Title:
【発明の名称】エアハンマー
Document Type and Number:
Japanese Patent JPH06503622
Kind Code:
A
Abstract:
PCT No. PCT/EP92/02435 Sec. 371 Date Jun. 22, 1993 Sec. 102(e) Date Jun. 22, 1993 PCT Filed Oct. 23, 1992 PCT Pub. No. WO93/08364 PCT Pub. Date Apr. 29, 1993.A pneumatic hammer is provided which includes a working piston (16) movable in a working cylinder (22) and defining therewith front and rear cylinder working chambers (23, 24, respectively). The working piston (16) impacts upon an anvil (15) to drive a drill bit (12) through utilizing a source of compressed air. An adjusting mechanism (37) adjusts the length of the return stroke of the working piston (16) in dependence upon the supply pressure of the compressed air.
Inventors:
Klemm, Ginter Willie
Application Number:
JP50746192A
Publication Date:
April 21, 1994
Filing Date:
October 23, 1992
Export Citation:
Assignee:
Ing Ginter Kremball Technik Game Behr
International Classes:
B25D9/26; E21B1/32; E21B4/14; (IPC1-7): E21B4/14
Attorney, Agent or Firm:
Nobuo Kono