US3598237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter
Assignee: Vickers Inc
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Filing: 1969-09-05
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Granted: 1971-08-10
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Expires: 1989-09-05
Abstract
Abstract A filter including a cylindrical filter element which is arranged to normally have fluid pass therethrough. A bypass valve is provided to bypass fluid directly to the outlet when the pressure at the inlet becomes excessive. A magnetized helical coil is provided adjacent the filter element to attract metal particles.
Inventors
- 👤 Ronald A Aspinwall
- 👤 Mackellar K Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:25
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/21; B01D29/60; B01D29/605; B01D29/88; B01D29/92; B01D35/00; B01D35/06; B01D35/14; B01D35/143; B01D35/147
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
148 words
A filter comprising a housing, a filter element in said housing, said housing having an inlet extending to one side of said filter element and an outlet extending to the other side of said filter element, means on said housing closing one end of said filter element, and a movable bypass valve closing the other end of said filter element, means communicating between the inlet side of said housing and said valve to cause movement of said valve when the pressure exceeds a predetermined value, and a magnetized wire element surrounding said filter element in spaced relation thereto, said wire element comprising a helical coil spring, said helical coil spring being magnetized in alternating north and south poles along its length, said filter including a spring urging said bypass valve to a closed position, said last-mentioned spring being magnetized in alternating north and south poles along its length.
Claim 2
Dependent Claim
148 words
A filter comprising a housing, a filter element in said housing, said housing having an inlet extending to one side of said filter element and an outlet extending to the other side of said filter element, means on said housing closing one end of said filter element, and a movable bypass valve closing the other end of said filter element, means communicating between the inlet side of said housing and said valve to cause movement of said valve when the pressure exceeds a predetermined value, and a magnetized wire element surrounding said filter element in spaced relation thereto, said wire element comprising a helical coil spring, said helical coil spring being magnetized in alternating north and south poles along its length, said filter including a spring urging said bypass valve to a closed position, said last-mentioned spring being magnetized in alternating north and south poles along its length.
Claim 3
Dependent Claim
127 words
A filter comprising a housing, a filter element in said housing, said housing having an inlet extending to one side of said filter element and an outlet extending to the other side of said filter element, means on said housing closing one end of said filter element, and bypass valve means closing the other end of said filter element, means communicating between the inlet side of said housing and said valve means to cause relative movement of said valve and said filter when the pressure exceeds a predetermined value, and a sinuous magnetized wire element interposed between opposed portions of said housing and surrounding said filter element in spaced relation thereto, said sinuous magnetized wire element being magnetized in alternating north and south poles along its length.
Claim 4
Dependent Claim
127 words
A filter comprising a housing, a filter element in said housing, said housing having an inlet extending to one side of said filter element and an outlet extending to the other side of said filter element, means on said housing closing one end of said filter element, and bypass valve means closing the other end of said filter element, means communicating between the inlet side of said housing and said valve means to cause relative movement of said valve and said filter when the pressure exceeds a predetermined value, and a sinuous magnetized wire element interposed between opposed portions of said housing and surrounding said filter element in spaced relation thereto, said sinuous magnetized wire element being magnetized in alternating north and south poles along its length.
Claim 5
Dependent Claim
16 words
The combination set forth in claim 2 wherein said wire element comprises a helical coil spring.
Claim 6
Dependent Claim
36 words
The combination set forth in claim 2 wherein said filter includes a spring urging said bypass valve means to a closed position, said last-mentioned spring being magnetized in alternating north and south poles along its length.
Claim 7
Dependent Claim
17 words
The combination set forth in claim 2 wherein said magnetizing wire element comprises a strongly magnetic material.
Claim 8
Dependent Claim
13 words
The combination set forth in claim 5 wherein said material comprises Cunife I.
Claim 9
Dependent Claim
28 words
The combination set forth in claim 2 wherein said magnetized wire element comprises a wire element including generally vertical legs connected by loops in a generally cylindrical configuration.
Claim 10
Dependent Claim
119 words
A filter comprising a housing, a filter element in said housing, said housing having an inlet extending to one side of said filter element and an outlet extending to the other side of said filter element, means on said housing closing one end of said filter element, and bypass valve means closing the other end of said filter element, means communicating between the inlet side of said housing and said valve means to cause relative movement of said valve and said filter when the pressure exceeds a predetermined value, and a helical magnetized wire element surrounding said filter element in spaced relation thereto, said helical magnetized wire element being magnetized in alternating north and south poles along its length.
Claim 11
Dependent Claim
119 words
A filter comprising a housing, a filter element in said housing, said housing having an inlet extending to one side of said filter element and an outlet extending to the other side of said filter element, means on said housing closing one end of said filter element, and bypass valve means closing the other end of said filter element, means communicating between the inlet side of said housing and said valve means to cause relative movement of said valve and said filter when the pressure exceeds a predetermined value, and a helical magnetized wire element surrounding said filter element in spaced relation thereto, said helical magnetized wire element being magnetized in alternating north and south poles along its length.
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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |