E - Fixed Constructions – 02 – F
Patent
E - Fixed Constructions
02
F
121/20
E02F 5/18 (2006.01) E21B 4/14 (2006.01)
Patent
CA 1063447
ABSTRACT OF THE DISCLOSURE The apparatus consists of a hollow body tapering forward contained wherein is a striker which divides the space inside the body into a forward operating chamber and a rear exit chamb- er. The striker is provided with ports for admitting compressed air into the forward operating chamber and disposing of spent air leaving the chamber, and is also provided with a space left open at the rear end face. Accommodated inside the body is an air- -distributing pipe with a longitudinal passage which is connect- ed to a line supplying compressed air and is disposed so that the forward portion of said pipe is contained in the space in- side the striker, placing thus said space in communication with the source of compressed air, and the rear portion is built into the rear of the body of the apparatus with provision for longi- tudinal travel relatively to the body between the foremost and rearmost positions of the pipe. For holding fast the pipe in its extreme positions, determining the direction of movement which can be either forward or in reverse, the apparatus is pro- vided with a means in the form of a member which exerts radial springy action, is of annular cross section and is so disposed inside the body of the apparatus that the outward side surface of said member faces the inward side surface of the body and the inward side surface faces the longitudinal axis of the appa- ratus, one of said surfaces of the springy member being exposed to the pressure of compressed air and the other, to the pressure of surrounding medium. Featuring a reliable way of holding fast the pipe in the extreme positions relatively to the body, the apparatus disclosed poses no manufacturing problems and is more convenient in operation than the known apparatus of the same type
256486
Kamensky Veniamin V.
Kostylev Alexandr D.
Sudnishnikov Boris V.
Terskov Alexei D.
Tupitsyn Konstantin K.
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