Patent US4606657A successfully refreshed from Google Patents.
US4606657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic resin ball bearing
Assignee: Chubu Bearing Seisakusho KK
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Filing: 1985-07-12
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Granted: 1986-08-19
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Expires: 2005-07-12
Abstract
Abstract A synthetic resin ball bearing. It comprises an outer race, an inner race and a plurality of balls provided therebetween. The outer race is composed of a first cup-shaped member and a second cup-shaped member. Each cup-shaped member has an opening in the center of the floor portion. The first cup-shaped member is sized to snugly fit generally in the second cup-shaped member. The inner race has an annular shape to be positioned to extend through said respective openings in the first and second cup-shaped members to define an annular chamber in cooperation of said first cup-shaped member and the floor wall of the second cup-shaped member. The annular projection extends into the chamber to define a pair of ball receiving sections. The balls are accommodated within the ball receiving sections.
Inventors
- 👤 Kouichi Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:47
CPC Classifications
F; F16; F16C; F16C19/00; F16C19/02; F16C19/14; F16C19/18; F16C19/181; F16C19/183; F16C13/00; F16C13/006; F16C33/00; F16C33/30; F16C33/58; F16C33/60; F16C33/62; F16C33/72; F16C33/76; F16C33/767; F16C19/184; F16C2300/00; F16C2300/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
209 words
A synthetic resin ball bearing comprising an outer race of a synthetic resin material to receive external load thereon, said race including a first cup-shaped member and a second cup-shaped member, each cup-shaped member having an annular wall with a brim end and a bottom end and a floor wall integrally extending from said bottom end to define a recess therein, said floor wall having an opening in a center thereof, said first cup-shaped member being sized to snugly fit generally in said recess of the second cup-shaped member, said brim end of the first cup-shaped member abutting against the floor wall of the second cup-shaped member therewithin, said openings in the floor walls of the respective first and second cup-shaped members being in alighnment with each other; an inner race of a synthetic resin material having an annular shape to be positioned to extend through said respective openings in the first and second cup-shaped members to define annular chamber in cooperation of said first cup-shaped member and said floor wall of the second cup-shaped member, said inner race having an annular projection extending into said chamber to define a pair of ball receiving sections; and a plurality of balls within each receiving section annularly around said inner race.
Claim 2
Dependent Claim
209 words
A synthetic resin ball bearing comprising an outer race of a synthetic resin material to receive external load thereon, said race including a first cup-shaped member and a second cup-shaped member, each cup-shaped member having an annular wall with a brim end and a bottom end and a floor wall integrally extending from said bottom end to define a recess therein, said floor wall having an opening in a center thereof, said first cup-shaped member being sized to snugly fit generally in said recess of the second cup-shaped member, said brim end of the first cup-shaped member abutting against the floor wall of the second cup-shaped member therewithin, said openings in the floor walls of the respective first and second cup-shaped members being in alighnment with each other; an inner race of a synthetic resin material having an annular shape to be positioned to extend through said respective openings in the first and second cup-shaped members to define annular chamber in cooperation of said first cup-shaped member and said floor wall of the second cup-shaped member, said inner race having an annular projection extending into said chamber to define a pair of ball receiving sections; and a plurality of balls within each receiving section annularly around said inner race.
Claim 3
Dependent Claim
19 words
A synthetic resin bearing according to claim 1, wherein said annular projection defines a pair of rounded guide surfaces.
Claim 4
Dependent Claim
25 words
A synthetic resin bearing according to claim 1, wherein said first cup-shaped member has a rounded inner guide surface annularly extending around said inner race.
Claim 5
Dependent Claim
45 words
A synthetic resin bearing according to claim 1, wherein said floor wall of the first cup-shaped member has an inner guide surface generally extending flatly, said inner guide surface starts, in a vicinity of the opening, to rise increasingly theretoward to form an annular projection.
Claim 6
Dependent Claim
23 words
A synthetic resin bearing according to claim 1, wherein said frist and second cup-shaped members have press-fit engagement means to engage each other.
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) | 1989-08-18 | 1990-02-17 | 1990-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-18 | 1994-02-17 | 1994-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-18 | 1998-02-17 | 1998-08-19 | $7700.00 | Window Closed / Lapsed |