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US 4,535,968 AGranted
Valve
AssigneeOtis Engineering Corporation
InventorsJohn C. Gano, Gary A. Kohn
Life of this patent
Estimating the term…
Abstract
A ball type valve in which the ball is rotated by the cooperation of multiple tracks and multiple track followers. Also, a pressure operated permanent lock-out is disclosed. Pressure applied to a piston withdraws an expander from under a lock ring to release a lock-out sleeve. Continued application of pressure drives the sleeve to valve lock-open position where the sleeve is permanently locked to the housing.
Claims34
A valve comprising,
- a housing,
- an actuator in the housing,
- means for reciprocating the actuator,
- a ball valve member and seat controlling flow through said housing,
- means maintaining said ball valve member and seat together,
- ball rotation means,
- at least two cooperable track followers and tracks with the tracks lying in substantially a single plane and carried by one of the ball valve member and ball rotation means and the followers carried by the other of the ball valve member and ball rotation means,
- one of said ball valve member and ball rotation means carried by and reciprocal with said actuator relative to the other of said ball valve member and ball rotation means and effecting simultaneous and continuous relative movement between said track and track followers and rotation of said ball valve member about substantially a single rotational axis between o,pen and closed positions.
5 more elements
A valve comprising,
- a housing,
- an actuator in the housing,
- means for reciprocating the actuator,
- a ball valve member and seat controlling flow through said housing,
- means maintaining said ball valve member and seat together,
- at least two track followers carried by the ball valve member,
- said track followers spaced from the center of rotation of the ball valve member and travelling in two different paths with rotation of the ball valve member,
- ball rotation means including at least two tracks lying in substantially a single plane and engaging said track followers,
- one of said ball rotation means and ball valve member reciprocal relative to the other in response to reciprocation of said actuator effecting simultaneous and continuous relative movement of said tracks and followers to rotate said ball valve member between open and closed positions.
6 more elements
A valve comprising,
- a housing,
- an actuator in the housing,
- means for reciprocating the actuator,
- a ball valve member and seat controlling flow through said housing,
- means maintaining said ball valve member and seat together,
- two pairs of track followers with one pair carried on each of opposite sides of the ball valve member,
- each of said pair of track followers spaced from the center of rotation of the ball valve member and travelling in two different paths with rotation of the ball valve member,
- ball rotation means including two pairs of tracks engaging said track followers,
- one of said ball rotation means and ball valve member reciprocal relative to the other in response to reciprocation of said actuator effecting simultaneous and continuous relative movement of said tracks and followers to rotate said ball valve member between open and closed positions.
6 more elements
A valve comprising,
- a housing,
- an actuator in the housing,
- means for reciprocating the actuator,
- a ball valve member and seat controlling flow through said housing,
- means maintaining said ball valve member and seat together,
- ball rotation means,
- at least two cooperable track followers and tracks with the tracks crossing each other and carried by one of the ball valve member and ball rotation means and the followers carried by the other of the ball valve member and ball rotation means,
- one of said ball valve member and ball rotation means carried by and reciprocal with said actuator relative to the other of said ball valve member and ball rotation means and effecting simultaneous and continuous relative movement between said track and track followers and rotation of said ball valve member about substantially a single rotational axis between open and closed positions.
5 more elements
A subsurface safety valve comprising,
- a housing,
- a cooperable valve member and seat controlling flow through the housing,
- a valve actuator reciprocal in the housing for moving the valve member between open and closed position,
- a lock-out sleeve movable downwardly in the housing and engaging said actuator and moving it to valve open position,
- an internal groove in said housing,
- a latch means in said groove,
- a downwardly facing shoulder on said sleeve engaging said latch means,
- a piston slidably and sealably engaging said housing and sleeve,
- stop means limiting relative movement between said piston and sleeve,
- an expander ring on said piston releasably maintaining said latch means in said groove,
- shear means releasably securing said piston to one of said housing and sleeve, and
- a resiliently loaded slip means locking said sleeve in valve member lock-open position.
9 more elements
A subsurface safety valve comprising,
- a housing,
- a cooperable valve member and seat controlling flow through the housing,
- a valve actuator reciprocal in the housing for moving the valve member between open and closed position,
- a lock-out sleeve movable downwardly in the housing and engaging said actuator and moving it to valve open position,
- a latch means between said sleeve and housing,
- pressure responsive means releasably maintaining said latch means in extended position latching said sleeve to said housing and slidable in said housing and downwardly on said sleeve to a latch release position where it is held in sealing position on the sleeve and seals between the housing and sleeve,
- shear means releasably holding said pressure responsive means in latch extending positions, and
- means locking said sleeve means in valve lock-open position after release of said latch means and movement of said actuator to valve member open position.
5 more elements
Dependencies are inferred from the claim text.