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Machine translation
1. (WO1981000124) REVERSIBLE PERCUSSIVE ACTION DEVICE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/000124    International Application No.:    PCT/SU1979/000045
Publication Date: 22.01.1981 International Filing Date: 02.07.1979
IPC:
E21B 4/14 (2006.01)
Applicants:
Inventors:
Priority Data:
SU79/00045 02.07.1979 WO
Title (EN) REVERSIBLE PERCUSSIVE ACTION DEVICE
(FR) DISPOSITIF A PERCUSSION REVERSIBLE
Abstract: front page image
(EN)A reversible percussive action device comprising, inside its casing (1), a reciprocating impulse member (4) and being provided with a system of distribution of a fluid medium which drives, under the working pressure, the impulse member (4) under the operational conditions of forward and back movements. The system further includes a control element (9) intended for controlling the distribution of the fluid medium in both operational conditions that element being movably connected with the impulse member (4) and being provided with means for its fixation, in relation to the casing (1), in two controlling positions corresponding to both operational conditions. The fixation means of element (9) in a position providing for the forward movement of the device are constructed as a body (11) movable in relation to the control element (9). The body (11) is so oriented that a part of its surface is subjected to the influence of the fluid medium under the action of which it engages, in one of its positions, into mesh with the casing (1) thus fixing the control element (9) in the axial direction in relation to the casing (1) and, in the other position, provides for mobility of the control element (9) in relation to the casing (1) when switching the device to its back movement operation rational conditions.
(FR)Un dispositif a percussion reversible comprend, a l"interieur de son boitier (1), un organe d"impulsion a mouvement alternatif (4), et est pourvu d"un systeme de distribution d"un milieu fluide qui entraine a l"aide de la pression de travail l"organe d"impulsion (4) en lui imprimant des mouvements en avant et en arriere. Le systeme comprend aussi un element de commande (9) destine a commander la distribution du milieu fluide dans les deux conditions de fonctionnement cet element etant connecte de maniere amovible a l"organe d"impulsion (4) et etant pourvu de moyens de fixation, par rapport au corps (1), dans deux positions de commande correspondant aux deux conditions de fonctionnement. Les moyens de fixation de l"element (9) dans une position de mouvement avant du dispositif se presentent sous la forme d"un corps (11) mobile par rapport a l"element de commande (9). Le corps (11) est oriente de telle sorte qu"une partie de sa surface soit soumise a l"influence du milieu fluide sous l"action duquel il s"engrene dans une de ses positions, avec le corps (1), fixant ainsi l"element de commande (9) en direction axiale par rapport au corps (1), et dans l"autre position, assure la mobilite de l"element de commande (9) par rapport au corps (1) au moment de la commutation du dispositif dans des conditions de fonctionnement de mouvement arriere.
Designated States:
Publication Language: Russian (RU)
Filing Language: Russian (RU)