Patent US3556298A successfully refreshed from Google Patents.
US3556298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
V-shaped filter element bypass means
Assignee: Individual
•
Filing: 1969-07-23
•
Granted: 1971-01-19
•
Expires: 1989-07-23
Abstract
Abstract A strainer for removing solids from a flowing fluid comprising a V- or zigzag-shaped elongated screen disposed in an elongated cylindrical chamber and adapted to yield under high fluid pressures.
Inventors
- 👤 Werner P E Huebner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:16
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/01; B01D29/016; B01D29/88; B01D29/94; B01D29/96; B01D35/00; B01D35/02; B01D35/14; B01D35/147
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
180 words
A strainer for the removal of solid particles in a flowing fluid comprising a casing having a chamber with a generally cylindrical inner wall and a wall at each end of the cylindrical wall, a pair of passages in the cylindrical wall, and a screen having a V-section with the included angle less than 90* positioned within the chamber intermediate said passages having faces defining a first and second compartment, each passage communicating with one of said compartments, the screen having terminal edges abutting the end walls of the chamber and side edges contiguous with and abutting the cylindrical wall, each side edge adapted to be urged away from the cylindrical wall when the pressure acting on the side of the screen defining the first compartment exceeds by a predetermined amount the pressure acting on the side defining the second compartment and to be urged into abutment with the cylindrical wall when the flow pressure acting on the face of the screen defining the second compartment exceeds the pressure acting on the side of the screen defining the first compartment.
Claim 2
Dependent Claim
180 words
A strainer for the removal of solid particles in a flowing fluid comprising a casing having a chamber with a generally cylindrical inner wall and a wall at each end of the cylindrical wall, a pair of passages in the cylindrical wall, and a screen having a V-section with the included angle less than 90* positioned within the chamber intermediate said passages having faces defining a first and second compartment, each passage communicating with one of said compartments, the screen having terminal edges abutting the end walls of the chamber and side edges contiguous with and abutting the cylindrical wall, each side edge adapted to be urged away from the cylindrical wall when the pressure acting on the side of the screen defining the first compartment exceeds by a predetermined amount the pressure acting on the side defining the second compartment and to be urged into abutment with the cylindrical wall when the flow pressure acting on the face of the screen defining the second compartment exceeds the pressure acting on the side of the screen defining the first compartment.
Claim 3
Dependent Claim
22 words
A strainer as claimed in claim 1 wherein said screen has at least two limbs formed in the shape of a V.
Claim 4
Dependent Claim
14 words
A strainer as claimed in claim 1 in which said fluid is a liquid.
Claim 5
Dependent Claim
30 words
A strainer as claimed in claim 1 wherein a basket is fastened to said screen at one end thereof and is adapted to receive solid particles trapped by said screen.
Claim 6
Dependent Claim
14 words
A strainer as claimed in claim 4 in which said fluid is a liquid.
Claim 7
Dependent Claim
167 words
A strainer for the removal of solid particles from a flowing liquid comprising a casing having a chamber with a generally cylindrical inner wall and a wall at each end of the cylindrical wall, a pair of passages in the cylindrical wall, and a screen having a V-section with the included angle less than 90* positioned within the chamber intermediate said passages having faces defining a first and second compartment, each passage communicating with one of said compartments, the screen having terminal edges abutting the end walls of the chamber and side edges contiguous with and abutting the cylindrical wall, the apex of the screen beIng disposed to face upstream such that each side edge remains in abutment with the cylindrical wall until the flow pressure acting on the face of the screen defining the first compartment exceeds the pressure acting on the face of the screen defining the second compartment by a predetermined amount whereby the screen side edges are urged away from the cylindrical wall.
Claim 8
Dependent Claim
167 words
A strainer for the removal of solid particles from a flowing liquid comprising a casing having a chamber with a generally cylindrical inner wall and a wall at each end of the cylindrical wall, a pair of passages in the cylindrical wall, and a screen having a V-section with the included angle less than 90* positioned within the chamber intermediate said passages having faces defining a first and second compartment, each passage communicating with one of said compartments, the screen having terminal edges abutting the end walls of the chamber and side edges contiguous with and abutting the cylindrical wall, the apex of the screen beIng disposed to face upstream such that each side edge remains in abutment with the cylindrical wall until the flow pressure acting on the face of the screen defining the first compartment exceeds the pressure acting on the face of the screen defining the second compartment by a predetermined amount whereby the screen side edges are urged away from the cylindrical wall.
Claim 9
Dependent Claim
110 words
A strainer as claimed in claim 6 in which said screen has a zigzag cross section adapted to be positioned in said chamber in tight-fitting relation such that the sides of the screen yieldingly abut the sidewall and the ends of the screen abut the closure means whereby the chamber is divided into a pair of compartments, inlet and outlet passages formed in the sidewall so disposed that the inlet is in communication with one compartment and the outlet is in communication with the other compartment, a basket formed at one end of the screen for receiving solids, and a reinforcing crosspiece formed at the other end of the screen.
References Cited (Backward Citations)
US2151538A
Cited
US3190057A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |