US3170412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chair swing damper
Assignee: RIBIET TRAMWAY Co
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Filing: 1963-05-06
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Granted: 1965-02-23
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Expires: 1983-05-06
Abstract
No abstract record available.
Inventors
- 👤 Tony R Sowder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:49
CPC Classifications
B; B61; B61B; B61B12/00; B61B12/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
IN A MONO-CABLE TRAMWAY PASSENGER CHAIR INCLUDING A HANGER PIVOTALLY SUPPORTED FOR SWINGING MOVEMENTS ABOUT THE SUBSTANTIALLY HORIZONTAL AXIS OF A SINGLE CABLESUPPORTED NON-ROTATABLE SPINDLE, A CHAIR SWINGING MOVEMENT DAMPER, COMPRISING: MEANS FOR CONVERTING MECHANICAL ENERGY TO HEAT; AND MEANS CONNECTING SAID FIRST NAMED MEANS TO SAID SPINDLE AND SAID CHAIR, FOR EFFECTING THE CONVERSION OF SWINGING-MOVEMENT-INDUCED MECHANICAL ENERGY TO HEAT.
Claim 2
Dependent Claim
61 words
IN A MONO-CABLE TRAMWAY PASSENGER CHAIR INCLUDING A HANGER PIVOTALLY SUPPORTED FOR SWINGING MOVEMENTS ABOUT THE SUBSTANTIALLY HORIZONTAL AXIS OF A SINGLE CABLESUPPORTED NON-ROTATABLE SPINDLE, A CHAIR SWINGING MOVEMENT DAMPER, COMPRISING: MEANS FOR CONVERTING MECHANICAL ENERGY TO HEAT; AND MEANS CONNECTING SAID FIRST NAMED MEANS TO SAID SPINDLE AND SAID CHAIR, FOR EFFECTING THE CONVERSION OF SWINGING-MOVEMENT-INDUCED MECHANICAL ENERGY TO HEAT.
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) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |