Valves and valve actuation – With correlated flow path – With mounting or support
Patent
1993-05-06
1996-07-30
Schwadron, Martin P.
Valves and valve actuation
With correlated flow path
With mounting or support
2511499, 251357, F16L 2900
Patent
active
055404138
ABSTRACT:
Described is a set of improvements and added features to the commercial article a nozzle to connect a pressurized fuel carrying hose to a standardized aircraft fueling adapter. The adapter has a spring loaded poppet located centrally in its entrance opening; when that poppet is pushed inward by a poppet on the nozzle fuel can flow into the aircraft tank through an annular opening around both. The nozzle's job is to be easily secured to the adapter in a leaktight manner, then to push the poppets toward the interior of the adapter, and finally to retract, all without any possibility of a fuel leak by mis-assembly or maloperation, in minimum time and often in darkness. The improvements under this invention incorporate usability at lower temperatures, provisions to prevent excessive weight and length of nozzle, making the principal sealing member more easily replaced (with only the fingers), showing the operator when flow of fuel has stopped, and incorporate other changes from field experience having to do with making maintenance and overhaul adjustment-free operation more foolproof on this complex mechanism.
REFERENCES:
patent: 2679407 (1954-05-01), Badger, Jr.
patent: 4030524 (1977-06-01), McMath et al.
patent: 4567924 (1986-02-01), Brown
patent: 5273071 (1993-12-01), Oberrecht
Ekstrand Roy A.
Lee Kevin L.
Schwadron Martin P.
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