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. 18, 1978
Filed:
Jun. 10, 1977
Paul D Engdahl, Costa Mesa, CA (US);
Other;
Abstract
A low-cost accelerometer having auxiliary pointers which hold its peak readings. It is suitable as a portable instrument for vehicle testing, or may be installed in a structure to hold or retain the maximum readings that occurred during an earthquake or other shock. The accelerometer comprises a cantilever-reed-type mass-spring system with an indicating pointer disposed so as to push a pair of light-weight balanced 'tell-tale' or holding pointers which are mounted on light frictional pivots and record or hold the peak deflection of the main pointer. The working parts are mounted in a flat case filled with a damping fluid. Reset knobs for the holding pointers are located on the outside of the case. The frictional torque of their pivots is adjustable from outside. A typical range for the instrument is .+-. 2 g.