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. 11, 1994
Filed:
Mar. 01, 1993
Alexander S Gotman, Santa Monica, CA (US);
Other;
Abstract
A powered hand-held rotary tool adapted for preventing an externally manifested reaction torque upon the hand of an operator consists of a housing, a rotor adapted to be driven for rotation relative to the housing, and a planetary differential mechanism having a sun gear coaxial with and driven from the rotor, planetary gears, and a ring gear. The ring gear is rotatable relative to the housing. A first output gear is coaxial with the sun gear and rotatably driven by the planetary gears. An additional output gearing is rotatably supported from the housing on an axis that is laterally offset from the axis of the rotor, and is drivingly engaged by the ring gear. Rotation of the additional gearing in one direction relative to the housing is inhibited.