Patent US3368697A successfully refreshed from Google Patents.
US3368697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cushioning device
Assignee: W H MINER Inc
•
Filing: 1966-03-22
•
Granted: 1968-02-13
•
Expires: 1986-03-22
Abstract
No abstract record available.
Inventors
- 👤 Robert L Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:48
CPC Classifications
B; B61; B61G; B61G9/00; B61G9/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A DAMPED SPRING COMPRISING AN ELONGATED CASING WITH A CHAMBER THEREIN, A PISTON ROD EXTENDING THROUGH SAID CHAMBER AND HAVING A FIRST AND SECOND SECTIONS, SAID FIRST PISTON ROD SECTION HAVING A LARGER DIAMETER THAN SAID SECOND PISTON ROD SECTION, A COLLAR ASSEMBLY ON SAID SECOND PISTON ROD SECTION AND BEING MOVABLE IN ONE DIRECTION THEREWITH, SAID COLLAR ASSEMBLY HAVING A LARGER DIAMETER THAN SAID FIRST PISTON ROD SECTION, A PISTON ON SAID PISTON ROD WITHIN SAID CHAMBER INTERMEDIATE SAID FIRST AND SECOND PISTON ROD SECTIONS AND PRESENTING AXIAL ORIFICE MEANS, AND A COMPRESSIBLE SOLID FILLING SAID CHAMBER FOR PROVIDING A DAMPING AND SPRING FORCE ON SAID PISTON ROD AND SAID PISTON AS SAID FIRST PISTON ROD SECTION OR SAID COLLAR ASSEMBLY MOVES INTO SAID CHAMBER AND REDUCES THE VOLUME OF SAID SOLID.
Claim 2
Dependent Claim
133 words
A DAMPED SPRING COMPRISING AN ELONGATED CASING WITH A CHAMBER THEREIN, A PISTON ROD EXTENDING THROUGH SAID CHAMBER AND HAVING A FIRST AND SECOND SECTIONS, SAID FIRST PISTON ROD SECTION HAVING A LARGER DIAMETER THAN SAID SECOND PISTON ROD SECTION, A COLLAR ASSEMBLY ON SAID SECOND PISTON ROD SECTION AND BEING MOVABLE IN ONE DIRECTION THEREWITH, SAID COLLAR ASSEMBLY HAVING A LARGER DIAMETER THAN SAID FIRST PISTON ROD SECTION, A PISTON ON SAID PISTON ROD WITHIN SAID CHAMBER INTERMEDIATE SAID FIRST AND SECOND PISTON ROD SECTIONS AND PRESENTING AXIAL ORIFICE MEANS, AND A COMPRESSIBLE SOLID FILLING SAID CHAMBER FOR PROVIDING A DAMPING AND SPRING FORCE ON SAID PISTON ROD AND SAID PISTON AS SAID FIRST PISTON ROD SECTION OR SAID COLLAR ASSEMBLY MOVES INTO SAID CHAMBER AND REDUCES THE VOLUME OF SAID SOLID.
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) | 1971-02-12 | 1971-08-14 | 1972-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-12 | 1975-08-14 | 1976-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-12 | 1979-08-14 | 1980-02-13 | $7700.00 | Window Closed / Lapsed |