The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Nov. 19, 2002

Filed:

Apr. 21, 2000
Applicant:
Inventors:

Yoshiro Yamane, Akashi, JP;

Kazuhiko Takemoto, Kakogawa, JP;

Tadao Yashirodai, Kakogawa, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25D 9/08 ;
U.S. Cl.
CPC ...
B25D 9/08 ;
Abstract

In a conventional impact generator, a great shock is generated when a weight collides with a rotary member, and a rotary shaft of the rotary member and a bearing supporting the rotary shaft receive the great shock. Therefore, it is necessary to employ a bearing having a great load capacity. Furthermore, great vibrations and noises are also generated in the impact generator. A rotary member ( ) is rotatably supported by rotary shafts ( ) and ( ). A weight ( ) is movably held by the rotary member ( ). A shock absorber ( ) for absorbing, by elastic force, a shock generated between the weight ( ) and the rotary member ( ) is provided between the weight ( ) and the rotary member ( ).


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