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:
Oct. 13, 1998
Filed:
Feb. 27, 1997
Massimo Alberto Giacometti, Valmadrener, IT;
Reimund Becht, Hunfelden, DE;
Black & Decker Inc., Newark, DE (US);
Abstract
A powered jig saw comprises a holder for a saw blade at the lower end of the reciprocating drive shaft. The holder is adjustable, by rotation of an actuating section, between an open position and a closed position for holding the saw blade. The actuating section comprises, in the interior of an upwardly open tube portion of the drive shaft, an engagement surface which, for the purpose of rotating the actuating section, engages with a working surface of a rotatable adjustment device which is stationary when the drive shaft is driven. The upper end portion of the drive shaft is mounted, so as to be capable of axial displacement, in a guide bush, above which there is a holding device of the adjustment device, in which holding device there is fixed a downwardly extending element comprising the working surface. A pendulum mechanism serves to generate a swivelling movement of the drive shaft. The guide bush, for the purpose of accommodating the swivelling movement of the drive shaft generated by the pendulum mechanism, is pivotally mounted within the housing and the holding device is supported on the guide bush and held in engagement therewith by spring force. In this way, tilting or swivelling of the engagement surface of the actuating section relative to the working surface of the adjustment device during the pendulum operation is prevented.