US3893472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manually controlled regulator valve with exhaust control
Assignee: Motors Liquidation Co
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Filing: 1974-06-12
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Granted: 1975-07-08
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Expires: 1994-06-12
Abstract
Abstract A manually controlled variable pressure reducing valve having an exhaust passage which is closed when the manual control is disconnected. When the exhaust passage is closed, the pressure at the valve outlet, which normally provides a control function, becomes equal to input pressure. If the manual control is disconnected, the loss of control pressure in the system is prevented, and maximum control pressure is established. This is particularly useful in automatic transmission controls where throttle pressure is generated by a manual TV valve.
Inventors
- 👤 David A Schuster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:05
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/02; F16H61/0262; F16H61/0276; F16H61/029; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/2607
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
173 words
A manually controlled throttle pressure regulator valve comprising; a valve body; fluid passage means in said valve body including an inlet pressure passage, an outlet pressure passage, and an exhaust pressure passage; valve means disposed in said valve body for providing selective fluid communication between said inlet and outlet passages and between said outlet and exhaust passages; manually operated means for imposing a manually controlled bias on said valve means for establishing a variable pressure between maximum and minimum values in said outlet passage proportional to said bias, said valve means establishing communication between said outlet passage and said exhaust passage for reducing the pressure in said outlet passage when the pressure therein is greater than the bias; operator control means mechanically connected to said manually operated means for transmitting operator motion to said manually operated means; and exhaust control means for preventing exhausting of said outlet passage and maintaining the pressure level in said outlet passage at a predetermined value when said operator control means is disconnected from said manually operated means.
Claim 2
Dependent Claim
173 words
A manually controlled throttle pressure regulator valve comprising; a valve body; fluid passage means in said valve body including an inlet pressure passage, an outlet pressure passage, and an exhaust pressure passage; valve means disposed in said valve body for providing selective fluid communication between said inlet and outlet passages and between said outlet and exhaust passages; manually operated means for imposing a manually controlled bias on said valve means for establishing a variable pressure between maximum and minimum values in said outlet passage proportional to said bias, said valve means establishing communication between said outlet passage and said exhaust passage for reducing the pressure in said outlet passage when the pressure therein is greater than the bias; operator control means mechanically connected to said manually operated means for transmitting operator motion to said manually operated means; and exhaust control means for preventing exhausting of said outlet passage and maintaining the pressure level in said outlet passage at a predetermined value when said operator control means is disconnected from said manually operated means.
Claim 3
Dependent Claim
208 words
A manually controlled throttle pressure regulator valve comprising; a valve body; fluid passage means in said valve body including an inlet pressure passage, an outlet pressure passage, and an exhaust pressure passage; valve means disposed in said valve body for providing selective fluid communication between said inlet and outlet passages and between said outlet and exhaust passages; manually operated means for imposing a manually controlled bias on said valve means for establishing a variable pressure between maximum and minimum values in said outlet passage proportional to said bias, said valve means establishing communication between said outlet passage and said exhaust passage for reducing the pressure in said outlet passage when the pressure is greater than the bias; operator control means mechanically connected to said manually operated means for transmitting operator motion to said manually operated means; and exhaust control means for preventing exhausting of said outlet passage and maintaining the pressure level in said outlet passage at a predetermined value when said operator control means is disconnected from said manually operated means including a ball valve in said exhaust passage, and a rod means operatively connected between said manually operated means and said ball valve for maintaining said ball valve open when said operator control means is connected.
Claim 4
Dependent Claim
208 words
A manually controlled throttle pressure regulator valve comprising; a valve body; fluid passage means in said valve body including an inlet pressure passage, an outlet pressure passage, and an exhaust pressure passage; valve means disposed in said valve body for providing selective fluid communication between said inlet and outlet passages and between said outlet and exhaust passages; manually operated means for imposing a manually controlled bias on said valve means for establishing a variable pressure between maximum and minimum values in said outlet passage proportional to said bias, said valve means establishing communication between said outlet passage and said exhaust passage for reducing the pressure in said outlet passage when the pressure is greater than the bias; operator control means mechanically connected to said manually operated means for transmitting operator motion to said manually operated means; and exhaust control means for preventing exhausting of said outlet passage and maintaining the pressure level in said outlet passage at a predetermined value when said operator control means is disconnected from said manually operated means including a ball valve in said exhaust passage, and a rod means operatively connected between said manually operated means and said ball valve for maintaining said ball valve open when said operator control means is connected.
Claim 5
Dependent Claim
285 words
A manually controlled throttle pressure regulator valve comprising; a valve body; fluid passage means in said valve body including an inlet pressure passage, an outlet pressure passage, and an exhaust pressure passage; sliding valve means disposed in said valve body for providing selective fluid communication between said inlet and outlet pAssages and between said outlet and exhaust passages; manually operated means for imposing a manually controlled bias on said valve means for establishing a variable pressure between maximum and minimum values in said outlet passage proportional to said bias including a manual plunger, a spring disposed between said manual plunger and said valve means, a bracket, a lever rotatably supported on said bracket having a first surface contacting said manual plunger and a second surface, ball valve means disposed in said exhaust passage, rod means mounted in said bracket, first spring means urging said rod means to contact and open said ball valve means; and second spring means operatively connected between said lever and bracket for urging said second surface to contact said rod means to move said rod means out of contact with said ball valve means, said sliding valve means establishing communication between said outlet passage and said exhaust passage for reducing the pressure in said outlet passage when the pressure therein is greater than the bias; and operator control means mechanically connected to said lever for transmitting operator motion to said lever; said second spring means moving said rod means to permit closing of said ball valve means for preventing exhausting of said outlet passage and maintaining the pressure level in said outlet passage at a value substantially equal to inlet pressure when said operator control means is disconnected from said lever.
Claim 6
Dependent Claim
285 words
A manually controlled throttle pressure regulator valve comprising; a valve body; fluid passage means in said valve body including an inlet pressure passage, an outlet pressure passage, and an exhaust pressure passage; sliding valve means disposed in said valve body for providing selective fluid communication between said inlet and outlet pAssages and between said outlet and exhaust passages; manually operated means for imposing a manually controlled bias on said valve means for establishing a variable pressure between maximum and minimum values in said outlet passage proportional to said bias including a manual plunger, a spring disposed between said manual plunger and said valve means, a bracket, a lever rotatably supported on said bracket having a first surface contacting said manual plunger and a second surface, ball valve means disposed in said exhaust passage, rod means mounted in said bracket, first spring means urging said rod means to contact and open said ball valve means; and second spring means operatively connected between said lever and bracket for urging said second surface to contact said rod means to move said rod means out of contact with said ball valve means, said sliding valve means establishing communication between said outlet passage and said exhaust passage for reducing the pressure in said outlet passage when the pressure therein is greater than the bias; and operator control means mechanically connected to said lever for transmitting operator motion to said lever; said second spring means moving said rod means to permit closing of said ball valve means for preventing exhausting of said outlet passage and maintaining the pressure level in said outlet passage at a value substantially equal to inlet pressure when said operator control means is disconnected from said lever.
References Cited (Backward Citations)
US3180173A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-07 | 1979-01-06 | 1979-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-07 | 1983-01-06 | 1983-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-07 | 1987-01-06 | 1987-07-08 | $7700.00 | Window Closed / Lapsed |