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:
Aug. 08, 1989
Filed:
Oct. 14, 1988
Robert B Houck, Cincinnati, OH (US);
Arnold L McGuffey, Cincinnati, OH (US);
Sencorp, Cincinnati, OH (US);
Abstract
An improved flywheel for an electromechanical tool such as a nailer or stapler. The tool is provided with a blade-like driver which is frictionally moved through a working stroke by an electrically driven flywheel, the driver being squeezed between the flywheel and a support element such as a counterrotating flywheel, a low inertia roller, or the like. The flywheel has a peripheral working surface with parallel edges. The working surface of the flywheel makes a line contact with the driver during the driving stroke. The flywheel is provided with at least one groove formed in and extending along its working surface. Throughout its length the groove is angularly related to the parallel edges of the flywheel working surface so that the groove traverses the line contact between the driver and the flywheel during each working stroke. This more efficiently prevents build-up of foreign material on the driver and flywheel and produces less and more uniform wear of the driver and flywheel. When two flywheels are used, the second flywheel may be provided with a similar wiping groove.