Patent US985451A successfully refreshed from Google Patents.
Patent US3075615A successfully refreshed from Google Patents.
US3075615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubrication
Assignee: Auto Research Corp
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Filing: 1959-07-27
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Granted: 1963-01-29
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Expires: 1979-07-27
Abstract
No abstract record available.
Inventors
- 👤 Thomas R Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:32
CPC Classifications
F; F16; F16N; F16N27/00; Y; Y10; Y10S; Y10S116/00; Y10S116/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
191 words
IN A CENTRALIZED LUBRICATION INSTALLATION, A LUBRICANT METERING UNIT OF THE RECIPROCATING PISTON TYPE RECEIVING A STORED CHARGE OF LUBRICANT UPON APPLICATION OF A PRESSURE INPUT THROUGH AN INLET FROM A CENTRAL PRESSURE SOURCE, SAID UNIT COMPRISING A BODY WITH A BORE THERETHROUGH HAVING TWO END PORTIONS, A FIRST CLOSURE MEANS SEALING ONE END PORTION OF SAID BORE, A COAXIAL PISTON, VALVE AND PISTON FOLLOWER RECIPROCABLE IN SAID BORE, A SPRING ACTING IN SAID BORE BETWEEN SAID FIRST CLOSURE MEANS AND SAID PISTON FOLLOWER, SAID VALVE BEING SLIDABLE BETWEEN FIRST AND SECOND LIMITS DEFINED BY SAID PISTON AND SAID PISTON FOLLOWER RESPECTIVELY, A SECOND CLOSURE MEANS SEALING THE OTHER END PORTION OF SAID BORE, AN INLET CHAMBER DEFINED BY SAID SECOND CLOSURE MEANS AND SAID OTHER END PORTION OF SAID BORE, AN INLET COMMUNICATING WITH SAID INLET CHAMBER, A DISCHARGE CHAMBER DEFINED BY SAID FIRST CLOSURE MEANS AND SAID ONE END PORTION OF SAID BORE, AN OUTLET COMMUNICATING WITH SAID DISCHARGE CHAMBER, A BY-PASS HAVING A FIRST END COMMUNICATING WITH SAID INLET CHAMBER AND A SECOND END COMMUNICATING WITH SAID BORE, A PASSAGE IN SAID PISTON FOLLOWER HAVING A FIRST END
Claim 2
Dependent Claim
191 words
IN A CENTRALIZED LUBRICATION INSTALLATION, A LUBRICANT METERING UNIT OF THE RECIPROCATING PISTON TYPE RECEIVING A STORED CHARGE OF LUBRICANT UPON APPLICATION OF A PRESSURE INPUT THROUGH AN INLET FROM A CENTRAL PRESSURE SOURCE, SAID UNIT COMPRISING A BODY WITH A BORE THERETHROUGH HAVING TWO END PORTIONS, A FIRST CLOSURE MEANS SEALING ONE END PORTION OF SAID BORE, A COAXIAL PISTON, VALVE AND PISTON FOLLOWER RECIPROCABLE IN SAID BORE, A SPRING ACTING IN SAID BORE BETWEEN SAID FIRST CLOSURE MEANS AND SAID PISTON FOLLOWER, SAID VALVE BEING SLIDABLE BETWEEN FIRST AND SECOND LIMITS DEFINED BY SAID PISTON AND SAID PISTON FOLLOWER RESPECTIVELY, A SECOND CLOSURE MEANS SEALING THE OTHER END PORTION OF SAID BORE, AN INLET CHAMBER DEFINED BY SAID SECOND CLOSURE MEANS AND SAID OTHER END PORTION OF SAID BORE, AN INLET COMMUNICATING WITH SAID INLET CHAMBER, A DISCHARGE CHAMBER DEFINED BY SAID FIRST CLOSURE MEANS AND SAID ONE END PORTION OF SAID BORE, AN OUTLET COMMUNICATING WITH SAID DISCHARGE CHAMBER, A BY-PASS HAVING A FIRST END COMMUNICATING WITH SAID INLET CHAMBER AND A SECOND END COMMUNICATING WITH SAID BORE, A PASSAGE IN SAID PISTON FOLLOWER HAVING A FIRST END
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) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |