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:
Sep. 11, 2001
Filed:
Apr. 09, 1998
Stephen C. Dassoulas, Baltimore, MD (US);
Richard C. Nickels, Jr., Hampstead, MD (US);
Black & Decker Inc., Newark, DE (US);
Abstract
A reciprocating saw,comprises an output shaft,mounted for reciprocal motion in a housing,. A counterweight,is mounted in the housing for reciprocal movement relative to the output shaft. A first drive,is connected between a motor and the output shaft for reciprocally driving the output shaft. A second drive,is connected between the motor,and the counterweight for reciprocally driving the counterweight. The second drive,preferably comprises a pivot arm,pivotally mounted about an axis transverse to the output shaft for receiving at a first location a reciprocating input in a first direction,and for producing at a second location a reciprocating output in a second direction,different from the first direction. The first and second drives provide a compact, low vibration, relatively simple, counterbalanced drive train for the saw.