Shuttle valve assembly
AssigneeSmiths Aerospace Actuation Systems-Yakima, Inc.
InventorScott Carl Kunkler
Life of this patent
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Abstract
A shuttle valve assembly, comprising a valve housing containing first, second and third ports, and a cavity in the housing, a poppet shiftable in the cavity between a first position and a second position, the poppet in its first position directing flow between the first port and the second port, communication between the second port and third port then being blocked, the poppet in its second position directing flow between the third port and the second port, communication between the second port and first port then being blocked, and a friction responsive holder acting to hold the poppet in its first position until fluid pressure shifts the poppet to its second position, and to hold the poppet in its second position until fluid pressure shifts the poppet to its first position.
Claims10
A shuttle valve assembly, comprising
- a) a valve housing containing first, second and third ports, and a cavity in the housing,
- b) a poppet shiftable in the cavity between a first position and a second position,
- c) the poppet in its first position directing flow between the first port and the second port, communication between the second port and third port then being blocked,
- d) the poppet in its second position directing flow between the third port and the second port, communication between the second port and first port then being blocked,
- e) and a friction responsive holder acting to hold the poppet in said first position until fluid pressure shifts the poppet to said second position, and to hold the poppet in said second position until fluid pressure shifts the poppet to said first position,
- f) there being a body having a bore into which said housing is endwise received, the body having first, second and third passages in registration with said first, second and third ports, respectfully,
- g) said first, second and third passages intersecting said bore transversely of the poppet.
A shuttle valve assembly, comprising
- a) a valve housing containing first, second and third ports, and a cavity in the housing,
- b) a poppet shiftable in the cavity between a first position and a second position,
- c) the poppet in its first position directing flow between the first port and the second port, communication between the second port and third port then being blocked,
- d) the poppet in its second position directing flow between the third port and the second port, communication between the second port and first port then being blocked,
- e) and a friction responsive holder acting to hold the poppet in said first position until fluid pressure shifts the poppet to said second position, and to hold the poppet in said second position until fluid pressure shifts the poppet to said first position,
- f) said holder being carried by the poppet in a position to frictionally engage a surface to resist poppet shifting, until fluid pressure creates force that overcomes the frictional engagement of the holder and surface.
A shuttle valve assembly, comprising
- a) a valve housing containing first, second and third ports, and a cavity in the housing,
- b) a poppet shiftable in the cavity between a first position and a second position,
- c) the poppet in its first position directing flow between the first port and the second port, communication between the second port and third port then being blocked,
- d) the poppet in its second position directing flow between the third port and the second port, communication between the second port and first port then being blocked,
- e) and a friction responsive holder acting to hold the poppet in said first position until fluid pressure shifts the poppet to said second position, and to hold the poppet in said second position until fluid pressure shifts the poppet to said first position,
- f) and wherein the poppet has longitudinally spaced tapered ends, and there are recessed tapered seats on the housing and on a plug received in the housing, to seat said tapered ends, alternately.
Dependencies are inferred from the claim text.