Patent US3843216A successfully refreshed from Google Patents.
US3843216A
Expired / Lapsed
US
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Cylindrical bearing assembly
Assignee: Caterpillar Inc
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Filing: 1972-12-11
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Granted: 1974-10-22
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Expires: 1992-12-11
Abstract
Abstract A cylindrical bearing assembly including a cylindrical bearing sleeve and a rigid cylindrical bearing support member which encircles and supports the bearing sleeve, a pair of seals for sealing the bearing surface of the bearing sleeve, and a pair of retaining grooves and flanges formed in the rigid cylindrical bearing support member for retaining the bearing sleeve and seals therein.
Inventors
- 👤 T Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:26
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/72; F16C33/74; F16C33/02; F16C33/04; F16C33/20; F16C2202/00; F16C2202/50; F16C2208/00; F16C2208/20; F16C2208/30; F16C2208/32
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
170 words
In combination a first member, a second member, and a cylindrical bearing assembly, said assembly comprising; a cylindrical bearing sleeve member an integral bearing surface thereon and having axially spaced opposite end portions, bearing support means mounted within said first member for retaining and rigidly supporting said unitary bearing sleeve member, said cylindrical bearing sleeve member being coaxial with and mounted within said bearing support means and said bearing support means extending axially beyond said axially-spaced opposite end portions of said cylindrical bearing sleeve member, seal means mounted upon said bearing support means and located proximate said axially spaced opposite end portions upon said portions of said bearing support means which extend axially beyond said opposite end portions of said bearing sleeve member for sealing said bearing surface against debris, and retaining means formed by said bearing support means for retaining said bearing sleeve member and for retaining said seal means within said bearing support means and for limiting axial movement of said bearing sleeve member and said seal means.
Claim 2
Dependent Claim
170 words
In combination a first member, a second member, and a cylindrical bearing assembly, said assembly comprising; a cylindrical bearing sleeve member an integral bearing surface thereon and having axially spaced opposite end portions, bearing support means mounted within said first member for retaining and rigidly supporting said unitary bearing sleeve member, said cylindrical bearing sleeve member being coaxial with and mounted within said bearing support means and said bearing support means extending axially beyond said axially-spaced opposite end portions of said cylindrical bearing sleeve member, seal means mounted upon said bearing support means and located proximate said axially spaced opposite end portions upon said portions of said bearing support means which extend axially beyond said opposite end portions of said bearing sleeve member for sealing said bearing surface against debris, and retaining means formed by said bearing support means for retaining said bearing sleeve member and for retaining said seal means within said bearing support means and for limiting axial movement of said bearing sleeve member and said seal means.
Claim 3
Dependent Claim
22 words
The cylindrical bearing assembly of claim 1 wherein said cylindrical bearing sleeve member is comprised at least partially of non-metallic self-lubricating material.
Claim 4
Dependent Claim
22 words
The cylindrical bearing assembly of claim 2 wherein said cylindrical bearing sleeve member is comprised at least partially of woven polytetrafluoroethylene fibers.
Claim 5
Dependent Claim
20 words
The cylindrical bearing assembly of claim 3 wherein said cylindrical bearing support means are fabricated from a rigid metallic material.
Claim 6
Dependent Claim
19 words
The cylindrical bearing assembly of claim 4 wherein said seal means include a pair of annular rubber seal rings.
Claim 7
Dependent Claim
21 words
The cylindrical bearing assembly of claim 4 wherein said seal means include a pair of annular resilient plastic material seal rings.
Claim 8
Dependent Claim
44 words
The cylindrical bearing assembly of claim 1 wherein said retaining means include a pair of radially inwardly extending flanges and an annular groove adjacent each flange and wherein one of each groove and adjacent flange set is located adjacent each said opposite end portion.
Claim 9
Dependent Claim
163 words
In combination, a first member, a second member, and a cylindrical bearing assembly for permitting relative rotary motion between such members comprising a cylindrical unitary bearing sleeve member having an internal integral bearing surface thereupon and having axially spaced opposite end portions, a cylindrical bearing support member coaxial with and in supporting relation to said bearing sleeve member and extending axially beyond said spaced opposite end portions, said bearing support member being mounted non-rotationally within said first member, said second member transpiercing said cylindrical bearing sleeVe member, seal means mounted within said bearing support member and located proximate said opposite end portions of said bearing sleeve member for sealing said bearing surface against debris, and retaining means forming a portion of said bearing support member in said portions thereof extending axially beyond said spaced opposite end portions for holding said sleeve member and said seal means within said support member and for limiting axial movement of said sleeve member and said seal means.
Claim 10
Dependent Claim
163 words
In combination, a first member, a second member, and a cylindrical bearing assembly for permitting relative rotary motion between such members comprising a cylindrical unitary bearing sleeve member having an internal integral bearing surface thereupon and having axially spaced opposite end portions, a cylindrical bearing support member coaxial with and in supporting relation to said bearing sleeve member and extending axially beyond said spaced opposite end portions, said bearing support member being mounted non-rotationally within said first member, said second member transpiercing said cylindrical bearing sleeVe member, seal means mounted within said bearing support member and located proximate said opposite end portions of said bearing sleeve member for sealing said bearing surface against debris, and retaining means forming a portion of said bearing support member in said portions thereof extending axially beyond said spaced opposite end portions for holding said sleeve member and said seal means within said support member and for limiting axial movement of said sleeve member and said seal means.
Claim 11
Dependent Claim
23 words
The cylindrical bearing assembly of claim 8 wherein said sleeve member and said internal bearing surface is comprised of a nonmetallic self-lubricating material.
Claim 12
Dependent Claim
20 words
The cylindrical bearing assembly of claim 9 wherein said non-metallic self-lubricating material is at least partially woven fibers of polytetrafluoroethylene.
Claim 13
Dependent Claim
19 words
The cylindrical bearing assembly of claim 10 wherein said seal means comprises a pair of annular rubber seal rings.
Claim 14
Dependent Claim
31 words
The cylindrical bearing assembly of claim 11 wherein said retaining means include a pair of axially spaced radially inwardly extending flanges and seal means retaining annular groove adjacent to each flange.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |