected (e.g., at their respective
middle portion 136) using a fastening element such as, for example,
a rivet, a pin, a screw, and/or the like.
[0027] FIG. 3 is a cross-sectional view diagram of the receiving
structure 100 of FIG. 1 to which a component of FIG. 1 is coupled
via a fastener of FIG. 1. As shown in FIG. 3, component 120 is
mechanically coupled to receiving structure 100 via fastener 110.
As shown in FIG. 3, fastener retaining component 130 may be
inserted in fastener receiving element 124 after fastener 110 is
received through fastener receiving element 124. For example, after
fastener 110 is received through fastener receiving element 124,
fastener retaining component 130 may be press-fit within fastener
receiving element 124. In this regard, fastener retaining component
130 may transition from a rested configuration (prior to being
press-fit as shown in FIG. 2) to a tensioned configuration that
causes elongated member 132 to press outwardly to engage with inner
surface 126 of fastener receiving element 124. As shown in FIG. 3,
component engaging elements 134 engage with inner surface 126 of
fastener receiving element 124. Additionally, middle portion 136
may be extended inwardly to engage with head 112 of fastener
110.
[0028] In other words, press-fitting fastener retaining component
130 within fastener receiving element 124 increases a tension in
fastener retaining component 130 to cause elongated member 132 to
engage with inner surface 126 of fastener receiving element 124 and
cause middle portion 136 to engage with head 112 of fastener 110,
thereby retaining fastener 110 within fastener receiving element
124. Accordingly, using fastener retaining component 130 to retain
fasteners 110 within component 120 (prior to securing component 120
to receiving structure 100) decreases or eliminates the need to
manually support receiving structure 100 (e.g., suspended using a
suspension mechanism) when securing component 120 to receiving
structure 100.
[0029] While the disclosure herein is provided with respect to
using fastener retaining component 130 to retain or secure the
position of fastener 110, the foregoing disclosure may be
applicable to using fastener retaining component 130 to retain or
secure the position of a screw, a pin, a rivet, and/or the
like.
[0030] As indicated above, FIG. 3 is provided as an example. Other
examples may differ from what was described in connection with FIG.
3.
[0031] FIG. 4 is a diagram of an example fastener retaining
component 400 that may be used with a fastener of FIG. 1. The
elements of fastener retaining component 400 have been described
above with respect to FIG. 2. As shown in FIG. 4, fastener
retaining component 400 includes an additional elongated member
132.
[0032] In practice, fastener retaining component 130 may have
different shapes in different contexts. One example of a different
shape of fastener retaining component 130 is shown in FIG. 4. In
other contexts, fastener retaining component 130 may be I-shaped
(with a single elongated member 132), Y-shaped (with three
elongated members 132 meeting at middle portion 136), eight-point
asterisk-shaped (with four elongated members 132 meeting at middle
portion 136), and/or the like.
[0033] As indicated above, FIG. 4 is provided as an example. Other
examples may differ from what was described in connection with FIG.
4.
INDUSTRIAL APPLICABILITY
[0034] The disclosed fastener retaining component (e.g., fastener
retaining component 130, fastener retaining component 400, and/or
the like) may be used with different fasteners in different
components to maintain the position of the fasteners within the
components. The disclosed fastener retaining component may be
configured to be inserted in a fastener receiving element of a
component (e.g., by being press-fit in the fastener retaining
component) after the fastener has been received through the
fastener receiving element. The disclosed fastener retaining
component may include elongated members (e.g., elongated members
132) with component engaging elements (e.g., component engaging
elements 134) and a middle portion (e.g., middle portion 136). In
this regard, the component engaging elements engage with an inner
surface of a component while the middle portion engages with a
fastener inserted in a fastener receiving element of the component,
thereby securing a position of the fastener within the
component.
[0035] Several advantages may be associated with the disclosed
fastener retaining component. For example, using the fastener
retaining component to retain a fastener within a component prior
to securing the component to a receiving structure may decrease or
eliminate the need to manually support the receiving structure when
securing the component to the receiving structure. In this case,
the receiving structure may be suspended using a suspension
mechanism due to the size and weight of the receiving structure.
Thus, the installation process of the component on the receiving
structure may be improved. For example, the speed of the
installation process may be improved by decreasing or eliminating
the need to manually support the receiving structure during the
installation process. As it may be apparent from the description
herein, it is not desirable to position a fastener within the
component while manually supporting the suspended receiving
structure.
[0036] Furthermore, pre-installing the fastener within the
component and using the fastener retaining component to retain the
fastener within the component may improve the accuracy of the
installation process of the component on the receiving structure.
Furthermore, pre-installing the fastener within the component and
using the fastener retaining component to retain the fasteners
within a component may reduce the amount of resources for the
installation process. For example, the amount of workers typically
required for such installation process may be reduced.
[0037] As used herein, the articles "a" and "an" are intended to
include one or more items, and may be used interchangeably with
"one or more." Also, as used herein, the terms "has," "have,"
"having," or the like are intended to be open-ended terms. Further,
the phrase "based on" is intended to mean "based, at least in part,
on." The foregoing disclosure provides illustration and
description, but is not intended to be exhaustive or to limit the
implementations to the precise form disclosed. Modifications and
variations may be made in light of the above disclosure or may be
acquired from practice of the implementations. It is intended that
the specification be considered as an example only, with a true
scope of the disclosure being indicated by the following claims and
their equivalents. Even though particular combinations of features
are recited in the claims and/or disclosed in the specification,
these combinations are not intended to limit the disclosure of
various implementations. Although each dependent claim listed below
may directly depend on only one claim, the disclosure of various
implementations includes each dependent claim in combination with
every other claim in the claim set.
* * * * *