US3216332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractable shock strut
Assignee: LIONEL PACIFIC Inc
•
Filing: 1963-06-24
•
Granted: 1965-11-09
•
Expires: 1983-06-24
Abstract
No abstract record available.
Inventors
- 👤 Chambeau Thomas R De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:15
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/06; F15B11/072; F15B11/076; F16; F16F; F16F9/00; F16F9/10; F16F9/14; F16F9/16; F16F9/18; F15B2211/00; F15B2211/30; F15B2211/305; F15B2211/30505; F15B2211/40; F15B2211/405; F15B2211/40515; F15B2211/415; F15B2211/41527; F15B2211/41536; F15B2211/60; F15B2211/61; F15B2211/613; F15B2211/70; F15B2211/705; F15B2211/7051; F15B2211/7055; F15B2211/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A SHOCK ABSORBING STRUT DEVICE, APPARATUS COMPRISING: A HOLLOW CYLINDER HAVING A CYLINDRICAL BORE THEREIN; A CYLINDER HEAD CLOSING THE UPPER END OF SAID BORE; A PLUNGER MEMBER EXTENDING AXIALLY SLIDABLY INTO THE LOWER END OF SAID BORE, SAID PLUNGER MEMBER HAVING AN OUTSIDE DIAMETER LESS THAN THE INSIDE DIAMETER OF SAID BORE, THERE BEING AN INNER ANNULAR SPACE THEREBY FORMED BETWEEN THE EXTERIOR OF SAID PLUNGER MEMBER AND SAID BORE; ANNULAR FLUID SEAL MEANS ADJACENT THE LOWER END OF SAID CYLINDER CLOSING THE LOWER END OF SAID ANNULAR SPACE AND THROUGH WHICH SAID PLUNGER MEMBER AXIALLY SLIDABLY EXTENDS INTO SAID BORE; AN ANNULAR HEAD MEMBER FIXED IN AN INTERMEDIATE SECTION OF THE SAID INTERIOR OF SAID CYLINDER AND THERE BRIDGING SAID ANNULAR SPACE, SAID PLUNGER BEING SEALINGLY SLIDABLE THROUGH SAID ANNULAR HEAD MEMBER; AN ANNULAR PISTON MEMBER FIXED COAXIALLY TO AN INTERMEDIATE SECTION OF THE EXTERIOR OF SAID PLUNGER MEMBER AND SLIDABLE AXIALLY THEREWITH IN SEALING ENGAGE-
Claim 2
Dependent Claim
158 words
A SHOCK ABSORBING STRUT DEVICE, APPARATUS COMPRISING: A HOLLOW CYLINDER HAVING A CYLINDRICAL BORE THEREIN; A CYLINDER HEAD CLOSING THE UPPER END OF SAID BORE; A PLUNGER MEMBER EXTENDING AXIALLY SLIDABLY INTO THE LOWER END OF SAID BORE, SAID PLUNGER MEMBER HAVING AN OUTSIDE DIAMETER LESS THAN THE INSIDE DIAMETER OF SAID BORE, THERE BEING AN INNER ANNULAR SPACE THEREBY FORMED BETWEEN THE EXTERIOR OF SAID PLUNGER MEMBER AND SAID BORE; ANNULAR FLUID SEAL MEANS ADJACENT THE LOWER END OF SAID CYLINDER CLOSING THE LOWER END OF SAID ANNULAR SPACE AND THROUGH WHICH SAID PLUNGER MEMBER AXIALLY SLIDABLY EXTENDS INTO SAID BORE; AN ANNULAR HEAD MEMBER FIXED IN AN INTERMEDIATE SECTION OF THE SAID INTERIOR OF SAID CYLINDER AND THERE BRIDGING SAID ANNULAR SPACE, SAID PLUNGER BEING SEALINGLY SLIDABLE THROUGH SAID ANNULAR HEAD MEMBER; AN ANNULAR PISTON MEMBER FIXED COAXIALLY TO AN INTERMEDIATE SECTION OF THE EXTERIOR OF SAID PLUNGER MEMBER AND SLIDABLE AXIALLY THEREWITH IN SEALING ENGAGE-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |