US3273715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid filters
Assignee: —
•
Filing: 1962-04-27
•
Granted: 1966-09-20
•
Expires: 1982-04-27
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:56
CPC Classifications
F; F15; F15B; F15B21/00; F15B21/04; F15B21/041; B; B01; B01D; B01D35/00; B01D35/14; B01D35/143; B01D35/147; B01D35/153
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A FLUID FILTER FOR MOUNTING IN ASSOCIATION WITH A FLUID RESERVOIR OF A HYDRAULIC SYSTEM COMPRISING A HOUSING, TWO OPENINGS FORMED THROUGH THE WALL OF SAID HOUSING, ONE AN INLET AND THE OTHER AN OUTLET FOR THE FLUID OF THE SYSTEM, ONE OF SAID OPENINGS ADAPTED TO BE OPEN TO THE FLUID OF SAID RESERVOIR AND THE OTHER OPENING ADAPTED TO BE CONNECTED TO A CONDUIT IN SAID SYSTEM, A FILTER CARTRIDGE CHAMBER IN SAID HOUSING, AN AXIALLY MOVABLE FILTER CARTRIDGE MOUNTED WITHIN SAID CHAMBER, GUIDE MEANS CARRIED BY SAID HOUSING FOR SUPPORTING SAID CARTRIDGE FOR AXIAL MOVEMENT IN SAID HOUSING WHENEVER THE PRESSURE DIFFERENTIAL ACROSS THE CAR-
Claim 2
Dependent Claim
108 words
A FLUID FILTER FOR MOUNTING IN ASSOCIATION WITH A FLUID RESERVOIR OF A HYDRAULIC SYSTEM COMPRISING A HOUSING, TWO OPENINGS FORMED THROUGH THE WALL OF SAID HOUSING, ONE AN INLET AND THE OTHER AN OUTLET FOR THE FLUID OF THE SYSTEM, ONE OF SAID OPENINGS ADAPTED TO BE OPEN TO THE FLUID OF SAID RESERVOIR AND THE OTHER OPENING ADAPTED TO BE CONNECTED TO A CONDUIT IN SAID SYSTEM, A FILTER CARTRIDGE CHAMBER IN SAID HOUSING, AN AXIALLY MOVABLE FILTER CARTRIDGE MOUNTED WITHIN SAID CHAMBER, GUIDE MEANS CARRIED BY SAID HOUSING FOR SUPPORTING SAID CARTRIDGE FOR AXIAL MOVEMENT IN SAID HOUSING WHENEVER THE PRESSURE DIFFERENTIAL ACROSS THE CAR-
References Cited (Backward Citations)
US2524336A
Cited
US2544244A
Cited
US2503566A
Cited
US3076336A
Cited
US3040894A
Cited
US3056379A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |