US3240338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter apparatus
Assignee: Individual
•
Filing: 1961-08-30
•
Granted: 1966-03-15
•
Expires: 1981-08-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Henry Schmidt
- 👤 Earl A Borre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:26
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/39; B01D29/60; B01D29/603; B01D29/62; B01D29/70; B01D29/72; B01D29/88; B01D29/90; B01D29/96; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86879; Y10T137/86895
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A PRESSURE FILTER OF THE TUPE INCLUDING A PLURALITY OF FILTER LEAVES MOUNTED IN SPACED FACE-TO-FACE RELATION THEREIN, A SLUICING MECHANISM COMPRISING A PLURALITY OF OSCILLATING APERTURE TUBULAR MEMBERS RESPECTIVELY DISPOSED BETWEEN SAID LEAVES FOR DIRECTING A SLUICING FLUID THEREON TO REMOVE FILTER CAKES FROM SAID LEAVES, ROLLER MEANS MOUNTED ON SAID TUBULAR MEMBERS, AND CHANNEL MEANS COMPLEMEN-
Claim 2
Dependent Claim
58 words
A PRESSURE FILTER OF THE TUPE INCLUDING A PLURALITY OF FILTER LEAVES MOUNTED IN SPACED FACE-TO-FACE RELATION THEREIN, A SLUICING MECHANISM COMPRISING A PLURALITY OF OSCILLATING APERTURE TUBULAR MEMBERS RESPECTIVELY DISPOSED BETWEEN SAID LEAVES FOR DIRECTING A SLUICING FLUID THEREON TO REMOVE FILTER CAKES FROM SAID LEAVES, ROLLER MEANS MOUNTED ON SAID TUBULAR MEMBERS, AND CHANNEL MEANS COMPLEMEN-
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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) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |