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:
May. 26, 1981
Filed:
Jan. 09, 1979
George Almond, Trumbull, CT (US);
Empire of Carolina, Inc., New York, NY (US);
Abstract
The driving, braking and freewheeling device for tricycles has a simplified structure including a central circular disc driven by a pedal-operated shaft. Cams, symmetrically positioned around the periphery of the central disc, oppose brake shoes which form a segmented ring within the hub of the vehicle's driven wheel. The inner surfaces of the brake shoes are contoured to act as cam followers. Application of torque to the drive shaft in a first direction forces the brake shoes outwardly until engagement is made with an inner surface of the wheel causing the wheel to rotate. When no torque is applied to the drive shaft there is no cam action to force the brake shoes outwardly against the wheel thus permitting the wheel to rotate freely. When the drive shaft is torqued in the opposite direction, the cams force the brake shoes to engage the inner surface in opposition to the rotation of the driven wheel and effect a braking action.