Manual seal coupler

Details Manual seal coupler Manual seal coupler

1993-11-04

1994-12-06

Schwadron, Martin P.

Valves and valve actuation

Mechanical movement actuator

Screw

13761415, 13761419, 13761421, F16L 3728

Patent

active

053703596

ABSTRACT:
A coupler for connecting the service port of a refrigeration fluid-containing system to an exit conduit has a stem threadably for axial movement within the coupling body between a first open position when fully advanced and a second closed position when fully retracted. A plunger axially extends from sealing means in the stem into a service port collar and unseats spring biased sealing means, permitting passage of refrigeration fluid, when the stem is in a substantially fully advanced position and the service port of a refrigeration fluid-containing system is positioned in a service port collar. When the stem is threadably retracted from a substantially fully advanced position, the plunger assumes a retracted position insufficient to unseat the spring biased sealing means and thereby prevents passage of refrigeration fluid.

REFERENCES:
patent: 1762178 (1930-06-01), Lear
patent: 2594539 (1952-04-01), Brown
patent: 3733048 (1973-05-01), Hiszpanski
patent: 3791412 (1974-02-01), Mays
patent: 4527587 (1985-07-01), Fairlamb
patent: 5139049 (1992-08-01), Jensen et al.
patent: 5244010 (1993-09-01), Barjasteh et al.

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