US3370899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination thrust and radial ball bearing
Assignee: Individual
•
Filing: 1966-06-15
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Granted: 1968-02-27
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Expires: 1986-06-15
Abstract
No abstract record available.
Inventors
- 👤 Phillip R Eklund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:50
CPC Classifications
F; F16; F16C; F16C19/00; F16C19/02; F16C19/04; F16C19/06; F16C33/00; F16C33/30; F16C33/58; F16C33/583; F16C33/585; F16C2240/00; F16C2240/40; F16C2240/70; F16C2240/76; F16C2300/00; F16C2300/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A COMBINATION THRUST AND RADIAL BALL BEARING, COMPRISING: AN INNER RACE; AN OUTER RACE; A PLURALITY OF ROLLING BALL MEMBERS BETWEEN SAID INNER AND OUTER RACES; SAID OUTER RACE HAVING A NONCIRCULAR GROOVE WITH A CENTRAL PORTION HAVING A FIRST PREDETERMINED RADIUS OF CURVATURE AND TWO SIDE PORTIONS HAVING A RADIUS OF CURVATURE GREATER THAN THE RADIUS OF CURVATURE OF SAID CENTRAL PORTION; SAID SIDE PORTIONS BEING POSITIONED TO CONTACT SAID ROLLING BALL MEMBERS AT A FIRST PREDETERMINED CONTACT ANGLE; SAID INNER RACE HAVING A NONCIRCULAR GROOVE WITH A CENTRAL PORTION HAVING A FIRST PREDETERMINED RADIUS OF CURVATURE AND TWO SIDE PORTIONS HAVING A RADIUS OF CURVATURE GREATER THAN THE RADIUS OF CURVATURE OF SAID CENTRAL PORTION; SAID SIDE PORTIONS BEING POSITIONED TO CONTACT SAID ROLLING BALL MEMBERS AT A SECOND PREDETERMINED CONTACT ANGLE; SAID CONTACT ANGLE OF SAID INNER RACE BEING FROM 1* TO 5* GREATER THAN THE CONTACT ANGLE OF SAID OUTER RACE.
Claim 2
Dependent Claim
155 words
A COMBINATION THRUST AND RADIAL BALL BEARING, COMPRISING: AN INNER RACE; AN OUTER RACE; A PLURALITY OF ROLLING BALL MEMBERS BETWEEN SAID INNER AND OUTER RACES; SAID OUTER RACE HAVING A NONCIRCULAR GROOVE WITH A CENTRAL PORTION HAVING A FIRST PREDETERMINED RADIUS OF CURVATURE AND TWO SIDE PORTIONS HAVING A RADIUS OF CURVATURE GREATER THAN THE RADIUS OF CURVATURE OF SAID CENTRAL PORTION; SAID SIDE PORTIONS BEING POSITIONED TO CONTACT SAID ROLLING BALL MEMBERS AT A FIRST PREDETERMINED CONTACT ANGLE; SAID INNER RACE HAVING A NONCIRCULAR GROOVE WITH A CENTRAL PORTION HAVING A FIRST PREDETERMINED RADIUS OF CURVATURE AND TWO SIDE PORTIONS HAVING A RADIUS OF CURVATURE GREATER THAN THE RADIUS OF CURVATURE OF SAID CENTRAL PORTION; SAID SIDE PORTIONS BEING POSITIONED TO CONTACT SAID ROLLING BALL MEMBERS AT A SECOND PREDETERMINED CONTACT ANGLE; SAID CONTACT ANGLE OF SAID INNER RACE BEING FROM 1* TO 5* GREATER THAN THE CONTACT ANGLE OF SAID OUTER RACE.
References Cited (Backward Citations)
BE542876A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |