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:
Jul. 02, 1996
Filed:
Nov. 04, 1994
Gregory Fossella, Osterville, MA (US);
Great Bay Tool Corporation, Hyannis, MA (US);
Abstract
A keyless chuck assembly for a hand-held drill includes a housing, three jaws for gripping a drill which is to be turned by the drill chuck assembly. The jaws are retained in the assembly and confined to radial motion with respect to the drive shaft by means of T-shaped guide slots in the bottom of the drive shaft and cooperating T-shaped ribs on the tops of the jaws. The jaws have a gripping surface and a cam surface. A rotatable adjusting ring engages the jaws to move them in the radial direction to secure and release the drill bit. The jaws can include a resilient material between the gripping surface and the cam surface to allow the chuck jaws to more securely grip the drill bit. A locking mechanism prevents rotation of the ring which would allow the jaws to open.