US3970566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid filtering device
Assignee: Individual
•
Filing: 1974-11-20
•
Granted: 1976-07-20
•
Expires: 1994-11-20
Abstract
Abstract A fluid filtering device utilizing a standard or conventional tee connector and a standard or conventional pipe as the housing. A filter assembly is threadably received in one end of the tee connector and carries a filter element which extends into the pipe.
Inventors
- 👤 Borje O. Rosaen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:09
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
248 words
In combination with a conventional tee fitting, said tee fitting having internally threaded openings at each end and an internally threaded side opening intermediate said end openings, a first conventional pipe having an externally threaded end received by one of said end openings, a second conventional pipe having an externally threaded end received by said side opening, a filter device to be mounted in said conventional tee fitting comprising a cap member adapted to be mounted to the free end opening of said tee fitting, a perforated, tubular member secured at one end to said cap member so that said tubular member extends axially through said tee fitting, and across said side opening so that the free end of said tubular member is positioned on the opposite transverse side of said side opening from the cap member, a hollow filter element secured to the free end of said perforated tubular member below said side opening wherein said filter element is in axial alignment with said tubular member so that said filter element extends axially into said first pipe and wherein said filter element is spaced radially inward from said first pipe, so that fluid flows from the exterior of said filter element to the interior of said filter element, up through said perforated tubular member and into said tee fitting, whereby said filter element is removed from said first pipe through said tee fitting in unison with the removal of said cap member and said perforated, tubular member.
Claim 2
Dependent Claim
248 words
In combination with a conventional tee fitting, said tee fitting having internally threaded openings at each end and an internally threaded side opening intermediate said end openings, a first conventional pipe having an externally threaded end received by one of said end openings, a second conventional pipe having an externally threaded end received by said side opening, a filter device to be mounted in said conventional tee fitting comprising a cap member adapted to be mounted to the free end opening of said tee fitting, a perforated, tubular member secured at one end to said cap member so that said tubular member extends axially through said tee fitting, and across said side opening so that the free end of said tubular member is positioned on the opposite transverse side of said side opening from the cap member, a hollow filter element secured to the free end of said perforated tubular member below said side opening wherein said filter element is in axial alignment with said tubular member so that said filter element extends axially into said first pipe and wherein said filter element is spaced radially inward from said first pipe, so that fluid flows from the exterior of said filter element to the interior of said filter element, up through said perforated tubular member and into said tee fitting, whereby said filter element is removed from said first pipe through said tee fitting in unison with the removal of said cap member and said perforated, tubular member.
Claim 3
Dependent Claim
66 words
The combination as defined in claim 1, and including a circular flange member carried by said tubular member and engaging the inner wall of said first pipe at a point intermediate the filter element and said side opening of said tee fitting and sealing means around the outer periphery of said flange member for providing a sealing engagement between said flange member and said first pipe.
Claim 4
Dependent Claim
66 words
The combination as defined in claim 1, and including a circular flange member carried by said tubular member and engaging the inner wall of said tee fitting at a point intermediate the filter element and said side opening of said tee fitting and sealing means around the outer periphery of said flange member for providing a sealing engagement between said flange member and said tee fitting.
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) | 1979-07-20 | 1980-01-19 | 1980-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-20 | 1984-01-19 | 1984-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-20 | 1988-01-19 | 1988-07-20 | $7700.00 | Window Closed / Lapsed |