Self-tightening drill chuck
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 15, 2011
Grant Date -
Sep 11, 2008
app pub date -
Mar 9, 2007
filing date -
Mar 11, 2006
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A drill chuck has a chuck body, a jaw holder element rotatable on the body and formed with a plurality of angularly spaced guides, and a sleeve element surrounding the holder element and body. Jaws in the guides can be shifted in the guides forward and together on rotation of the holder element in a tightening direction relative to the body and oppositely on rotation of the holder element relative to the body in an opposite loosening direction. Interengaging formations on the sleeve element and on the body limit relative angular movement of the sleeve element on the body between a pair of angularly offset end positions. An annular array of teeth rotationally fixed to the sleeve element can be engaged by a pawl angularly fixed on the holder element. A release ring rotatable the body rearward of the sleeve is rotationally coupled to one of the elements.
First Claim
Other Claims data not available
