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:
Apr. 11, 1989
Filed:
Feb. 11, 1988
Donn R Van Der Schie, Grand Haven, MI (US);
Ermanco Incorporated, Spring Lake, MI (US);
Abstract
A live roller zero pressure accumulation conveyor and brake assembly are described. The brake assembly includes a rotatable drive shaft surrounded by a tubular torque tube. The drive shaft extends into the torque tube and has a diameter such that the cylindrical surface of the drive shaft is capable of frictionally engaging the interior of the torque tube to rotate the torque tube when the drive shaft is rotated, but to slip relative to the torque tube when rotation of the torque tube is restrained. Clamping members surround the torque tube and are movable relative to the exterior surface of the torque tube between a first position in which the clamping surfaces are moved out of contact with the torque tube and the rotating drive shaft rotates the torque tube, and a second position in which the clamping surfaces move into contact with the exterior of the torque tube to restrain the torque tube from rotating with the drive shaft.