Title: Hollow core chucking device

Abstract: The chucking device of the present invention comprises a tapered chuck plug with an elongated slot formed in the tapered end thereof into which a pair of core engaging chuck dogs are mounted. The chuck dogs are normally spring biased into a retracted position within the confines of the chuck plug but can be mechanically actuated to project from their slot outside the confines of the chuck plug to firmly grip the insides of a hollow core.

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Inventors: Obenshain, David Noel (Swanton, MD, US)

Application Number: 719158
Filing Date: 1976-08-31
Publication_date: 1977-08-30
Assignee: Westvaco Corporation (New York, NY)
Primary Class(es): 279/2.24 82/169, 242/575, 242/596.7, 269/48.1
Other Classes:
US Patent Ref:

859492	Jul, 1907	Forsberg	242/68.
1402060	Jan, 1922	Fisher	242/68.
1411292	Apr, 1922	Mueller	242/68.
3430887	Mar, 1969	Elsner et al.	242/68.

Other Refs:
Primary Examiner: Simpson, Othell M.
Assistant Examiner: Bilinsky, Z. R.
Attorney: