Patent US1369924A successfully refreshed from Google Patents.
Patent US4397336A successfully refreshed from Google Patents.
US4397336A
Expired / Lapsed
US
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Control device for hydraulic spool valves
Assignee: KONTAK HYDRAULICS Ltd
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Filing: 1981-01-22
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Granted: 1983-08-09
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Expires: 2001-01-22
Abstract
Abstract There is described a control device for actuating a pair of hydraulic spool valves arranged, for example, side-by-side in a valve block. The device includes a two-arm actuating member such that when the actuating member is pivotted about the axis of one of the arms the other arm operates its associated valve and vice versa, the valves being operatively connected to its respective arm through a follower.
Inventors
- 👤 Philip D. Godfrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:32
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/04; F16K27/041; F16K11/00; F16K11/10; F16K11/14; F16K11/18; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87056; Y10T137/87072; Y10T74/00; Y10T74/20; Y10T74/20012; Y10T74/20018; Y10T74/20024; Y10T74/20201
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
230 words
A control device for hydraulic spool valves comprising a control lever mounted on a spherical pivot, an actuating member fixed to said lever and lying in a plane and passing through the center of the spherical pivot of said pivot, and said actuating lever having a first arm extending along a first axis in said plane and having a second arm extending along a second axis in said plane at right-angles to said first axis, said first and second arms surrounding the spherical pivot and at least a portion of said control lever first and second elongate followers for connecting said first and second arms to respective first and second spool valves, one end of said first follower being mounted at the free end of said first arm and extending in said plane in a direction parallel to said second arm, the other end of said first follower being connectible to the first spool valve to operate the first spool valve when the control lever is pivotted about said second axis, one end of said second follower being mounted at the free end of said second arm and extending in said plane in a direction parallel to said first arm, the other end of said second follower being connectible to the second spool valve to operate the second spool valve when the control lever is pivotted about said first axis.
Claim 2
Dependent Claim
230 words
A control device for hydraulic spool valves comprising a control lever mounted on a spherical pivot, an actuating member fixed to said lever and lying in a plane and passing through the center of the spherical pivot of said pivot, and said actuating lever having a first arm extending along a first axis in said plane and having a second arm extending along a second axis in said plane at right-angles to said first axis, said first and second arms surrounding the spherical pivot and at least a portion of said control lever first and second elongate followers for connecting said first and second arms to respective first and second spool valves, one end of said first follower being mounted at the free end of said first arm and extending in said plane in a direction parallel to said second arm, the other end of said first follower being connectible to the first spool valve to operate the first spool valve when the control lever is pivotted about said second axis, one end of said second follower being mounted at the free end of said second arm and extending in said plane in a direction parallel to said first arm, the other end of said second follower being connectible to the second spool valve to operate the second spool valve when the control lever is pivotted about said first axis.
Claim 3
Dependent Claim
23 words
A control device as claimed in claim 1, wherein said first and second arms are connected to their respective followers through ball joints.
Claim 4
Dependent Claim
21 words
A control device as claimed in claim 2, wherein the followers are fixable to flattened end portions of the spool valves.
Claim 5
Dependent Claim
69 words
A control device as claimed in claim 1, wherein each follower is in the form of a substantially L-shaped member, one arm of said L-shaped member being adapted to receive the ball joint of a respective arm of the actuating member and the other arm of said L-shaped member being provided with a projection arranged to co-operate with a recess provided in the other arm of the other follower.
Claim 6
Dependent Claim
290 words
A control device for hydraulic spool valves comprising a control lever mounted on a spherical pivot, an actuating member fixed to said lever and lying in a plane and passing through the center of the spherical pivot, of said pivot, said actuating lever having a first arm extending along a first axis in said plane and having a second arm extending along a second axis in said plane at right-angles to said first axis, said first and second arms surrounding the spherical pivot and at least a portion of said control lever first and second elongate followers for connecting said first and second arms to respective first and second spool valves, one end of said first follower being mounted at the free end of said first end and extending in said plane in a direction parallel to said second arm, the other end of said first follower being connectible to the first spool valve to operate the first spool valve when the control lever is pivotted about said second axis, one end of said second follower being mounted at the free end of said second arm and extending in said plane in a direction parallel to said first arm, the other end of said second follower being connectible to the second spool valve to operate the second spool valve when the control lever is pivotted about said first axis, wherein each follower is in the form of a substantially L-shaped member, one arm of said L-shaped member being adapted to receive the ball joint of a respective arm of the actuating member and the other arm of said L-shaped member being provided with a projection arranged to co-operate with a recess provided in the other arm of the other follower.
Claim 7
Dependent Claim
290 words
A control device for hydraulic spool valves comprising a control lever mounted on a spherical pivot, an actuating member fixed to said lever and lying in a plane and passing through the center of the spherical pivot, of said pivot, said actuating lever having a first arm extending along a first axis in said plane and having a second arm extending along a second axis in said plane at right-angles to said first axis, said first and second arms surrounding the spherical pivot and at least a portion of said control lever first and second elongate followers for connecting said first and second arms to respective first and second spool valves, one end of said first follower being mounted at the free end of said first end and extending in said plane in a direction parallel to said second arm, the other end of said first follower being connectible to the first spool valve to operate the first spool valve when the control lever is pivotted about said second axis, one end of said second follower being mounted at the free end of said second arm and extending in said plane in a direction parallel to said first arm, the other end of said second follower being connectible to the second spool valve to operate the second spool valve when the control lever is pivotted about said first axis, wherein each follower is in the form of a substantially L-shaped member, one arm of said L-shaped member being adapted to receive the ball joint of a respective arm of the actuating member and the other arm of said L-shaped member being provided with a projection arranged to co-operate with a recess provided in the other arm of the other follower.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-08 | 1987-02-07 | 1987-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-08 | 1991-02-07 | 1991-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-08 | 1995-02-07 | 1995-08-09 | $7700.00 | Window Closed / Lapsed |