Dispensing – Resilient wall – Supply container delivering to receiving chamber
Patent
1977-07-28
1980-05-06
Spar, Robert J.
Dispensing
Resilient wall
Supply container delivering to receiving chamber
137855, 222214, 222380, 222383, 222477, 239330, 417479, B67D 542
Patent
active
042013178
ABSTRACT:
A manually operable dispenser pump construction wherein liquid product is received from a supply container into an axially compressible bellows. The bellows in turn includes product discharge valve means associated therewith and adapted to move between open discharge and closed storage valve positions by movement of the bellows. In one form of the invention the product discharge valve valve includes a gooseneck portion integral with the bellows and which is moved out of closed position by said axial bellows compression. In another form the product discharge valve includes a generally circular gasket axially disposed between the bellows and its actuation means wherein said gasket is adapted to move into and out of sealing contact with a valve seat dependent on the compression of said bellows.
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patent: 3409184 (1968-11-01), Stengle, Jr.
patent: 3507586 (1970-04-01), Gronemyer
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patent: 3749290 (1973-07-01), Micallef
patent: 3973700 (1976-08-01), Schmidt et al.
patent: 3986644 (1976-10-01), Grogan et al.
patent: 3995774 (1976-12-01), Cooprider et al.
Doherty Robert J.
Silverberg Fred A.
Spar Robert J.
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