Title: Air-expanded mandrel having means to equalize expansion to obtain concentric chucking

Abstract: A fluid actuated expanding mandrel or internal chuck is provided with means including very stiff springs to cause the expanding members to move outwardly a substantially equal amount, whereby a roll or workpiece is concentrically mounted, despite looseness between the bore of the roll or workpiece and the mandrel or internal chuck. A correspondingly inverted arrangement affords concentric chucking on the outer diameter of solid workpieces.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Crowe, Thomas J. (Rockaway, NJ, US)

Application Number: 971521
Filing Date: 1978-12-20
Publication_date: 1980-10-21
Assignee: Crowe; Thomas J. (Rockaway, NJ)
Primary Class(es): 279/2.07 242/571.1, 279/4.11, 279/66
Other Classes:
US Patent Ref:

3048345	Aug, 1962	Willard	242/72.
3391878	Jul, 1968	Naccara	242/72.
3414210	Dec, 1968	Gaudin	242/72.
3863857	Feb, 1975	Smith	242/72.

Other Refs:
Primary Examiner: Weidenfeld, Gil
Assistant Examiner:
Attorney: