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:
May. 13, 2008

Filed:

Mar. 02, 2005
Applicant:

Nozomi Takai, Tsuchiura, JP;

Inventor:

Nozomi Takai, Tsuchiura, JP;

Assignees:

Tokyo Seimitsu Co., Ltd., Mitaka-shi, Tokyo, JP;

Tosei Engineering Corp., Tsuchiura-shi, Ibaraki, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B25G 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

The crisscross fulcrum according to the present invention is formed as a continuous member by fabricating one elastic member in the form of a plate. Therefore, the rocking fulcrum member can be obtained as a precise fulcrum member at a low cost with reduced variations in the spring characteristic and can be easily assembled. Additionally, in the present invention, it is preferable that a heat treatment should be performed on the crisscross spring formed by fabricating the one elastic member in the form of a plate. By the heat treatment performed after fabricating for forming the crisscross spring, the spring characteristic is improved.


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