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:
Dec. 29, 1992
Filed:
Sep. 05, 1991
Peter Kunz, Gossau, CH;
Mettler-Toledo AG, Greifensee, CH;
Abstract
Weighing apparatus of the electromagnetic load compensation type includes a ferromagnetic yoke member (19), that is secured at a single point to the frame (3), thereby a permit the frame to be formed of a non-ferromagnetic material, such as aluminum, having a different coefficient of expansion than the yoke member. Preferably the yoke member is secured to the frame by a single screw (33,103) arranged at the axis of symmetry of the yoke member. Owing to the small contact surface between the yoke member and the frame, the production of temperature-responsive forces which would otherwise stress or distort the apparatus to adversely affect the accuracy of the weighing operation is avoided.