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. 01, 1980
Filed:
Oct. 18, 1977
Kenichi Ushiku, Tokaimura, JP;
Akira Hasegawa, Katsuta, JP;
Hitachi, Ltd., both of, JP;
Nissan Motor Company, Limited, both of, JP;
Abstract
An impact detecting device of the type including a casing; a movable member which is housed in the casing and movable substantially along a straight line relative to the casing, when the device is subjected to an impact; a spring for elastically loading the movable member during its movement in the direction against the direction of the movement of the movable member; and a switch adapted to be closed, when the movable member is moved a given distance against the action of the spring. In this device, there is provided a spiral guide which engages the movable member during its movement so as to rotate the movable member, whereby part of energy to be imparted to the casing and movable member due to impact upon collision is consumed for the rotation of the movable member, so that an extent of movement of the movable member may be shortened.