Dispensing valve with tubular seal

Details Dispensing valve with tubular seal Dispensing valve with tubular seal

1987-08-26

1989-01-17

Shaver, Kevin P.

Dispensing

With packing-type seal for outlet

251214, 277165, 222559, F16K 4100

Patent

active

047983140

ABSTRACT:
A seal for a longitudinally movable element such as a needle valve. The seal has an upper disc-like portion which is secured in place and a lower tubular extension. The tubular extension has an internal tapered bore such that the lower end of the bore is narrower than the upper end of the bore. The lower end of the bore intimately grips the outer surface of the longitudinally movable element and stretches and retracts with its movement.

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patent: 2964246 (1960-12-01), Alholm et al.
patent: 3048362 (1962-08-01), Scarborough
patent: 3073490 (1963-01-01), Dahl et al.
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patent: 3420262 (1969-01-01), O'Neill, Jr.
patent: 3463363 (1969-08-01), Zelna
patent: 3469825 (1969-09-01), DuBois
patent: 3945393 (1976-03-01), Teatini
patent: 3997141 (1976-12-01), Baumann
patent: 4285498 (1981-08-01), Nightingale
patent: 4392633 (1983-07-01), Van Winkle

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