Title:
WORKING MECHANISM OF RECIPROCATING WORKING MECHANISM IN ELECTRO-HYDRAULIC WORKING TOOL
Document Type and Number:
Japanese Patent JPH07223113
Kind Code:
A
Abstract:
PURPOSE: To provide an electro-hydraulic working tool capable of surely and stably attaching and detaching an opening/closing valve to and from a valve seat.
CONSTITUTION: A guide member 26 having a hole is attached to the inside of the rear opening 24 of the hollow part 25 of an oil piston 23 and the valve stem part 5a of an opening/closing valve 5 is inserted into this guide member 26. At least two kinds of strong and weak springs S1 and S2 are serially provided between the valve stem part 5a and the guide member 26 and a member 28 for preventing pulling out of the springs S1 and S2 is provided on the front end of the valve stem part 5a.
Inventors:
KAMATA AKIRA
KUBO YOSHIYUKI
KUBO YOSHIYUKI
Application Number:
JP3294194A
Publication Date:
August 22, 1995
Filing Date:
February 03, 1994
Export Citation:
Assignee:
ROBUTETSUKUSU KK
International Classes:
B25B25/00; B21D28/24; B23D15/14; B23D29/00; (IPC1-7): B23D29/00; B23D15/14
Attorney, Agent or Firm:
Iwanaga
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