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:
Mar. 10, 1992
Filed:
Mar. 01, 1991
Black & Decker Inc., Newark, DE (US);
Abstract
A hand-held power tool with a rotary driven tool, in particular a planer or a circular saw, is arranged so that on switching off the drive, which can be switched on and off by means of a trigger (15), a brake element (34), which is ineffective when the drive is switched on, is brought into braking engagement with a brake part (51) rotatingly driven by the drive. The tool comprises a safety element (21) which co-operates with the trigger (15) and which can be displaced between a safety position in which the trigger (15) cannot be moved to switch on the drive, and a release position in which the trigger (15) can be moved into the position to switch on the drive. The safety element (21) is urged by spring pressure towards the safety position and is held in the release position when the trigger (15)L is in the switch-on position. The safety element (21) is coupled mechanically with the brake element (34) so that in the release position of the safety element the brake element is not in the braking engagement, and in the safety position it is in braking engagement.