US3789990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Strainer for liquid pipe lines
Assignee: Individual
•
Filing: 1971-11-10
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Granted: 1974-02-05
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Expires: 1991-11-10
Abstract
Abstract The invention relates to a strainer for fluid pipe lines containing a filter element coaxial with the pipe line and a fluid deflector. The latter causes the incoming fluid first to flow around the filter element in a direction substantially parallel to its axis and thereafter to flow perpendicular through it and out of its downstream end. The filter element is constituted by a plurality of juxtaposed grooved washers.
Inventors
- 👤 M Drori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:15
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/02; B01D29/00; B01D29/11; B01D29/114; B01D29/62; B01D29/66; B01D35/22; B01D46/00; B01D46/0002; B01D46/0012; B01D46/0027; B01D46/003; B01D46/0031; B01D46/24; B01D50/00; B01D50/20; B01D2265/00; B01D2265/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
211 words
A strainer connectable between two fluid pipes, comprising: an inner rigid supporting body; pipe connecting means fixed to said inner body at both ends for connecting same to the two fluid pipes; a filter supported around said inner body; an outer tubular housing removably supported around said inner body and radially spaced therefrom and the filter supported thereby, to define an outer axial passageway between the external face of the filter and the internal face of the housing; said inner supporting body being formed with an inner axial passageway, and being further formed with a radial passageway in the portion thereof occupied by said filter, the radial passageway effecting communication between said outer and inner axial passageways via said filter; and a deflector closing the inner axial passageway of the inner supporting body at one end and forcing the fluid to flow from the upstream pipe serially through one axial passageway, the fiLter, the radial passageway, and the other axial passageway before reaching the downstream pipe; said inner rigid supporting body and said pipe connecting means carried at the opposite ends thereof effecting a rigid mechanical connection between said two pipes independently of said housing whereby the housing may be removed to enable cleaning the filter without disconnecting the two pipes.
Claim 2
Dependent Claim
211 words
A strainer connectable between two fluid pipes, comprising: an inner rigid supporting body; pipe connecting means fixed to said inner body at both ends for connecting same to the two fluid pipes; a filter supported around said inner body; an outer tubular housing removably supported around said inner body and radially spaced therefrom and the filter supported thereby, to define an outer axial passageway between the external face of the filter and the internal face of the housing; said inner supporting body being formed with an inner axial passageway, and being further formed with a radial passageway in the portion thereof occupied by said filter, the radial passageway effecting communication between said outer and inner axial passageways via said filter; and a deflector closing the inner axial passageway of the inner supporting body at one end and forcing the fluid to flow from the upstream pipe serially through one axial passageway, the fiLter, the radial passageway, and the other axial passageway before reaching the downstream pipe; said inner rigid supporting body and said pipe connecting means carried at the opposite ends thereof effecting a rigid mechanical connection between said two pipes independently of said housing whereby the housing may be removed to enable cleaning the filter without disconnecting the two pipes.
Claim 3
Dependent Claim
57 words
A strainer as defined in claim 1, wherein the upstream end of the inner rigid supporting body includes an annular ring of larger diameter than the remainder of the supporting body and fixed thereto by a plurality of angularly-spaced, radially-extending ribs, the space between said ribs providing communication from the upstream pipe to said outer axial passageway.
Claim 4
Dependent Claim
52 words
A strainer as defined in claim 2, wherein said deflector comprises a cone-shaped member threadedly received in the up-stream end of the inner rigid supporting body closing said end thereof and thereby directing the fluid to flow from the upstream pipe through the space between the ribs to the outer axial passageway.
Claim 5
Dependent Claim
51 words
A strainer as defined in claim 1, wherein one end of said outer tubular housing is threadely received on one end of the inner rigid supporting body, the opposite end of the housing being unattached to the opposite end of the body but sealed with respect thereto by a sealing ring.
Claim 6
Dependent Claim
37 words
A strainer as defined in claim 1, wherein said inner rigid supporting body includes annular end portions at each end integrally joined with an intermediate portion, the latter being formed with a plurality of said radial passageways.
Claim 7
Dependent Claim
39 words
A strainer as defined in claim 5, wherein said intermediate portion of the inner rigid supporting body includes a plurality of axially extending ribs angularly spaced from each other, the spaces between said latter ribs defining said radial passageways.
Claim 8
Dependent Claim
24 words
A strainer as defined in claim 1, wherein said filter comprises a plurality of grooved annular washers supported by said inner rigid supporting body.
Claim 9
Dependent Claim
57 words
A strainer as defined in claim 1, wherein said outer tubular housing includes a sump at the bottom thereof and extending parallel to the axis of the housing, said outer axial passageway communicating with said sump over substantially the complete length of said filter, the downstream end of the sump being closed by an axially movable cock.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |