US3344894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable hydraulic shock absorber
Assignee: Rex Chainbelt Inc
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Filing: 1965-10-14
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Granted: 1967-10-03
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Expires: 1985-10-14
Abstract
No abstract record available.
Inventors
- 👤 Grant F Kenworthy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:18
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/32; F16F9/44; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86734; Y10T137/86743
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
AN ADJUSTABLE HYDRAULIC SHOCK ABSORBER COMPRISING; (A) A HYDRAULIC SHOCK ABSORBER CYLINDER INCLUDING A PISTON OPERABLY MOUNTED THEREIN (B) AN OUTER TUBULAR CYLINDER ROTATABLY POSITIONED OVER THE SHOCK ABSORBER CYLINDER SO THAT AT LEAST A PORTION OF THE INNER SURFACE OF THE OUTER CYLINDER IS CONTIGUOUS TO THE OUTER SURFACE OF THE SHOCK ABSORBER CYLINDER (C) A PLURALITY OF SPACED PARALLEL ANNULAR GROOVES OF GRADUALLY INCREASING WIDTH AND DEPTH IN THE CIRCUMFERENTIAL DIRECTION EXTENDING AT LEAST PARTIALLY AROUND THE CIRCUMFERENCE OF ONE OF THE CYLINDERS WHERE SAID CYLINDERS ARE CONTIGUOUS TO EACH OTHER
Claim 2
Dependent Claim
93 words
AN ADJUSTABLE HYDRAULIC SHOCK ABSORBER COMPRISING; (A) A HYDRAULIC SHOCK ABSORBER CYLINDER INCLUDING A PISTON OPERABLY MOUNTED THEREIN (B) AN OUTER TUBULAR CYLINDER ROTATABLY POSITIONED OVER THE SHOCK ABSORBER CYLINDER SO THAT AT LEAST A PORTION OF THE INNER SURFACE OF THE OUTER CYLINDER IS CONTIGUOUS TO THE OUTER SURFACE OF THE SHOCK ABSORBER CYLINDER (C) A PLURALITY OF SPACED PARALLEL ANNULAR GROOVES OF GRADUALLY INCREASING WIDTH AND DEPTH IN THE CIRCUMFERENTIAL DIRECTION EXTENDING AT LEAST PARTIALLY AROUND THE CIRCUMFERENCE OF ONE OF THE CYLINDERS WHERE SAID CYLINDERS ARE CONTIGUOUS TO 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) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |