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:
Feb. 13, 1990
Filed:
Mar. 16, 1987
Shih-Ying Lee, Lincoln, MA (US);
Setra Systems, Inc., Acton, MA (US);
Abstract
A compact force transducer has at least one flexible beam mounted at one or both its ends to a force summing member or members. The force-to-be-measured is applied to the force summing member along a first axis generally transverse to the beams to deform the beam elastically, without overstressing, through a displacement d. A sensor member carries a conductive surface and is coupled to the beam member. In a parallelogram form, there are a parallel pair of beam members extending between two force summing members and a sensor member is secured to each beam member at or near its point of inflection. One sensor member includes multiple arms that sandwich the other sensor member to produce a linear, push-pull mode of operation. In a low cost cantilevered beam form, the sensor is coupled to the beam at the force summing member in a parallel, spaced relationship. In a hybrid push-pull form, the transducer uses a two beam parallelogram construction with cantilevered sensors (1) coupled rigidly to each beam adjacent one force summing member with a hinge coupling between the beam and this one force summing member, and (2) extending generally in a parallel spaced relationship with respect to an associated one of the beams.