Differential pitch thread clamp assembly

Details Differential pitch thread clamp assembly Differential pitch thread clamp assembly

1991-08-15

1992-11-03

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Segmented female mold and mold clamping means

100219, 425595, 425DIG221, B30B 1500

Patent

active

051607506

ABSTRACT:
A clamp assembly for selectively friction clamping a member with respect to a column includes inner and outer threaded portions positioned concentrically around the column and within a housing attached to the member. The inner and outer threaded portions are threaded together to transfer force therebetween. A sealed chamber between the inner and outer threaded portions is selectively pressurized to cause an inner surface on the inner threaded portion to displace inwardly onto an outer surface of the column and the outer threaded portion displacing outwardly to provide frictional resistance to longitudinal movement of the member with respect to the column. The inner thread portion and the outer thread portion have a thread pitch difference to substantially compensate for strain deformation occurring thereupon.

REFERENCES:
patent: 4509910 (1985-04-01), Petersen
patent: 4846614 (1989-07-01), Steinbock
patent: 4907959 (1990-03-01), Hauch

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