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:
Feb. 26, 1980
Filed:
Nov. 13, 1978
Marcus H Collins, Akron, OH (US);
Kiritkumar R Patel, North Royalton, OH (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
A coupling includes a rim assembly, a drum assembly rotatable relative to the rim assembly about an axis of rotation, a pneumatically expandable tube having an exterior surface attached to the rim assembly, a plurality of spaced apart lugs disposed on the exterior surface of the tube element and a plurality of shoe members each of which includes first and second spaced apart parallel surfaces. Each of the shoe members includes means on the first surface thereof which is connectable with one of the lugs on the tube element to support the first surface of the shoe member contiguous to the exterior surface of the tube member. The shoe members includes a plurality of friction pads attached thereto which are movable in a radial direction between a first position in which the friction pads engage with the drum assembly to couple the rim and drum assemblies upon expansion of the tube element and a second position in which the friction pads are spaced apart from the drum assembly to permit relative rotation between the drum and rim assemblies. A plurality of projections are disposed on the first surface of each of the shoe members. The projections are disposed substantially parallel to the axis of rotation and each has a length which is at least 80% of the width of the shoe member when taken parallel to the axis of rotation. A plurality of parallel corresponding indentations are disposed on the exterior surface of the tube member. Each of the indentations on the tube element is adapted to receive a corresponding projection on the shoe member therein to enable the shoe members to transfer torque through the tube element to the rim assembly. The projections on the shoe members and indentations on the tube element all have a substantially acruate cross-sectional configuration to eliminate stress concentrations in the tube element when torque is transferred from the shoe members through the tube element to the rim assembly.