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Patent US3647249A successfully refreshed from Google Patents.
US3647249A
Expired / Lapsed
US
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Ball joint
Assignee: Toyota Motor Corp
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Filing: 1970-09-14
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Granted: 1972-03-07
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Expires: 1990-09-14
Abstract
Abstract IN A BALL JOINT, THE BEARING FOR THE BALL-LIKE ELEMENT COMPRISES A SUPPORT PORTION OF A LUBRICANT-RESISTANT, ELASTICALLY DEFORMABLE RUBBERLIKE MATERIAL HAVING A SURFACE LAYER FORMED TO COMPLEMENT THE BALL-LIKE MEMBER. THE SURFACE LAYER IS OF A WEAR-AND LUBRICANT-RESISTANT SYNTHETIC RESIN HAVING A LOW COEFFICIENT OF FRICTION, AND IS DEFORMABLE IN CONFORMITY WITH THE UNDERLYING ELASTICALLY DEFORMABLE SUPPORT PORTION. THE SURFACE LAYER HAS AN OPENING OR OPENINGS EXTENDING THERETHROUGH WHICH SERVE AS A RESERVOIR FOR A LUBRICATING OIL AND TO MODERATE OR IMPART FLEXIBLITY TO THE SURFACE LAYER. D R A W I N G
Inventors
- 👤 Takashi Baba
- 👤 Chikara Matsuoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:32
CPC Classifications
F; F16; F16C; F16C11/00; F16C11/04; F16C11/06; F16C11/0619; F16C11/0623; F16C11/0652; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32631; Y10T403/32647; Y10T403/32663; Y10T403/32737; Y10T403/32778
Claims Analysis
Total Claims: 0
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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) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |