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. 02, 1993

Filed:

Jan. 11, 1993
Applicant:
Inventors:

Takeshi Shiotani, Tokyo, JP;

Kouichi Miyamoto, Tokyo, JP;

Norifumi Nakamura, Tokyo, JP;

Assignee:

Ryobi Limited, Hiroshima, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B27B / ; B23D / ;
U.S. Cl.
CPC ...
834713 ; 83473 ; 834771 ; 83490 ; 83699 ;
Abstract

A circular saw unit capable of changing an angle for cutting a workpiece comprises a base member, a rotary table which is rotatably mounted on the base member and on which the workpiece is placed, a hinge having one end supported to the rotary table and, a bracket member or support arm member pivotally connected to the other end of the hinge. The hinge comprises a lower hinge member having one end supported to the rotary table and an upper hinge member having one end pivotally connected to the other end of the lower hinge member and having the other end connected pivotally to the bracket member. The hinge may have a quadrilateral link mechanism for restricting a lower limit position of the circular saw and for assuring a horizontal movement of the circular saw during a cutting operation.


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