Tool driving or impacting – Impacting devices – Selective axial direction of impact
Patent
1975-07-08
1976-12-07
Leppink, James A.
Tool driving or impacting
Impacting devices
Selective axial direction of impact
E21B 100
Patent
active
039957020
ABSTRACT:
A device has a cylindrical housing with a pointed front portion, which accommodates a striker separating the inner space of the housing to form a front and rear active chambers. The striker is provided with an open space at the rear end face thereof which mounts an air distributing branch connection threaded in the housing to be axially displaceable therein for reversing the device motion and adapted to admit compressed air to the active chambers and discharge it to the atmosphere therefrom thus reciprocating the striker which applies impacts to the housing. The air distributing branch connection has pipes arranged coaxially and forming longitudinal passages, of which the central passage serves to admit compressed air to the active chambers, while the annular passage between the pipes is used to discharge spent air from the active chambers.
REFERENCES:
patent: 3727701 (1973-04-01), Sudnishnikov et al.
patent: 3756328 (1973-09-01), Sudnishnikov et al.
patent: 3763939 (1973-10-01), Sudnishnikov et al.
Gurkov Konstantin Stepanovich
Kamensky Veniamin Viktorovich
Klimashko Vladimir Vasilievich
Kostylev Alexandr Dmitrievich
Smolyanitsky Boris Nikolaevich
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