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.

Patent No.:

US 7128504 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 31, 2006

Filed:

Mar. 03, 2004
Applicant:

Kuo-shen Wu, Taipei, TW;

Inventor:

Kuo-Shen Wu, Taipei, TW;

Assignee:

East of WU Co., Ltd., Taipei, TW;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23C 1/16 (2006.01); B23C 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

An improved spring tracer for duplicating machine for punched and laser keys comprising a longitudinal spindle suspended from an end of a synchronous lateral lever having the other end laterally connected to a longitudinal shaft for a duplicating tool in parallel with the longitudinal spindle, which can be longitudinally slidably secured on a body portion in accordance with a common longitudinal axis of the longitudinal spindle; a spring-loaded tracer engaged in the inner lower end of the longitudinal spindle for biasing a tracer stylus against an original punched or laser key by means of the spring force for tracing the depths of the key teeth of the original punched key in accordance with the said common longitudinal axis; and a regulating sleeve rotatably secured at the outer lower end of the longitudinal spindle for regulating the elevation of the spring-loaded tracer in accordance with the said common longitudinal axis, in order that a regulating action, a securing action and a biasing action can be effected in a common longitudinal axis, so as to increase the duplicating precision and simplify the construction of the duplicating machine for punched and laser keys.


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