Linear motion arresting device
First Claim
1. A linear motion arresting device comprising a relatively stationary sleeve having a friction reducing, internal, cylindrical bore;
- a piston slidingly mating said bore and formed of a plurality of piston parts, slidable relative to each other along a plane parallel to the axis of said cylindrical bore and movable radially toward and away from each other, said piston parts, each having an elongated groove, extending generally parallel to the axis of said cylindrical bore and providing therebetween and directly between piston parts, a ball-receiving channel extending generally parallel to the axis of the cylindrical bore in which a ball may travel and extending at an angle thereto with one end portion of each groove extending more radially inwardly of the direction of said cylindrical bore than the other end portion;
a metallic ball means mounted for traveling movement in said ball-receiving channel;
resilient means urging one of said piston parts radially and into contact with said cylindrical bore; and
prime mover means connected with another of said piston parts and moving said other piston part longitudinally of the cylindrical bore and in turn, through said metallic ball, moving said one piston part relatively longitudinally and radially of said cylindrical bore.
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Accused Products
Abstract
A piston is mounted for relative sliding movement in the cylindrical bore of a sleeve. The piston comprises a plurality of piston parts, one, a driving piston part connected with a prime mover or a fixed support. A piston rod, supported by the piston at one end and by a sleeve guide at the other end, drives said driving piston part. The other and driven piston parts are connected with, and driven by said one piston part through a metallic ball, rollable in a groove formed in abutting piston part surfaces. This groove extends generally parallel to the piston axis, at an angle thereto, and with the opposite end groove portions thereof closest to the piston axis. When the piston parts move in given and opposite directions, the depth of the groove reduces and the ball functions to transmit motion from the driving piston part to the driven piston part. When the piston parts move in the other direction, the depth of the groove increases and no motion is transmitted. The driven piston parts are relatively initially resiliently urged against the cylindrical bore so they tend to hold such position and movement of the driving piston in one direction causes relative motion between the piston parts and the ball-receiving groove causing the ball to wedge and interconnect the driving and driven piston parts. Movement of the driving piston part in the other direction disconnects the driving and driven piston parts.
27 Citations
8 Claims
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1. A linear motion arresting device comprising a relatively stationary sleeve having a friction reducing, internal, cylindrical bore;
- a piston slidingly mating said bore and formed of a plurality of piston parts, slidable relative to each other along a plane parallel to the axis of said cylindrical bore and movable radially toward and away from each other, said piston parts, each having an elongated groove, extending generally parallel to the axis of said cylindrical bore and providing therebetween and directly between piston parts, a ball-receiving channel extending generally parallel to the axis of the cylindrical bore in which a ball may travel and extending at an angle thereto with one end portion of each groove extending more radially inwardly of the direction of said cylindrical bore than the other end portion;
a metallic ball means mounted for traveling movement in said ball-receiving channel;
resilient means urging one of said piston parts radially and into contact with said cylindrical bore; and
prime mover means connected with another of said piston parts and moving said other piston part longitudinally of the cylindrical bore and in turn, through said metallic ball, moving said one piston part relatively longitudinally and radially of said cylindrical bore. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- a piston slidingly mating said bore and formed of a plurality of piston parts, slidable relative to each other along a plane parallel to the axis of said cylindrical bore and movable radially toward and away from each other, said piston parts, each having an elongated groove, extending generally parallel to the axis of said cylindrical bore and providing therebetween and directly between piston parts, a ball-receiving channel extending generally parallel to the axis of the cylindrical bore in which a ball may travel and extending at an angle thereto with one end portion of each groove extending more radially inwardly of the direction of said cylindrical bore than the other end portion;
Specification