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.:
Date of Patent:
Nov. 18, 2003
Filed:
Apr. 29, 2002
Toshihiro Ichikawa, Sunto-gun, JP;
Naoto Adachi, Sunto-gun, JP;
Tokai Corporation, Tokyo, JP;
Abstract
The present invention intends to provides a piezoelectric ignition lighter capable of avoiding misuse by children but maintaining excellent operability for normal users without unreasonably increasing actuation load at the initial ignition operation. For this end, the piezoelectric ignition lighter has a valve mechanism, a nozzle and a piezoelectric mechanism at the top of a lighter body and ignites by actuation of an actuation cap integrally molded of polyacetal resin with torsion plates The torsion plates are separated from the upper end surface of the lighter body by a gap equal to about 60%˜90% of the actuation stroke in the non-actuated condition to provide a normal (light) actuation load at the initial actuation stage. After engagement of the torsion plates with the upper end surface of the lighter body resilient load of the torsion plates is added to normal load, thereby increasing the actuation load.