Patent US3331512A successfully refreshed from Google Patents.
US3331512A
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Assignee: Improved Machinery Inc
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Filing: 1965-06-01
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Granted: 1967-07-18
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Expires: 1985-06-01
Abstract
No abstract record available.
Inventors
- 👤 Herbert G Vore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:01
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/15; B01D33/21; B01D33/23; B01D33/44; B01D33/46; B01D33/463
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A FILTER COMPRISING: A FILTER BASE HAVING A FILTER FACE ADAPTED TO SUPPORT A FILTER SCREEN AND AT LEAST ONE PASSAGE FOR CONVEYING FLUID FROM SAID FILTER FACE; AND A WOVEN FILTER SCREEN FORMED FROM INTERMSEHED WIRES COVERING SAID FILTER FACE AND OUTLINING OPENINGS THEREBETWEEN, SAID SCREEN BEING SECURED ALONG ITS EDGES TO SAID FILTER BASE; SAID SCREEN CONTAINING A PLURALITY OF PARALLEL CORRUGATIONS, THE WIDTH OF EACH OF SAID CORRUGATIONS EXTENDING OVER A PLURALITY OF SAID OPENINGS, SAID CORRUGATIONS ALLOWING SAID SCREEN TO EXPAND AND CONTACT WITH THE EXPANSION AND CONTRACTION OF SAID FILTER BASE TO PREVENT THE SCREEN FROM DEVELOPING UNDULY HIGH TENSILE STRESSES.
Claim 2
Dependent Claim
106 words
A FILTER COMPRISING: A FILTER BASE HAVING A FILTER FACE ADAPTED TO SUPPORT A FILTER SCREEN AND AT LEAST ONE PASSAGE FOR CONVEYING FLUID FROM SAID FILTER FACE; AND A WOVEN FILTER SCREEN FORMED FROM INTERMSEHED WIRES COVERING SAID FILTER FACE AND OUTLINING OPENINGS THEREBETWEEN, SAID SCREEN BEING SECURED ALONG ITS EDGES TO SAID FILTER BASE; SAID SCREEN CONTAINING A PLURALITY OF PARALLEL CORRUGATIONS, THE WIDTH OF EACH OF SAID CORRUGATIONS EXTENDING OVER A PLURALITY OF SAID OPENINGS, SAID CORRUGATIONS ALLOWING SAID SCREEN TO EXPAND AND CONTACT WITH THE EXPANSION AND CONTRACTION OF SAID FILTER BASE TO PREVENT THE SCREEN FROM DEVELOPING UNDULY HIGH TENSILE STRESSES.
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) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |