B - Operations – Transporting – 25 – D
Patent
B - Operations, Transporting
25
D
121/21
B25D 11/00 (2006.01) B25D 16/00 (2006.01) B25D 17/24 (2006.01)
Patent
CA 1057603
ABSTRACT OF THE DISCLOSURE An an electropneumatic hammer including an exciter piston and a percussion piston reciprocally displaceable within the bore of a guide cylinder, a sleeve-like clamping member is secured in an axially stationary position within the bore of the guide cylinder with the percussion piston passing through the clamping member. If there is no tool in the hammer and under certain other operating conditions, an axially displaceable tubular member located within the bore and laterally enclosing the clamping member, presses the clamping member inwardly into gripping contact with the percussion piston.
260904
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