US3175342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter dryer unit for cleaning sealed refrigerating systems after motor burn outs
Assignee: Parker Hannifin Corp
•
Filing: 1963-01-16
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Granted: 1965-03-30
•
Expires: 1983-01-16
Abstract
No abstract record available.
Inventors
- 👤 Balogh Stephen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:11
CPC Classifications
F; F25; F25B; F25B43/00; F25B43/003; F25B2400/00; F25B2400/04; F25B2400/0413
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A COMBINED FILTER, DRYER AND ACID ABSORBED UNIT, COMPRISING: AN ELONGATEED TUBULAR CASING HAVING INLET AND OUTLET FIXTURES ADJACENT OPPOSITE ENDS THEREOF, A POROUS FILTER BLOCK SPANNING SAID CASING ADJACENT ONE END THEREOF, A MASS OF LOOSE FILL MOISTURE AND ACID ABSORBING MATERIAL IN THE OTHER END OF SAID CASING, A PAIR OF PERFORATE DISC MEMBERS ENGAGING OPPOSITE ENDS OF SAID MASS OF MATERIAL TO PREVENT AXIAL DISPLACEMENT OF SAID MATERIAL BY AXIAL FLOW OF REFRIGERANT THROUGH SAID UNIT, AND A COIL SPRING COMPRESSED BETWEEN AN END OF SAID FILTER BLOCK AND THE ADJACENT DISC MEMBER.
Claim 2
Dependent Claim
96 words
A COMBINED FILTER, DRYER AND ACID ABSORBED UNIT, COMPRISING: AN ELONGATEED TUBULAR CASING HAVING INLET AND OUTLET FIXTURES ADJACENT OPPOSITE ENDS THEREOF, A POROUS FILTER BLOCK SPANNING SAID CASING ADJACENT ONE END THEREOF, A MASS OF LOOSE FILL MOISTURE AND ACID ABSORBING MATERIAL IN THE OTHER END OF SAID CASING, A PAIR OF PERFORATE DISC MEMBERS ENGAGING OPPOSITE ENDS OF SAID MASS OF MATERIAL TO PREVENT AXIAL DISPLACEMENT OF SAID MATERIAL BY AXIAL FLOW OF REFRIGERANT THROUGH SAID UNIT, AND A COIL SPRING COMPRESSED BETWEEN AN END OF SAID FILTER BLOCK AND THE ADJACENT DISC MEMBER.
References Cited (Backward Citations)
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Cited
US2283989A
Cited
US2325657A
Cited
US2341430A
Cited
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Cited
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Cited
US2873856A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |