US3353492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating pump
Assignee: Robert Bosch GmbH
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Filing: 1966-01-25
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Granted: 1967-11-21
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Expires: 1986-01-25
Abstract
No abstract record available.
Inventors
- 👤 Heinzelmann Josef
- 👤 Hugendubel Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:29
CPC Classifications
F; F16; F16N; F16N13/00; F16N13/22; F16N13/02; F16N13/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
A LUBRICATING PUMP, COMPRISING A HOUSING DEFINING A SUPPLY CHAMBER AND HAVING A PASSAGE THEREIN, A ROTARY PISTON RECIPROCABLY RECEIVED IN SAID PASSAGE AND HAVING A BLIND BORE AND DEFINING WITH SAID HOUSING A FIRST WORKING CHAMBER AT THE OPEN END OF SAID BORE; A PLUNGER SEALINGLY TELESCOPED INTO SAID BORE AND DEFINING WITH SAID PISTON A SECOND WORKING CHAMBER AT THE CLOSED END OF SAID BORE, SAID PISTON FURTHER HAVING PORT MEANS FOR ENTRY OF LUBRICANT FROM SAID SUPPLY CHAMBER INTO SAID WORKING CHAMBERS IN FIRST ANGULAR POSITIONS OF THE PISTON AND SAID HOUSING FURTHER HAVING AT LEAST TWO OUTLET MEANS RESPECTIVELY COMMUNICATING THROUGH SAID PORT MEANS WITH SAID WORKING CHAMBERS IN SECOND ANGULAR POSITIONS OF SAID PISTON; AND MEANS FOR ROTATING SAID PISTON IN ONE DIRECTION WITH REFERENCE TO SAID HOUSING AND FOR RECIPROCATING THE PISTON WITH REFERENCE TO SAID PLUNGER SO THAT THE PISTON PERFORMS ALTERNATING SUCTION AND INJECTION STROKES TO DRAW LUBRICANT FROM SAID SUPPLY CHAMBER INTO SAID WORKING CHAMBES IN SAID FIRST ANGULAR POSITIONS AND TO EXPEL LUBRICANT FROM SAID WORKING CHAMBERS THROUGH SAID OUTLET MEANS IN SAID SECOND ANGULAR POSITIONS THEREOF.
Claim 2
Dependent Claim
187 words
A LUBRICATING PUMP, COMPRISING A HOUSING DEFINING A SUPPLY CHAMBER AND HAVING A PASSAGE THEREIN, A ROTARY PISTON RECIPROCABLY RECEIVED IN SAID PASSAGE AND HAVING A BLIND BORE AND DEFINING WITH SAID HOUSING A FIRST WORKING CHAMBER AT THE OPEN END OF SAID BORE; A PLUNGER SEALINGLY TELESCOPED INTO SAID BORE AND DEFINING WITH SAID PISTON A SECOND WORKING CHAMBER AT THE CLOSED END OF SAID BORE, SAID PISTON FURTHER HAVING PORT MEANS FOR ENTRY OF LUBRICANT FROM SAID SUPPLY CHAMBER INTO SAID WORKING CHAMBERS IN FIRST ANGULAR POSITIONS OF THE PISTON AND SAID HOUSING FURTHER HAVING AT LEAST TWO OUTLET MEANS RESPECTIVELY COMMUNICATING THROUGH SAID PORT MEANS WITH SAID WORKING CHAMBERS IN SECOND ANGULAR POSITIONS OF SAID PISTON; AND MEANS FOR ROTATING SAID PISTON IN ONE DIRECTION WITH REFERENCE TO SAID HOUSING AND FOR RECIPROCATING THE PISTON WITH REFERENCE TO SAID PLUNGER SO THAT THE PISTON PERFORMS ALTERNATING SUCTION AND INJECTION STROKES TO DRAW LUBRICANT FROM SAID SUPPLY CHAMBER INTO SAID WORKING CHAMBES IN SAID FIRST ANGULAR POSITIONS AND TO EXPEL LUBRICANT FROM SAID WORKING CHAMBERS THROUGH SAID OUTLET MEANS IN SAID SECOND ANGULAR POSITIONS THEREOF.
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) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |