US3827765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake valve
Assignee: Individual
•
Filing: 1973-01-29
•
Granted: 1974-08-06
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Expires: 1993-01-29
Abstract
Abstract A brake valve for generating a right pressure output through a right pressure output port in response to a force input at a right force input, and a left pressure output through a left pressure output port in response to a force input at a left force input point.
Inventors
- 👤 R Husted
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:46
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/12; B60T13/16; B60T13/18; B60T7/00; B60T7/02; B60T7/04; B62; B62D; B62D11/00; B62D11/02; B62D11/06; B62D11/08
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
304 words
A brake valve for generating, at least one of, a right pressure output through a right pressure output port in response to a force input at a right force input point, and, a left pressure output through a left pressure output port in response to a force input at a left force input point, comprising; a yoke having said right and said left force input points, and a right and a left force output points, and a pivot connection to a first end of a shaft whose second end is inserted into a housing, said housing having; means for generating a control pressure, in a chamber, which corresponds to the force exerted by said yoke on said shaft, through said pivot connection, a right valve means for blocking said control pressure from said right pressure output port, in response to a force exerted on it by said yoke through said right force output point, and, a left valve means for blocking said control pressure from said left pressure output port, in response to a force exerted on it by said yoke through said left force output point, said yoke adapted to exert said force on said shaft through said pivot connection in response to a force applied to at least one of its said right or left force input points, and in addition; to exert said force on said right valve means, through its said right force output point, in response to the force at its said right force input point being substantially smaller than the force at its left force input point, or, to exert said force on said left valve means, through its said left force output point, in response to the force at its said left force input point being substantially smaller than the force at its right force input point.
Claim 2
Dependent Claim
304 words
A brake valve for generating, at least one of, a right pressure output through a right pressure output port in response to a force input at a right force input point, and, a left pressure output through a left pressure output port in response to a force input at a left force input point, comprising; a yoke having said right and said left force input points, and a right and a left force output points, and a pivot connection to a first end of a shaft whose second end is inserted into a housing, said housing having; means for generating a control pressure, in a chamber, which corresponds to the force exerted by said yoke on said shaft, through said pivot connection, a right valve means for blocking said control pressure from said right pressure output port, in response to a force exerted on it by said yoke through said right force output point, and, a left valve means for blocking said control pressure from said left pressure output port, in response to a force exerted on it by said yoke through said left force output point, said yoke adapted to exert said force on said shaft through said pivot connection in response to a force applied to at least one of its said right or left force input points, and in addition; to exert said force on said right valve means, through its said right force output point, in response to the force at its said right force input point being substantially smaller than the force at its left force input point, or, to exert said force on said left valve means, through its said left force output point, in response to the force at its said left force input point being substantially smaller than the force at its right force input point.
Claim 3
Dependent Claim
42 words
A brake valve as in claim 1, having venting means to prevent a pressure from prevailing in said right, or, said left pressure output port, while it is being blocked from said chamber by said right, or, said left valve means, respectively.
Claim 4
Dependent Claim
59 words
A brake valve as in claim 1, said pressure generating means adapted to generate a control pressure which is active against one face of a moveable wall which is attached to said second end of said shaft, thereby generating a reaction force on said shaft which balances the force exerted on it by said yoke through said pivot connection.
Claim 5
Dependent Claim
50 words
A brake valve as in claim 1, said chamber confined within a bore defined by said housing, by a stationary end wall at one end of said bore through which said shaft is inserted into said housing and by said moveable wall to which said second shaft''s end is connected.
Claim 6
Dependent Claim
48 words
A brake valve as in claim 4, said shaft and said moveable wall adapted to move in response to a force exerted on said shaft by said yoke through said pivot connection and to, thereby, decrease the volume of said chamber during power-off operation of the brake valve.
Claim 7
Dependent Claim
14 words
A brake valve as in claim 4, said moveable wall comprising a reaction piston.
Claim 8
Dependent Claim
72 words
A brake valve as in claim 4, said moveable wall comprising an annular piston which is normally, during Power-on operation, at rest, and a reaction piston which is connected to said second end of said shaft, and which is adapted to engage said annular piston after a relativetravel therein between the two pistons took place, and move it, thereby decreasing the volume of said chamber during power-off operation of the brake valve.
Claim 9
Dependent Claim
22 words
A brake valve as in claim 4, having dampening means to dampen the movement of said moveable wall relative to said housing.
Claim 10
Dependent Claim
17 words
A brake valve as in claim 4, having resilient means between said yoke and said moveable wall.
Claim 11
Dependent Claim
84 words
A brake valve as in claim 4, having a flow passage initiating at an inlet and ending at an outlet, comprising; a check-valve for preventing upstream flow in said flow passage, a variable orifice adapted to restrict flow through said passage in response to a force applied to said shaft by said yoke through said pivot connection, said chamber in which said control pressure prevails being in communication with said flow passage at a point which is between said check-valve and said variable orifice.
Claim 12
Dependent Claim
44 words
A brake valve as in claim 10, said variable orifice is a rectangular opening with a large, constant, base dimension and a small, variable, height dimension which is decreased in response to a force on said shaft by said yoke through said pivoted connection.
Claim 13
Dependent Claim
24 words
A brake valve as in claim 10, said variable orifice as defined between said moveable wall and a circumferential step formed on said bore.
Claim 14
Dependent Claim
25 words
A brake valve as in claim 10, said moveable wall comprising an annular piston and a reaction piston between which said variable orifice is defined.
Claim 15
Dependent Claim
64 words
A brake valve as in claim 4, having a normally open valve which maintains said chamber vented, and a normally closed valve which is adapted to block pressurized fluid from entering said chamber, said normally open valve adapted to close and said normally closed valve adapted to open in response to a force exerted on said shaft by said yoke through said pivot connection.
References Cited (Backward Citations)
FR1494896A
Cited
US3431029A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |