US4071046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Directional control poppet valve
Assignee: Individual
•
Filing: 1976-10-07
•
Granted: 1978-01-31
•
Expires: 1996-10-07
Abstract
Abstract A valve system for controlling the direction of flow of pressurized fluid. The valve system includes a valve housing, with an inlet port for receiving pressurized fluid therein, a first cylinder port and a second cylinder port. The housing is further constructed with first and second exhaust ports. Passageways connect the inlet port to the first cylinder port and to the second cylinder port. Passageways also extend from the first cylinder port to the first exhaust port and from the second cylinder port to the second exhaust port. A pair of pistons and corresponding poppet valves are slidable within the housing to control flow of fluid through the passageways. In one embodiment, the pistons and poppet valves are moved by communicating fluid pressure from the inlet port either above or below the pistons. In an alternative embodiment, the pistons and popper valves are mechanically actuated.
Inventors
- 👤 H. Alton Cates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:25
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/04; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86919; Y10T137/87169; Y10T137/87193; Y10T137/87201; Y10T137/87209; Y10T137/87233; Y10T137/87241
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
236 words
A valve system for controlling the direction of flow of a pressurized fluid to opposite ends of a cylinder of a servo motor to actuate the piston of the servo motor in opposite directions, comprising: a valve housing; an inlet port for receiving pressurized fluid therethrough; a first cylinder port in the housing communicating with one end of the cylinder of the servo motor; a second cylinder port in the housing communicating with the opposite end of the servo motor; first and second exhaust ports in the housing; a first passageway extending from the inlet port to the first cylinder port; a second passageway extending from the inlet port to the second cylinder port; a third passageway extending from the first cylinder port to the first exhaust port; a fourth passageway extending from the second cylinder port to the second exhaust port; a first poppet valve normally seated against the housing to close the first passageway; a second poppet valve normally seated against the housing to close the second passageway; a first piston slidable within the valve housing and normally seated against the first poppet valve to close the third passageway; a second piston slidable within the valve housing and normally seated against the second poppet valve to close the fourth passageway; and means for moving the first and second pistons to selectively control the flow of fluid through the first, second, third and fourth passageways.
Claim 2
Dependent Claim
236 words
A valve system for controlling the direction of flow of a pressurized fluid to opposite ends of a cylinder of a servo motor to actuate the piston of the servo motor in opposite directions, comprising: a valve housing; an inlet port for receiving pressurized fluid therethrough; a first cylinder port in the housing communicating with one end of the cylinder of the servo motor; a second cylinder port in the housing communicating with the opposite end of the servo motor; first and second exhaust ports in the housing; a first passageway extending from the inlet port to the first cylinder port; a second passageway extending from the inlet port to the second cylinder port; a third passageway extending from the first cylinder port to the first exhaust port; a fourth passageway extending from the second cylinder port to the second exhaust port; a first poppet valve normally seated against the housing to close the first passageway; a second poppet valve normally seated against the housing to close the second passageway; a first piston slidable within the valve housing and normally seated against the first poppet valve to close the third passageway; a second piston slidable within the valve housing and normally seated against the second poppet valve to close the fourth passageway; and means for moving the first and second pistons to selectively control the flow of fluid through the first, second, third and fourth passageways.
Claim 3
Dependent Claim
48 words
The valve system of claim 1 wherein the piston moving means comprises: first means for selectively moving the first piston to unseat the first poppet valve from the housing thereby opening the first passageway to permit fluid to flow from the inlet port to the first cylinder port.
Claim 4
Dependent Claim
45 words
The valve system of claim 2 wherein the piston moving means further comprises: second means for moving the second piston from the second poppet valve thereby opening the fourth passageway to permit fluid from the second cylinder port to flow to the second exhaust port.
Claim 5
Dependent Claim
42 words
The valve system of claim 3 wherein the first piston moving means comprises: first fluid pressure means for selectively directing fluid pressure on the first piston to move the first piston toward the first poppet valve and thereby open the first passageway.
Claim 6
Dependent Claim
41 words
The valve system of claim 4 wherein the second piston moving means comprises: second fluid pressure means for selectively directing fluid pressure on the second piston to move the second piston from the second poppet valve thereby opening the fourth passageway.
Claim 7
Dependent Claim
106 words
The valve system of claim 5 wherein the first and second fluid pressure means comprise: a first flow passage extending from the inlet port to a first upper chamber above the first piston and to a second lower chamber below the second piston; a first valve for normally closing the first flow passage between the inlet port and the first upper and second lower chambers; and means for selectively opening the valve to permit communication of fluid pressure through the first flow passage to the first and second pistons thereby directing fluid pressure on the first and second pistons to open the first and fourth passageways.
Claim 8
Dependent Claim
13 words
The valve system of claim 6 wherein the first valve is solenoid actuated.
Claim 9
Dependent Claim
77 words
The valve system of claim 6 further comprising: third means for selectively moving the first piston from the first poppet valve thereby opening the third passageway to permit fluid to flow from the first cylinder port to the first exhaust port; and fourth means for moving the second piston to unseat the second poppet valve from the housing thereby opening the second passageway to permit fluid from the inlet port to flow to the second cylinder port.
Claim 10
Dependent Claim
56 words
The valve system of claim 8 wherein the third piston moving means comprises: a third fluid pressure means for directing fluid pressure on the first piston to move the first piston from the first poppet valve thereby opening the third passageway to permit fluid from the first outlet port to flow to the first exhaust port.
Claim 11
Dependent Claim
58 words
The valve system of claim 9 wherein the fourth piston moving means comprises: fourth fluid pressure means for directing fluid pressure on the second piston to move the second piston to unseat the second poppet valve from the housing thereby opening the second passageway to permit fluid to flow from the inlet port to the second cylinder port.
Claim 12
Dependent Claim
105 words
The valve system of claim 10 wherein the third and fourth fluid pressure means comprise: a second passage extending from the inlet port to a second upper chamber above the second piston and to a first lower chamber below the first piston; a second valve normally closing the second flow passage between the inlet port and the second upper and first lower chambers; and means for selectively opening the second valve to permit communication of fluid pressure through the second flow passage to the first and second pistons thereby directing fluid pressure on the first and second pistons to open the second and third passageways.
Claim 13
Dependent Claim
13 words
The valve system of claim 11 wherein the second valve is solenoid actuated.
Claim 14
Dependent Claim
49 words
The valve system of claim 11 further comprising: a first shaft fixedly attached to the first piston; means for actuating the first shaft to move the first piston; a second shaft fixedly attached to the second piston; and means for moving the second shaft to move the second piston.
Claim 15
Dependent Claim
56 words
The valve system of claim 13 wherein the ends of the first shaft and second shaft remote from the first and second pistons extend outside of the housing and are joined on opposite sides of the fulcrum point of a lever such that rotation of the lever moves the first and second pistons in opposite directions.
Claim 16
Dependent Claim
58 words
The valve system of claim 1 wherein the means for moving the first and second pistons comprise: a first shaft fixedly attached to the first piston; means for actuating the first shaft to move the first piston; a second shaft fixedly attached to the second piston; and means for moving the second shaft to move the second piston.
Claim 17
Dependent Claim
56 words
The valve system of claim 15 wherein the ends of the first shaft and second shaft remote from the first and second pistons extend outside of the housing and are joined on opposite sides of the fulcrum point of a lever such that rotation of the lever moves the first and second pistons in opposite directions.
Claim 18
Dependent Claim
119 words
A valve system for controlling the flow of pressurized fluid, comprising: a valve housing; an inlet port for receiving pressurized fluid; a cylinder port in the housing; an exhaust port in the housing; a first passageway extending from the inlet port to the cylinder port; a second passageway extending from the cylinder port to the exhaust port; a poppet valve slidably positioned within the housing and normally seated against a valve seat within the housing to close the first passageway; a piston slidable within the housing and normally seated against the poppet valve to close the second passageway; and means for selectively moving the piston to open and close the first and second passageways to control the flow therethrough.
Claim 19
Dependent Claim
119 words
A valve system for controlling the flow of pressurized fluid, comprising: a valve housing; an inlet port for receiving pressurized fluid; a cylinder port in the housing; an exhaust port in the housing; a first passageway extending from the inlet port to the cylinder port; a second passageway extending from the cylinder port to the exhaust port; a poppet valve slidably positioned within the housing and normally seated against a valve seat within the housing to close the first passageway; a piston slidable within the housing and normally seated against the poppet valve to close the second passageway; and means for selectively moving the piston to open and close the first and second passageways to control the flow therethrough.
Claim 20
Dependent Claim
90 words
The valve system of claim 17 wherein the piston moving means comprises: control means for selectively moving the piston between a first position where the piston is forced against the poppet valve to unseat the poppet valve from the housing thereby opening the first passageway, a second position where the piston is withdrawn from the poppet valve thereby opening the second passageway and a third position where the piston is seated against the poppet valve with the poppet valve seated against the housing to close the first and second passageways.
Claim 21
Dependent Claim
89 words
The valve system of claim 18 wherein the piston control means comprises: a first flow channel extending from the inlet port to an upper chamber above the piston; a first valve for normally closing the first flow channel between the inlet port and the upper chamber; and means for selectively opening the valve to permit communication of fluid pressure through the first flow channel to force the piston to the first position thereby opening the first passageway and permitting fluid flow from the inlet port to the cylinder port.
Claim 22
Dependent Claim
91 words
The valve system of claim 19 wherein the piston control means further comprises: a second flow channel extending from the inlet port to a lower chamber below the piston; a second valve for normally closing the second flow channel between the inlet port and the lower chamber; and means for selectively opening the second valve to permit communication of fluid pressure through the second flow channel to force the piston to the second position thereby opening the second passageway and permitting fluid flow from the cylinder port to the exhaust port.
Claim 23
Dependent Claim
15 words
The valve system of claim 20 wherein the first and second valves are solenoid actuated.
Claim 24
Dependent Claim
36 words
The valve system of claim 18 wherein the piston control means comprises: a shaft fixedly attached to the piston; and means for actuating the shaft to move the piston between the first, second and third positions.
References Cited (Backward Citations)
US1955154A
Cited
US3038500A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-30 | 1981-08-01 | 1982-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-30 | 1985-08-01 | 1986-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-30 | 1989-08-01 | 1990-01-31 | $7700.00 | Window Closed / Lapsed |