US3920293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing made of plastics
Assignee: Individual
•
Filing: 1974-04-30
•
Granted: 1975-11-18
•
Expires: 1994-04-30
Abstract
Abstract A bearing made up of an inner ring to be mounted on a shaft, a casing serving as an outer ring and surrounding the inner ring concentrically therewith, an annular intermediate element idly rotatably accommodated in an annular space between the inner ring and the casing, and a retainer ring fitted in one open side of the casing to retain the annular intermediate element in position. The annular intermediate element includes several members of circular section equidistantly spaced apart in a circular arrangement and connector plates interconnecting the members in the form of a ring. The intermediate element is slidingly rotatable in point or line contact with the outer peripheral surface of the inner ring and the inner peripheral surface of the casing.
Inventors
- 👤 Hirokazu Takeuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:32
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C17/00; F16C17/12; F16C17/18; F16C2208/00; F16C2208/20; F16C2208/60; F16C2208/66; Y; Y10; Y10S; Y10S16/00; Y10S16/27
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
129 words
A bearing comprising an inner ring adapted to be mounted on a shaft, an annular outer ring surrounding said inner ring concentrically therewith, said rings having opposed parallel surfaces spaced from each other, a plastic annular intermediate element idly rotatably accommodated between said annular surfaces and slidingly rotatable to follow the rotation of one of said rings, and a retainer ring fitted in one open side of the outer ring to retain the annular intermediate element in position, the annular intermediate element having a plurality of members of circular section equidistantly spaced and connector plates integrally formed with said members and interconnecting the members, said members and connector plates being bent in the shape of a ring with a gap between the end members in the plurality of members.
Claim 2
Dependent Claim
129 words
A bearing comprising an inner ring adapted to be mounted on a shaft, an annular outer ring surrounding said inner ring concentrically therewith, said rings having opposed parallel surfaces spaced from each other, a plastic annular intermediate element idly rotatably accommodated between said annular surfaces and slidingly rotatable to follow the rotation of one of said rings, and a retainer ring fitted in one open side of the outer ring to retain the annular intermediate element in position, the annular intermediate element having a plurality of members of circular section equidistantly spaced and connector plates integrally formed with said members and interconnecting the members, said members and connector plates being bent in the shape of a ring with a gap between the end members in the plurality of members.
Claim 3
Dependent Claim
30 words
A bearing as claimed in claim 1 wherein the annular intermediate element is integrally molded of a plastic material taken from the group consisting of polyacetal resin and polyamide resin.
Claim 4
Dependent Claim
25 words
A bearing as claimed in claim 2 wherein the inner ring and the outer ring are of the same plastic material as said intermediate member.
Claim 5
Dependent Claim
21 words
A bearing as claimed in claim 1 wherein said members are cylindrical and are in line contact with said annular surfaces.
Claim 6
Dependent Claim
15 words
A bearing as claimed in claim 4 wherein said annular surfaces are right cylindrical surfaces.
Claim 7
Dependent Claim
14 words
A bearing as claimed in claim 4 wherein said annular surfaces are conical surfaces.
Claim 8
Dependent Claim
21 words
A bearing as claimed in claim 1 wherein said members are spherical and are in point contact with said annular surfaces.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-17 | 1979-05-19 | 1979-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-17 | 1983-05-19 | 1983-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-17 | 1987-05-19 | 1987-11-18 | $7700.00 | Window Closed / Lapsed |