US3099547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pocket-type filters
Assignee: American Air Filter Co Inc
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Filing: 1960-09-19
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Granted: 1963-07-30
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Expires: 1980-09-19
Abstract
No abstract record available.
Inventors
- 👤 Willem J Hagendoorn
- 👤 Tom R Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:07
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/02; Y; Y10; Y10S; Y10S55/00; Y10S55/31
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A POCKET TYPE FLUID FILTER COMPRISING: A WEB OF FLEXIBLE FILTERING MATERIAL HAVING AT LEAST ONE FOOLD LINE DIVIDING SAID WEB INTO AT LEAST ONE PAIR OF PLEAT FORMING SECTIONS, SAID PLEAT FORMING SECTIONS OF SAID PAIR BEING FOLDED ABOUT SAID FOLD LINE TO FACE EACH OTHER AND FORM A PLEAT AND A PLURALITY OF SPACED DIVIDER MEMBERS, EACH OF SAID DIVIDER MEMBERS HAVING AT LEAST ONE SLIT SNUGLY ENGAGING SAID PLEAT TRANSVERSE SAID FOLD LINE TO HOLD SAID PLEAT FORMING SECTIONS IN FACING CONTACT ALONG SAID SLIT WHEREBY SAID DIVIDER MEMBERS DIVIDE SAID PLEAT INTO A PLURALITY OF SEPARATE POCKET MEMBERS.
Claim 2
Dependent Claim
102 words
A POCKET TYPE FLUID FILTER COMPRISING: A WEB OF FLEXIBLE FILTERING MATERIAL HAVING AT LEAST ONE FOOLD LINE DIVIDING SAID WEB INTO AT LEAST ONE PAIR OF PLEAT FORMING SECTIONS, SAID PLEAT FORMING SECTIONS OF SAID PAIR BEING FOLDED ABOUT SAID FOLD LINE TO FACE EACH OTHER AND FORM A PLEAT AND A PLURALITY OF SPACED DIVIDER MEMBERS, EACH OF SAID DIVIDER MEMBERS HAVING AT LEAST ONE SLIT SNUGLY ENGAGING SAID PLEAT TRANSVERSE SAID FOLD LINE TO HOLD SAID PLEAT FORMING SECTIONS IN FACING CONTACT ALONG SAID SLIT WHEREBY SAID DIVIDER MEMBERS DIVIDE SAID PLEAT INTO A PLURALITY OF SEPARATE POCKET MEMBERS.
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) | 1966-07-29 | 1967-01-28 | 1967-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-29 | 1971-01-28 | 1971-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-29 | 1975-01-28 | 1975-07-30 | $7700.00 | Window Closed / Lapsed |