US3097609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rag guard for positive displacement pumps
Assignee: Clow Corp
•
Filing: 1959-10-23
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Granted: 1963-07-16
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Expires: 1979-10-23
Abstract
No abstract record available.
Inventors
- 👤 Leonard M Nechine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:31
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/10; F04C2/107; F04C2/1071; F04C2/1073; F04C13/00; F04C13/001; F04C13/002; F16; F16D; F16D3/00; F16D3/16; F16D3/26; F16D3/84
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
IN COMBINATION WITH A PUMP HAVING A HOUSING FORMING A SUCTION CHAMBER, A DRIVE SHAFT HAVING ONE END POSITIONED IN SAID SUCTION CHAMBER, AND A ROTOR HAVING ONE END SECURED TO SAID ONE END OF SAID DRIVE SHAFT, A FLEXIBLE TUBULAR RAG GUARD ENCLOSING THE CONNECTION BETWEEN SAID ROTOR AND SAID DRIVE SHAFT, SAID RAG GUARD HAVING APERTURES PROVIDING PASSAGEWAYS FOR LIQUID FROM SAID SUCTION CHAMBER TO THE SPACE ENCLOSED BY SAID RAG GUARD TO EQUALIZE THE PRESSURE WITHIN SAID RAG GUARD AND SAID SUCTION CHAMBER, SAID APERTURES BEING TOO SMALL TO ADMIT RAGS INTO THE SPACE ENCLOSED BY SAID RAG GUARD, ONE END OF SAID RAG GUARD SLIDABLY ENGAGING THE CONNECTION BETWEEN SAID ROTOR AND SAID DRIVE SHAFT, AND THE OTHER END OF SAID RAG GUARD BEING FIXED RELATIVE TO SAID HOUSING.
Claim 2
Dependent Claim
133 words
IN COMBINATION WITH A PUMP HAVING A HOUSING FORMING A SUCTION CHAMBER, A DRIVE SHAFT HAVING ONE END POSITIONED IN SAID SUCTION CHAMBER, AND A ROTOR HAVING ONE END SECURED TO SAID ONE END OF SAID DRIVE SHAFT, A FLEXIBLE TUBULAR RAG GUARD ENCLOSING THE CONNECTION BETWEEN SAID ROTOR AND SAID DRIVE SHAFT, SAID RAG GUARD HAVING APERTURES PROVIDING PASSAGEWAYS FOR LIQUID FROM SAID SUCTION CHAMBER TO THE SPACE ENCLOSED BY SAID RAG GUARD TO EQUALIZE THE PRESSURE WITHIN SAID RAG GUARD AND SAID SUCTION CHAMBER, SAID APERTURES BEING TOO SMALL TO ADMIT RAGS INTO THE SPACE ENCLOSED BY SAID RAG GUARD, ONE END OF SAID RAG GUARD SLIDABLY ENGAGING THE CONNECTION BETWEEN SAID ROTOR AND SAID DRIVE SHAFT, AND THE OTHER END OF SAID RAG GUARD BEING FIXED RELATIVE TO SAID HOUSING.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-15 | 1967-01-14 | 1967-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-15 | 1971-01-14 | 1971-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-15 | 1975-01-14 | 1975-07-16 | $7700.00 | Window Closed / Lapsed |