US3349418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low friction structural bearing
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1965-07-20
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Granted: 1967-10-31
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Expires: 1985-07-20
Abstract
No abstract record available.
Inventors
- 👤 Richard D Hein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:01
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C33/201; E; E01; E01D; E01D19/00; E01D19/04; E01D19/041; F16C2350/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
IN A BRIDGE HAVING A STRUCTURAL BEAM RESTING UPON A SUPPORT, MEANS FOR ACCOMMODATING LINEAR AND ANGULAR TRAVEL OF SAID BEAM RELATIVE TO SAID SUPPORT, SAID MEANS COMPRISING A FIRST RELATIVELY FLAT RECTANGULAR BEARING PAD RESTING UPON SAID SUPPORT AND A SECOND SIMILARLY SHAPED BEARING PAD STACKED UPON SAID FIRST BEARING PAD AND SUPPORTING THE END OF SAID BEAM, THE CONTACTING FACES OF EACH OF SAID BEARING PADS CONSISTING OF A LAYER OF A LOW FRICTION FLUOROCARBON POLYMERIC MATERIAL, THE SURFACE OF EACH OF SAID PADS IN CONTACT WITH ITS ADJACENT STRUCTURAL MEMBER COMPOSED OF A COMPRESSIBLE ELASTOMERIC MATERIAL, AND EACH OF SAID BEARINGS HAVING A RIGID REINFORCING PLATE INTERPOSED BETWEEN, AND SECURED TO, SAID ELASTOMERIC MATERIAL AND SAID LOW FRICTION POLYMERIC MATERIAL.
Claim 2
Dependent Claim
123 words
IN A BRIDGE HAVING A STRUCTURAL BEAM RESTING UPON A SUPPORT, MEANS FOR ACCOMMODATING LINEAR AND ANGULAR TRAVEL OF SAID BEAM RELATIVE TO SAID SUPPORT, SAID MEANS COMPRISING A FIRST RELATIVELY FLAT RECTANGULAR BEARING PAD RESTING UPON SAID SUPPORT AND A SECOND SIMILARLY SHAPED BEARING PAD STACKED UPON SAID FIRST BEARING PAD AND SUPPORTING THE END OF SAID BEAM, THE CONTACTING FACES OF EACH OF SAID BEARING PADS CONSISTING OF A LAYER OF A LOW FRICTION FLUOROCARBON POLYMERIC MATERIAL, THE SURFACE OF EACH OF SAID PADS IN CONTACT WITH ITS ADJACENT STRUCTURAL MEMBER COMPOSED OF A COMPRESSIBLE ELASTOMERIC MATERIAL, AND EACH OF SAID BEARINGS HAVING A RIGID REINFORCING PLATE INTERPOSED BETWEEN, AND SECURED TO, SAID ELASTOMERIC MATERIAL AND SAID LOW FRICTION POLYMERIC MATERIAL.
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) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |