Sealing and closure structure for a spray dispensing device

Details Sealing and closure structure for a spray dispensing device Sealing and closure structure for a spray dispensing device

1975-03-14

1977-05-17

Knowles, Allen N.

Dispensing

With discharge assistant

Fluid pressure

2224007, 222545, 239367, 239397, 137322, B65D 8300

Patent

active

040237184

ABSTRACT:
A spray dispenser including a hollow casing, having sockets in each of which a pair of O-ring seals is mounted. A ball valve is urged toward one of the O-ring seals of each socket. A housing is removably mounted in the casing. Hollow lugs on the housing each having a cylindrical outer face are received inside O-ring seals in sealing relation therewith. Each lug unseats the associated ball valve. When the housing is removed, the ball valve seats against one O-ring seal when the housing is removed from the casing while the lug is in sealing engagement with the other O-ring seal. Compressed air and liquid under pressure are directed through the sockets to a dispensing valve member on the housing, and the pressure need not be released when the housing is removed.

REFERENCES:
patent: 3498313 (1970-03-01), Belich
patent: 3604602 (1971-09-01), Lee
patent: 3650479 (1972-03-01), Liedberg
patent: 3705689 (1972-12-01), Lee

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