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:
Nov. 17, 1987
Filed:
Feb. 21, 1986
Severino D'Angelo, Laguna Beach, CA (US);
Horiba Instruments Incorporated, Irvine, CA (US);
Abstract
A torque measuring device having dual range load cells is provided featuring high accuracy over a large range of torque measurements. A pair of load cell assemblies act on the torque arm of a dynamometer torque balance. A compliant element is employed to connect the torque arm to a low range load cell assembly and lost motion means are provided by the high level load cell assembly. Low torques imposed on the torque balance cause only the low range load cell to be loaded. The low range load cell assembly is selected to provide high accuracy over the low torque range levels. Once a predetermined threshold torque is applied, the deflection of the compliant element permits the torque arm to engage the high level load cell assembly. Torques beyond the threshold level are determined by summing the measured torques of both load cell assemblies. Several embodiments are described which disclose various means for providing a compliant linkage for the low range load cell assembly and for providing a lost motion coupling for the high range load cell assembly.