US3080973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shunt type filter
Assignee: Commercial Filters Corp
•
Filing: 1960-03-25
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Granted: 1963-03-12
•
Expires: 1980-03-25
Abstract
No abstract record available.
Inventors
- 👤 Robert N Burckhalter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:33
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/12; B01D27/00; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/50; B01D29/52; B01D35/14; B01D35/147; Y; Y10; Y10S; Y10S116/00; Y10S116/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
IN A SHUNT TYPE FILTER INCLUDING A CASING WITH A PARTITION INTERIORLY DIVIDING THE SAME INTO A FILTERING CHAMBER AND A FILTRATE CHAMBER WITH A PORT THROUGH THE PARTITION COVERED BY FILTER MEANS IN THE FILTERING CHAMBER, SAID CASING HAVING AN INLET PORT INTO EACH CHAMBER FROM A COMMON SOURCE OF FLUID AND A SINGLE OUTLET FROM THE FILTRATE CHAMBER, AN ANGLED OPEN PIPE IN THE FILTRATE CHAMBER WITH ONE END OPERATIVELY CONNECTED WITH THE INLET TO THIS CHAMBER, A BY-PASS VALVE IN THE PORTION OF SAID PIPE INWARDLY OF THE APEX OF THE ANGLE, A VALVE OPERATION INDICATING ROD SEPARATE FROM SAID VALUE WITH ONE END POSITIONED TO ABUTTINGLY CONTACT SAID VALVE AND THE OTHER END PROJECTING THROUGH THE CASING WALL, AND A CAP NUT ENCLOSING SAID PROJECTING END WHEREBY THE OPERATION OF SAID VALVE MAY BE CHECKED WITHOUT STOPPING OPERATION OF THE FILTER.
Claim 2
Dependent Claim
145 words
IN A SHUNT TYPE FILTER INCLUDING A CASING WITH A PARTITION INTERIORLY DIVIDING THE SAME INTO A FILTERING CHAMBER AND A FILTRATE CHAMBER WITH A PORT THROUGH THE PARTITION COVERED BY FILTER MEANS IN THE FILTERING CHAMBER, SAID CASING HAVING AN INLET PORT INTO EACH CHAMBER FROM A COMMON SOURCE OF FLUID AND A SINGLE OUTLET FROM THE FILTRATE CHAMBER, AN ANGLED OPEN PIPE IN THE FILTRATE CHAMBER WITH ONE END OPERATIVELY CONNECTED WITH THE INLET TO THIS CHAMBER, A BY-PASS VALVE IN THE PORTION OF SAID PIPE INWARDLY OF THE APEX OF THE ANGLE, A VALVE OPERATION INDICATING ROD SEPARATE FROM SAID VALUE WITH ONE END POSITIONED TO ABUTTINGLY CONTACT SAID VALVE AND THE OTHER END PROJECTING THROUGH THE CASING WALL, AND A CAP NUT ENCLOSING SAID PROJECTING END WHEREBY THE OPERATION OF SAID VALVE MAY BE CHECKED WITHOUT STOPPING OPERATION OF THE FILTER.
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) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |