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:
Mar. 17, 1992
Filed:
May. 22, 1990
Richard A Hanson, Woodinville, WA (US);
Other;
Abstract
Proofmass suspension assembly for use in accelerometers and the like. The assembly includes a support element, a responsive element mounted on the support element for response to an externally applied stimulation, a first crystal connected between the responsive element and the support element, a second crystal connected to one of the elements, and a compensation arm connected to the second crystal and to the other of said elements, whereby an externally applied stimulation will place one of the crystals in compression and the other of the crystals in compression. The compensation arm has a thermal expansion property such that any difference in thermal expansion between the responsive element and the first crystal produces translation but no rotation of the responsive element relative to the support element.