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. 19, 1980
Filed:
Feb. 23, 1978
James E Smith, Boulder, CO (US);
Carl T Becht, Cincinnati, OH (US);
Senco Products, Inc., Cincinnati, OH (US);
Abstract
An impact device, useful for driving nails, staples and other fastening elements. The driving member is driven by frictional engagement with a rotating high speed flywheel. The device has a safety provision whereby it cannot be actuated until the nose of the device is pressed against a work piece. This action also produces a movement of a support means, such as a roller, towards the rotating flywheel. It should be pointed out that the tool could be designed, in the alternative, with a fixed support means and movable flywheel. Actuation of the trigger moves the driving member into engagement between the support and the rotating flywheel, and the flywheel propels the driving element in a fastener driving direction. The support means is provided with a leaf spring permitting it to yield so that the driving member can pass between the flywheel and the support means while maintaining frictional engagement between the flywheel and the driving member. Inertia of the support means aids in efficient engagement of the flywheel with the driving member. The driver is connected to an elastic member, so that when the tool is lifted from the work, the movable support means is moved away from the fixed flywheel, and the elastic member then retracts the driving member between the flywheel and the support means to a position out of contact therewith. The flywheel can be driven by any of several drive means including compressed air, internal combustion and electric drive means. The preferred embodiment is powered by a single electric motor.