Tube extracting mechanism

Details Tube extracting mechanism Tube extracting mechanism

1979-03-08

1981-08-18

Jones, Jr., James L.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

291573C, 294 94, B23P 1904

Patent

active

042838266

ABSTRACT:
A tube extracting mechanism comprising an elongated frame defining an opening in the front end thereof and a longitudinally extending passageway in communication with the opening. A sleeve is slidably supported by the frame for longitudinal movement within the passageway. The mechanism further comprises an expandable jaw supported by the sleeve for longitudinal movement therewith, and a mandrel in communication with the expandable jaw for expanding the jaw. A plurality of teeth extend annularly about and radially outward from the expandable jaw. Each tooth includes an annularly extending central section having a gripping edge generally defining an arc for engaging the interior surface of a tube, and a pair of end sections wherein each end section annularly extends from the central section and includes a tapered edge, wherein the tapered edges radially taper inward to facilitate withdrawing the tube gripping apparatus from the tube. An expansion hydraulic cylinder is provided for imparting longitudinal movement to the mandrel, and pulling hydraulic cylinders are provided for imparting longitudinal movement to the sleeve and expandable jaw.

REFERENCES:
patent: 1964023 (1934-06-01), Armstrong
patent: 2226078 (1940-12-01), Spahn
patent: 2360054 (1944-10-01), Haas
patent: 2697872 (1954-12-01), Armstrong
patent: 3367011 (1968-02-01), Sipher
patent: 3369287 (1968-02-01), Brocheti
patent: 3791011 (1974-02-01), Keys
patent: 4077102 (1978-03-01), Smith

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