Flow line switch
AssigneeCameron Iron Works, Inc.
InventorMarvin R. Jones
Life of this patent
Estimating the term…
Abstract
A flow line switch having a housing and a rotor mounted within the housing, an annular piston between the rotor and the housing and adapted to slide axially in the annulus between the rotor and housing, means for supplying and venting fluid to and from opposite ends of the annulus for movement of the piston, the rotor having a passageway extending therethrough adapted to connect to at least one port through the housing at one end and selectively to one of at least two ports at the other end and stop means at the extremities of travel of the piston to assure communication between the preselected ports.
Claims14
A flow line switch comprising
- a housing having an internal cylindrical chamber,
- at least one passage communicating through the housing into one end of the chamber,
- at least two passages communicating through the housing into the other end of the chamber,
- a rotor positioned within the chamber against the ends thereof and having an exterior cylindrical surface spaced from the interior cylindrical surface of the housing to form an annular space and a tube extending through the rotor to communicate between the ends of the chamber,
- an annular piston positioned within said annular space,
- means for introducing an actuating fluid into either end of said annular space to cause the piston to reciprocate therein, and
- means connecting the piston with the rotor and the piston with the housing so that movement of the piston in one direction rotates the rotor and movement of the piston in the opposite direction reverses the direction of rotation of the rotor whereby the tube provides a change of communication between the housing end passages.
Dependencies are inferred from the claim text.