US3235244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Energy absorbing device for dock bumpers
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1963-09-13
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Granted: 1966-02-15
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Expires: 1983-09-13
Abstract
No abstract record available.
Inventors
- 👤 Richard D Hein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:10
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/20; E02B3/26; B; B63; B63C; B63C5/00; B63C5/02; B63C5/04; F; F16; F16F; F16F1/00; F16F1/36; F16F1/38; F16F1/3835; F16F1/42; F16F1/52; F16F1/54; F16F2236/00; F16F2236/12; F16F2236/123; Y; Y02; Y02A; Y02A30/00; Y02A30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
AN ENERGY ABSORBING DEVICE FOR DOCK BUMPERS COMPRISING: A CYLINDRICAL BASE MOUNT HAVING UPPER AND LOWER ENDS THERETO, A CUP MOUNT COAXIALLY DISPOSED IN THE UPPER END OF SAID BASE MOUNT, SAID CUP MOUNT HAVING A FRUSTO-CONICAL PORTION THERETO, THE MAJOR DIAMETER AND THE LENGTH OF THE FRUSTO-CONICAL PORTION OF SAID CUP MOUNT BEING APPROXIMATELY EQUAL TO ONE-HALF OF THE INNER DIAMETER OF SAID BASE MOUNT, THE FRUSTOCONICAL PORTION OF SAID CUP MOUNT TAPERING DOWNWARDLY AND INWARDLY AWAY FROM THE INNER SURFACES OF SAID BASE MOUNT AT AN ANGLE OF APPROXIMATELY 15* FROM THE AXIS THEREOF, SAID FRUSTO-CONICAL PORTION EXTENDING APPROXIMATELY ONE-HALF THE LENGTH THEREOF INTO THE UPPER END OF SAID BASE MOUNT; AN ESSENTIAL FRUSTO-CONICAL ANNULAR LASTOMERIC MEMBER CONNECTED BETWEEN THE OPPOSED SURFACES OF SAID MOUNTS, SAID MEMBER BEING SUBSTANTIALLY EQUAL IN LONGITUDINAL THICKNESS TO 30 PERCENT OF THE MAJOR DIAMETER THEREOF; SAID MEMBER PROVIDING A SHEAR RESISTANCE TO TELESCOPING MOTION OF SAID MOUNTS FOR APPROXIMATELY THE FIRST HALF OF THE TELESCOPING STROKE THEREOF AND PROVIDING DECREASING COMPRESSIVE AND CONTINUED INCREASING SHEAR RESISTANCE TO THE TELESCOPING MOTION FOR THE REMAINDER OF THE STROKE THEREOF.
Claim 2
Dependent Claim
185 words
AN ENERGY ABSORBING DEVICE FOR DOCK BUMPERS COMPRISING: A CYLINDRICAL BASE MOUNT HAVING UPPER AND LOWER ENDS THERETO, A CUP MOUNT COAXIALLY DISPOSED IN THE UPPER END OF SAID BASE MOUNT, SAID CUP MOUNT HAVING A FRUSTO-CONICAL PORTION THERETO, THE MAJOR DIAMETER AND THE LENGTH OF THE FRUSTO-CONICAL PORTION OF SAID CUP MOUNT BEING APPROXIMATELY EQUAL TO ONE-HALF OF THE INNER DIAMETER OF SAID BASE MOUNT, THE FRUSTOCONICAL PORTION OF SAID CUP MOUNT TAPERING DOWNWARDLY AND INWARDLY AWAY FROM THE INNER SURFACES OF SAID BASE MOUNT AT AN ANGLE OF APPROXIMATELY 15* FROM THE AXIS THEREOF, SAID FRUSTO-CONICAL PORTION EXTENDING APPROXIMATELY ONE-HALF THE LENGTH THEREOF INTO THE UPPER END OF SAID BASE MOUNT; AN ESSENTIAL FRUSTO-CONICAL ANNULAR LASTOMERIC MEMBER CONNECTED BETWEEN THE OPPOSED SURFACES OF SAID MOUNTS, SAID MEMBER BEING SUBSTANTIALLY EQUAL IN LONGITUDINAL THICKNESS TO 30 PERCENT OF THE MAJOR DIAMETER THEREOF; SAID MEMBER PROVIDING A SHEAR RESISTANCE TO TELESCOPING MOTION OF SAID MOUNTS FOR APPROXIMATELY THE FIRST HALF OF THE TELESCOPING STROKE THEREOF AND PROVIDING DECREASING COMPRESSIVE AND CONTINUED INCREASING SHEAR RESISTANCE TO THE TELESCOPING MOTION FOR THE REMAINDER OF THE STROKE THEREOF.
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) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |