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. 20, 2002
Filed:
Oct. 18, 2000
Nobuyuki Izumisawa, Tokyo, JP;
Kabushiki Kaisha Shinano Seisakusho, Tokyo, JP;
Abstract
A ratchet wrench includes a handle and a head. The handle has a motor accommodated within. The head is provided with a ratchet mechanism having a rotary tightening member which is to be rotated by drive power from the motor. A pin extends in a transverse direction with respect to the axis of the handle so as to connect the head with the handle. A crankshaft is connected to an output shaft of the motor. A crankpin of the crankshaft is rotatably fitted into a first drive bush. The first drive bush is fitted into a first drive member such that the first drive bush is slidable in the transverse direction. The first drive member is connected to the pin in such a manner that the first drive member is rotatable about the pin and slidable along the pin. A second drive member is connected to the pin in such a manner that the second drive member is rotatable about the pin and slidable together with the first drive member along. the pin. The second drive member is fitted into a second drive bush so as to be slidable in a direction parallel to the axis of the head. A yoke is connected to the second drive bush in such a manner that the yoke is swingable relative to the second drive bush and is connected to the rotary tightening member via the ratchet mechanism.