Method of assembling a coupling

Details Method of assembling a coupling Method of assembling a coupling

1976-11-03

1978-08-15

Lanham, C.W.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

29407, 29436, 251 77, 251330, 403138, 403146, 403166, B23P 1500, F16K 3150

Patent

active

041061705

ABSTRACT:
A method of limiting backseat loading on a valve stem moved between a lower closed position and an upper open position engaging the backseat by an actuator having an upper stop position wherein the method includes the steps of setting a variable force transmitting coupling to a predetermined loading between a bearing surface and a gauging surface thereon, connecting the coupling to the valve stem in the lower closed position, lowering the actuator from the upper stop position, connecting the coupling to the actuator, raising the actuator to the upper stop with the backseat being below the upper open position, and increasingly connecting the coupling to the valve stem and the actuator until the backseat is engaged and the predetermined loading exceeded as ascertained by separation of the gauging surface from the bearing surface.

REFERENCES:
patent: 3024403 (1962-03-01), Safford
patent: 3107417 (1963-10-01), Jaquish, Jr. et al.
patent: 3342451 (1967-09-01), Matousek
patent: 3554483 (1971-01-01), Kuwik et al.

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