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. 15, 1991
Filed:
May. 14, 1990
Anthony J Sanders, Newton Aycliffe, GB;
Black & Decker Inc., Newark, DE (US);
Abstract
A power drill has a mode changing mechanism enabling the drill to be operated selectively in a hammer mode and a non-hammer mode. Pivotally mounted upon an internal partition of the drill is a mode changing mechanism comprising a first rigid limb and a second limb consisting of a leaf spring located in side-by-side relationship with the first limb. The mechanism is pivotable into a first position in which the rigid limb is directly behind the output shaft of the drill so preventing rearward movement of the shaft and enabling the drill to operate in a non-hammer mode, and a second position in which the leaf spring is directly behind the output shaft so allowing rearward movement of the shaft and enabling the drill to operate in a hammer mode.