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Title:
AIR MOTION TOOL
Document Type and Number:
Japanese Patent JP3680023
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To surely drive a pair of holding rods to be open and closed just by an air pressure without using an energizing means such as a spring.
SOLUTION: Inside a cylinder 1 in which a pair of the holding rods 4 and 5 are pivoted to a tip, a cylindrical plunger 2 pressing the holding rods 4 and 5 in a closing direction and a core plunger 3 pressing them in an opening direction are slidably provided. Then, a first air chamber A is formed between the cylindrical plunger 2 and the cylinder 1 and a second air chamber B is formed between the rear part of the cylindrical plunger 2 and the core plunger 3. Further, the diameter of the front half part of the core plunger 3 is reduced, a third air chamber C is formed around it and the cylindrical plunger 2 is provided with a ventilation path 2d so as to communicate the third air chamber C with the first air chamber A.


Inventors:
Muromoto, Osamu
Application Number:
JP2001000379761
Publication Date:
August 10, 2005
Filing Date:
December 13, 2001
Export Citation:
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Assignee:
MUROMOTO TEKKO KK
International Classes:
B26B15/00; B25F5/00; F15B15/02; F15B15/14; (IPC1-7): B26B15/00; B25F5/00; F15B15/02; F15B15/14
Domestic Patent References:
JP7205051A
Attorney, Agent or Firm:
鈴木 ハルミ