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. 28, 2012
Filed:
Nov. 02, 2009
David C. Tomayko, Ellicott City, MD (US);
Qiang Zhang, Lutherville, MD (US);
Mark R. Poetzl, Rising Sun, MD (US);
Stephen A. Debellius, New Freedom, PA (US);
David C. Tomayko, Ellicott City, MD (US);
Qiang Zhang, Lutherville, MD (US);
Mark R. Poetzl, Rising Sun, MD (US);
Stephen A. Debellius, New Freedom, PA (US);
Black & Decker Inc., Newark, DE (US);
Abstract
A power tool with a housing, a transmission and a switch mechanism. The switch mechanism has an actuator, a rail, a switch and first and second springs. The actuator is non-rotatably but slidably coupled to the housing for movement along a longitudinal axis of the transmission between a plurality of positions to selectively engage one or more members of the transmission at each of the positions such that the transmission operates in one of a plurality of different overall speed ratios. The rail is fixedly coupled to the actuator and is received through the switch such that the switch is slidably mounted on the rail. The first and second springs are configured to bias the switch relative to the actuator in different directions.