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. 11, 2025
Filed:
Jun. 26, 2020
Lord Corporation, Cary, NC (US);
Timothy Kubat, Fairview, PA (US);
LORD Corporation, Cary, NC (US);
Abstract
Torque is applied to an inner member of a torsional coupling. The first stage (low torque) has a bonded part in series with a set of compression style coil springs. The torsional stiffness of the bonded part is approximately 25% of the resulting torsional stiffness provided by the coil springs. In the second stage (high torque), tangs on the inner member engage with a sprocket plate, transferring torque to the coil springs. The coil springs are held in place by a unique geometry on the sprocket plate and spring holders, which prevent metal-to-metal contact between the coil springs and upper and lower housing portions of the torsional coupling. Surface effect damping occurs at very high torques when the rubber molded around the tangs on the inner member rub on bumps formed on the lower housing portion. A thrust bearing reacts axial forces and eliminates metal-to-metal contact.