Tube extracting mechanism

Details Tube extracting mechanism Tube extracting mechanism

1976-06-28

1978-03-07

Jones, Jr., James L.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

B23P 1904

Patent

active

040771024

ABSTRACT:
A mechanism and method for extracting a tube from a tube sheet includes expandable jaws positioned within the inner bore of the tube. An expansion device is connected to a first piston of the extraction mechanism whereby the expansion device expands the jaws into engagement with the inner surface of the tube. The jaws are expanded by providing a fluid at a predetermined pressure to the inner piston. While the fluid pressure is maintained on the inner piston, a second force is generated by supplying fluid under pressure to an outer piston having the jaws connected to an end thereof, whereby the outer piston is moved to extract the tube from its tube sheet.

REFERENCES:
patent: 1506886 (1924-09-01), Clay
patent: 1964023 (1934-06-01), Armstrong
patent: 2697872 (1954-12-01), Armstrong
patent: 3367011 (1968-02-01), Sipher
patent: 3369287 (1968-02-01), Brochetti
patent: 3387353 (1968-06-01), Romero
patent: 3791011 (1974-02-01), Keys
patent: 3916499 (1975-11-01), Frame et al.
patent: 3986246 (1976-10-01), Gemmill

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