Patent US3165172A successfully refreshed from Google Patents.
US3165172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal for piston and cylinder devices
Assignee: Cleveland Pneumatic Industries Inc
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Filing: 1962-05-25
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Granted: 1965-01-12
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Expires: 1982-05-25
Abstract
No abstract record available.
Inventors
- 👤 Charles H Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:22
CPC Classifications
F; F02; F02G; F02G1/00; F02G1/04; Y; Y10; Y10S; Y10S277/00; Y10S277/907
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A COMBINATION COMPRISING CYLINDER MEANS, PISTON MEANS COMPRISING A PISTON AND A PISTON ROD CONNECTED THERETO RECIPROCABLE WITHIN SAID CYLINDER, WITH A PORTION OF SAID PISTON AND SAID CYLINDER MEANS DEFINING A CHAMBER IN WHICH WORKING FLUID IS COMPRESSED BY RECIPROCABLE OF THE PISTON, A BEARING SURFACE BEING PROVIDED IN THE CYLINDER MEANS FOR SUPPORT AND GUIDING ENGAGEMENT OF SAID PISTON ROD, SAID BEARING SURFACE HAVING A LONGITUDINALLY ENLARGED LUBRICANT-CONTAINING RECESS, MEANS FOR APPLYING PRESSURE TO THE LUBRICANT IN SAID RECESS PROPORTIONAL TO THE PRESSURE APPLIED TO THE WORKING FLUID DURING COMPRESSION OF THE LATTER, AND PASSAGE MEANS AFFORDING
Claim 2
Dependent Claim
99 words
A COMBINATION COMPRISING CYLINDER MEANS, PISTON MEANS COMPRISING A PISTON AND A PISTON ROD CONNECTED THERETO RECIPROCABLE WITHIN SAID CYLINDER, WITH A PORTION OF SAID PISTON AND SAID CYLINDER MEANS DEFINING A CHAMBER IN WHICH WORKING FLUID IS COMPRESSED BY RECIPROCABLE OF THE PISTON, A BEARING SURFACE BEING PROVIDED IN THE CYLINDER MEANS FOR SUPPORT AND GUIDING ENGAGEMENT OF SAID PISTON ROD, SAID BEARING SURFACE HAVING A LONGITUDINALLY ENLARGED LUBRICANT-CONTAINING RECESS, MEANS FOR APPLYING PRESSURE TO THE LUBRICANT IN SAID RECESS PROPORTIONAL TO THE PRESSURE APPLIED TO THE WORKING FLUID DURING COMPRESSION OF THE LATTER, AND PASSAGE MEANS AFFORDING
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) | 1968-01-12 | 1968-07-13 | 1969-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-12 | 1972-07-13 | 1973-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-12 | 1976-07-13 | 1977-01-12 | $7700.00 | Window Closed / Lapsed |