US3227281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter medium
Assignee: Peterson Filters and Engineering Co
•
Filing: 1961-11-06
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Granted: 1966-01-04
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Expires: 1981-11-06
Abstract
No abstract record available.
Inventors
- 👤 Peterson C Lynn
- 👤 John G Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:44
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/06; B01D33/044; B01D33/048; B01D33/80; B01D33/82
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A FILTER MEDIUM FOR A CONTINUOUS FILTER MEDIUM REMOVAL-TYPE ROTARY DRUM FILTER COMPRISING A PLURALITY OF ESSENTIALLY ELONGATED RECTANGULAR PANELS OF FILTER MEDIUM, EACH HAVING AT LEAST ONE OF THE WOOF AND WARP AT AN ANGLE TO THE EDGE THEREOF, SAID PANELS BEING SEWN TOGETHER IN EDGEWISE RELATION, AT LEAST ONE OF THE WOOF AND WARP IN ADJACENT PANELS BEING DIRECTED OPPOSITELY FROM THE CENTRAL INTERCONNECTING JOINT THEREBETWEEN, AND MEANS FOR RELEASABLY SECURING THE ENDS OF THE FILTER MEDIUM TOGETHER WHEREBY TO FORM AN ENDLESS LOOP.
Claim 2
Dependent Claim
86 words
A FILTER MEDIUM FOR A CONTINUOUS FILTER MEDIUM REMOVAL-TYPE ROTARY DRUM FILTER COMPRISING A PLURALITY OF ESSENTIALLY ELONGATED RECTANGULAR PANELS OF FILTER MEDIUM, EACH HAVING AT LEAST ONE OF THE WOOF AND WARP AT AN ANGLE TO THE EDGE THEREOF, SAID PANELS BEING SEWN TOGETHER IN EDGEWISE RELATION, AT LEAST ONE OF THE WOOF AND WARP IN ADJACENT PANELS BEING DIRECTED OPPOSITELY FROM THE CENTRAL INTERCONNECTING JOINT THEREBETWEEN, AND MEANS FOR RELEASABLY SECURING THE ENDS OF THE FILTER MEDIUM TOGETHER WHEREBY TO FORM AN ENDLESS LOOP.
References Cited (Backward Citations)
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Cited
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US2812064A
Cited
US2916767A
Cited
US2846051A
Cited
US3012301A
Cited
US3120492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |