Patent US3923313A successfully refreshed from Google Patents.
US3923313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-adjusting grease-sealed articular joint
Assignee: Case LLC
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Filing: 1975-05-22
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Granted: 1975-12-02
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Expires: 1995-05-22
Abstract
Abstract A self-adjusting grease-sealed articular joint including a pin and two members encircling the pin and piloted thereon. One of the members has a circular boss on which an elastomeric ring is disposed and is stretched thereover to deflect to a shape which causes the ring to be snug with the boss and to extend to the other of the members to be snug therewith, and thereby present a self-adjusting grease seal between the two members.
Inventors
- 👤 Leonard B Bailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:34
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/3436; F16J15/3456; F16C; F16C11/00; F16C11/04; F16C11/045; F16C33/00; F16C33/72; F16C33/74; Y; Y10; Y10T; Y10T403/00; Y10T403/55; Y10T403/553
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
176 words
A self-adjusting grease-sealed articular joint comprising a pin establishing an axis of articulation of the joint, two members encircling said pin and being relatively movable toward and away from each other in the direction of the axis of said pin, one of said members having a circular boss disposed adjacent the other of said members and with said other of said members having a planar surface facing said boss and being of a size larger than the diameter of said boss, said one member also having a planar surface continguous with and disposed to the side of said boss spaced from the first said planar surface, and an elastomeric grease-seal ring of an annular shape disposed on said boss and having an internal diameter less than the diameter of said boss and stretched onto said boss and be deflected into a concave shape with the outer circumference of said ring disposed against the first said planar surface, and with said ring thereby disposed in the space between said planar surfaces and present a grease seal therebetween.
Claim 2
Dependent Claim
176 words
A self-adjusting grease-sealed articular joint comprising a pin establishing an axis of articulation of the joint, two members encircling said pin and being relatively movable toward and away from each other in the direction of the axis of said pin, one of said members having a circular boss disposed adjacent the other of said members and with said other of said members having a planar surface facing said boss and being of a size larger than the diameter of said boss, said one member also having a planar surface continguous with and disposed to the side of said boss spaced from the first said planar surface, and an elastomeric grease-seal ring of an annular shape disposed on said boss and having an internal diameter less than the diameter of said boss and stretched onto said boss and be deflected into a concave shape with the outer circumference of said ring disposed against the first said planar surface, and with said ring thereby disposed in the space between said planar surfaces and present a grease seal therebetween.
Claim 3
Dependent Claim
59 words
The self-adjusting grease-sealed articular joint as claimed in claim 1, wherein the outer diameter and flexibility of said ring are such that said ring extends from the first said planar surface to the limit of the extent of said boss away from the first said planar surface, to thereby have said ring present a grease seal between said surfaces.
Claim 4
Dependent Claim
41 words
The self-adjusting grease-sealed articular joint as claimed in claim 1, wherein the dimensional differences between the inner and outer diamEters of said ring results in a cross-sectional size of said ring which is greater than the greatest space between said surfaces.
Claim 5
Dependent Claim
33 words
The self-adjusting grease-sealed articular joint as claimed in claim, 1, wherein the elastomeric characteristic of said ring is a urethane material having a 500 percent elongation and a durometer A hardness of 97.
Claim 6
Dependent Claim
70 words
The self-adjusting grease-sealed articular joint as claimed in claim 1, wherein there are two said bosses with one on each side of the other said member which has two said planar surfaces adjacent the respective said bosses, and two said rings disposed on the respective said bosses, and with said other member having a grease opening between its said planar surfaces for receiving grease which can flow to said rings.
Claim 7
Dependent Claim
45 words
The self-adjusting grease-sealed articular joint as claimed in claim 5, wherein said rings are free to be slidable on and axially of said bosses and are free to be slidable along said planar surfaces of said other member, for presenting the self-adjusting grease seal rings.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |