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:
May. 18, 1982
Filed:
Apr. 18, 1980
Ferdinand Utner, Regensburg, DE;
Harald Vetter, Regensburg, DE;
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Abstract
A bridge circuit consisting of two or more resistance strain gauges is formed on a synthetic layer on which a resistance layer and a metal layer provided for the terminal elements are applied. The corresponding patterns are etched into the metal and into the resistance layer. Balance surfaces consisting of materials with a temperature coefficient different from that of the resistance layer are connected in series to the resistance strain gauges. By changing the resistance of the balance surfaces, the circuit is balanced in terms of symmetry, in terms of the temperature coefficient of the resistance layer, and in terms of the temperature coefficient of the modulus of elasticity of the test object.