Chucks or sockets – Socket type – Obliquely guided reciprocating jaws
Reexamination Certificate
2003-09-22
2008-12-30
Bryant, David (Department: 3726)
Chucks or sockets
Socket type
Obliquely guided reciprocating jaws
C279S125000, C279S140000, C279S902000
Reexamination Certificate
active
07469908
ABSTRACT:
A power drill chuck comprising a drill body, a nut, jaws, a front sleeve, a rear sleeve, a nut sleeve, and a rolling body, wherein jaws are mounted in inclined holes in the drill body. The nut thread constitutes a thread drive with the thread of the jaws. The front sleeve is connected with the drill body, wherein the nut sleeve is connected to the nut and extends backwards in a rear end having a plurality of projecting keys. The rear sleeve is mounted with and rotates relative to the nut sleeve and the drill body. The rear sleeve includes annular holes and a plurality of keys on its inner end surface. A positioning sleeve is connected to the drill body to position the rear sleeve on the drill body. A plurality of impact members are provided with a plurality of elastic deformation portions and projecting keys.
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Bryant David
Gates Eric A
Nixon & Peabody LLP
Shangdong Weida Machinery Co., Ltd.
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