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Patent Searching and Data


Title:
SEAL MECHANISM FOR MOTOR-DRIVEN TOOL
Document Type and Number:
Japanese Patent JP3431497
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To effectively prevent entrance of dust to the internal part of a body housing.
SOLUTION: In this seal mechanism, a packing 18 made of rubber is contained in the whole periphery of a joint part between a gear housing 3 to form a body housing 2 and a gear housing cover 4 and the joint is sealed. A V-shaped valve element 19 is extended to the packing 18 and a protrusion 20 on the tip end thereof makes contact with an air hole with the protrusion closing an air hole 21 to intercommunicate the front and the rear of a partition wall 3a. Meanwhile, a seal retainer 22 and a dust seal are arranged at the through-hole of the slider 12 of a gear housing cover 4 to perform lubrication and seal of the through-part of the slider 12.


Inventors:
Masahiko Ono
Application Number:
JP13047698A
Publication Date:
July 28, 2003
Filing Date:
May 13, 1998
Export Citation:
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Assignee:
Makita Corporation
International Classes:
B25F5/02; B23D29/00; B23D49/16; B25F5/00; B27B19/02; (IPC1-7): B25F5/00; B23D29/00; B27B19/02
Domestic Patent References:
JP957653A
JP55379U
JP5511844U
JP503228B1
Attorney, Agent or Firm:
Yoshiki Ishida