Patent US3232390A successfully refreshed from Google Patents.
US3232390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shock absorber including spring loaded valve in piston
Assignee: KYB Corp
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Filing: 1963-07-03
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Granted: 1966-02-01
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Expires: 1983-07-03
Abstract
No abstract record available.
Inventors
- 👤 Chano Takashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:36
CPC Classifications
B; B60; B60G; B60G17/00; B60G17/06; B60G17/08; F; F16; F16F; F16F9/00; F16F9/32; F16F9/50; F16F9/512; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7771; Y10T137/778
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A SHOCK ABSORBER COMPRISING AN ELONGATED HOUSING MEANS CONTAINING A FLUID, A PISTON ROD MOUNTED IN SAID HOUSING MEANS FOR MOVEMENT ALONG THE LENGTH THEREOF, A PISTON HEAD MOUNTED ON SAID PISTON ROD WITHIN SAID HOUSING MEANS, SAID PISTON HEAD BEING DISPOSED IN A SEALING RELATION WITH SAID HOUSING MEANS TO PROVIDE UPPER AND LOWER FLUID CHAMBERS, SAID PISTON HEAD HAVING A FIRST FLUID PASSAGEWAY COMMUNICABLE WITH SAID UPPER AND LOWER FLUID CHAMBERS, A CHECK VALVE MOUNTED ON SAID PISTON HEAD OPERABLE FOR OPENING SAID FIRST FLUID PASSAGEWAY WHEN SAID PISTON HEAD IS MOVED IN A FIRST DIRECTION TOWARD SAID LOWER FLUID CHAMBER, SAID PISTON HEAD HAVING A SECONE FLUID PASSAGEWAY COMMUNICABLE WITH SAID UPPER FLUID CHAMBER AND SAID LOWER FLUID CHAMBER, A VALVE ELEMENT IN SAID SECOND FLUID PASSAGEWAY, YIELDABLE MEANS FOR URGING SAID VALVE ELEMENT IN THE CLOSED POSITION, SAID PISTON HEAD HAVING AN UPPER COMPRESSION CHAMBER COMMUNICABLE WITH SAID SECOND FLUID PASSAGEWAY AND A SIDE OF
Claim 2
Dependent Claim
159 words
A SHOCK ABSORBER COMPRISING AN ELONGATED HOUSING MEANS CONTAINING A FLUID, A PISTON ROD MOUNTED IN SAID HOUSING MEANS FOR MOVEMENT ALONG THE LENGTH THEREOF, A PISTON HEAD MOUNTED ON SAID PISTON ROD WITHIN SAID HOUSING MEANS, SAID PISTON HEAD BEING DISPOSED IN A SEALING RELATION WITH SAID HOUSING MEANS TO PROVIDE UPPER AND LOWER FLUID CHAMBERS, SAID PISTON HEAD HAVING A FIRST FLUID PASSAGEWAY COMMUNICABLE WITH SAID UPPER AND LOWER FLUID CHAMBERS, A CHECK VALVE MOUNTED ON SAID PISTON HEAD OPERABLE FOR OPENING SAID FIRST FLUID PASSAGEWAY WHEN SAID PISTON HEAD IS MOVED IN A FIRST DIRECTION TOWARD SAID LOWER FLUID CHAMBER, SAID PISTON HEAD HAVING A SECONE FLUID PASSAGEWAY COMMUNICABLE WITH SAID UPPER FLUID CHAMBER AND SAID LOWER FLUID CHAMBER, A VALVE ELEMENT IN SAID SECOND FLUID PASSAGEWAY, YIELDABLE MEANS FOR URGING SAID VALVE ELEMENT IN THE CLOSED POSITION, SAID PISTON HEAD HAVING AN UPPER COMPRESSION CHAMBER COMMUNICABLE WITH SAID SECOND FLUID PASSAGEWAY AND A SIDE OF
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) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |