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:
Jul. 17, 2007
Filed:
Feb. 18, 2005
Applicants:
Teruyuki Takeda, Nagoya, JP;
Biao Sun, Nagoya, JP;
Inventors:
Teruyuki Takeda, Nagoya, JP;
Biao Sun, Nagoya, JP;
Assignee:
Ubukata Industries Co., Ltd., Aichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01M 1/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A free fall sensor includes an electrically conductive container, an electrically conductive pin having an end inserted into the container, and a movable electrode enclosed in the container, the movable electrode including a coil spring cantilevered on the end of the conductive pin and a weight disposed in an inner space of the coil spring so as to be movable and so as to be prevented from falling off. The weight is a sphere having a smaller diameter than the coil spring.