Fluid sprinkling – spraying – and diffusing – Including valve means in flow line – And fluid to gas expansion effecting means
Patent
1975-03-21
1977-04-26
Ward, Jr., Robert S.
Fluid sprinkling, spraying, and diffusing
Including valve means in flow line
And fluid to gas expansion effecting means
239579, 222394, 22240224, B05B 130
Patent
active
040196879
ABSTRACT:
An aerosol spray valve of the type which utilizes a reciprocable plunger moving within a valve housing that is in turn mounted to a cover member. The cover member is adapted to be crimped to a canister and has a dip tube extending from the interior of the valve housing to the bottom of the canister. Pressurized product is forced from the interior of the canister through the dip tube into the valve housing and out of the cover member through a central hole into a sprayhead that is mounted in the hole. An annular elastomeric gasket surrounds the hole and the upper end of the reciprocable plunger forms a valve seat that is spring-biased against the underside of the gasket to prevent pressurized product from emerging. The sprayhead has an associated stem that enters a socket formed in the plunger, the stem being slidably and sealingly engaged through the hole and the passageway in the elastomeric gasket. The stem is imperforate. The socket of the plunger has channel means formed in its interior wall along the vertical length thereof so that there are one or more passageways formed between the outer surface of the stem and the socket to transport the pressurized product. The pressurized product enters at the top of the plunger when the valve seat is unseated from the elastomeric gasket, passing through the passageways to the bottom of the plunger on the interior thereof, and then into the hollow bore of the stem from where it is conveyed to the button of the sprayhead and out to the atmosphere when the button is depressed. The bottom end of the stem is spaced above the bottom floor of the socket or a continuation of the side channels is provided in the floor. The stem may be separable from the button of the sprayhead or may be integral therewith. If separable, the stem is permanently engaged in the socket. The resulting structure provides accurate metering of the pressurized product.
REFERENCES:
patent: R24981 (1961-05-01), Bretz
patent: 2789012 (1957-04-01), Bretz
patent: 2797965 (1957-07-01), McKernan
patent: 2913154 (1959-11-01), Kuffer
patent: 3074601 (1963-01-01), Kuffer
patent: 3098589 (1963-07-01), Graham
patent: 3145011 (1964-08-01), Kappel
patent: 3146922 (1964-09-01), Tuttle
patent: 3206082 (1965-09-01), Green
patent: 3231153 (1966-01-01), Green et al.
patent: 3608830 (1971-09-01), Ramella
Carvellas Perry
Ward, Jr. Robert S.
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