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:
Nov. 16, 1993
Filed:
Sep. 09, 1992
Daijiro Nakamura, Hyogo, JP;
Jacobs Japan, Inc., Aichi, JP;
Abstract
In construction of a keyless tool chuck in which clamping torque is transmitted from a manually rotatable operation sleeve on a chuck body to tool clamping jaws in the chuck body via a power transmission unit including a cycloidal gear arrangement, an elastic impulsion sleeve is inserted between the operation sleeve and the chuck body so that elastic compressive deformation of the impulsion sleeve at forced rotation of the operation sleeve causes impulsive meshing engagement in the cycloidal gear arrangement to provide impulsive clamping force on a tool clamped by the jaws. Resultant clamping force is at least twice as large as that provided by a conventional cycloidal gear arrangement only.