US3155014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic piston
Assignee: Garlock Inc
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Filing: 1961-01-23
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Granted: 1964-11-03
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Expires: 1981-01-23
Abstract
No abstract record available.
Inventors
- 👤 Genz Orville Ferdnand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:49
CPC Classifications
F; F16; F16J; F16J1/00; F16J1/02; F05; F05C; F05C2225/00; F05C2225/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A PISTON ASSEMBLY ATTACHED TO A PISTON ROD FOR BEING RECIPRROCATED IN A CYLINDER COMPRISING AT LEAST TWO BODY MEMBERS HAVING A DIAMETER LESS THAN THE INSIDE DIAMETER OF THE CYLINDER WHEN THE PISTON ASSEMBLY AND CYLINDER ARE AT ENVIRONMENTAL TEMPERATURE, PACKING RINGS CARRIED BY THE PISTON ASSEMBLY IN CONTACT WITH THE WALL OF THE CYLINDER, SAID BODY MEMBERS BEING FORMED OF A PLASTIC MATERIAL HAVING A HIGHER DEGREE OF THERMAL EXPANSION THAN THE MATERIAL OF THE CYLINDER, SAID BODY MEMBERS BEING ADAPTED TO EXPAND INTO ENGAGEMENT WITH THE WALL OF THE CYLINDER IN RESPONSE TO AN INCREASE IN THE OPERATING TEMPERATURE.
Claim 2
Dependent Claim
102 words
A PISTON ASSEMBLY ATTACHED TO A PISTON ROD FOR BEING RECIPRROCATED IN A CYLINDER COMPRISING AT LEAST TWO BODY MEMBERS HAVING A DIAMETER LESS THAN THE INSIDE DIAMETER OF THE CYLINDER WHEN THE PISTON ASSEMBLY AND CYLINDER ARE AT ENVIRONMENTAL TEMPERATURE, PACKING RINGS CARRIED BY THE PISTON ASSEMBLY IN CONTACT WITH THE WALL OF THE CYLINDER, SAID BODY MEMBERS BEING FORMED OF A PLASTIC MATERIAL HAVING A HIGHER DEGREE OF THERMAL EXPANSION THAN THE MATERIAL OF THE CYLINDER, SAID BODY MEMBERS BEING ADAPTED TO EXPAND INTO ENGAGEMENT WITH THE WALL OF THE CYLINDER IN RESPONSE TO AN INCREASE IN THE OPERATING TEMPERATURE.
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) | 1967-11-03 | 1968-05-04 | 1968-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-03 | 1972-05-04 | 1972-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-03 | 1976-05-04 | 1976-11-03 | $7700.00 | Window Closed / Lapsed |