Title:
IMPACT MACHINE
Document Type and Number:
Japanese Patent JPS5282602
Kind Code:
A
Abstract:
To facilitate the return of a percussion tool by the action of the striking mass, namely, a double-acting piston, without damage to the machine body, the tool is held by a casing attached to the body and the tool. The latter piston defines a chamber with a confronting face of the casing, the chamber being supplied with a liquid under pressure through a check valve. The chamber is connected to a reservoir by a pressure-relief valve.
Inventors:
ROJIE MONTABERU
Application Number:
JP13130076A
Publication Date:
July 11, 1977
Filing Date:
November 02, 1976
Export Citation:
Assignee:
MONTABERT ROGER
International Classes:
B25D9/12; B25D17/08; B25D17/24; E21B1/38; (IPC1-7): B25D9/12; E21C3/20