Device for permitting controlled emission of volatile substances

Details Device for permitting controlled emission of volatile substances Device for permitting controlled emission of volatile substances

1986-04-18

1987-04-28

Yuen, Henry C.

Fluid sprinkling, spraying, and diffusing

Slow diffusers

With wick or absorbent means removing liquid from holder

239 47, 251212, A24F 2500

Patent

active

046607641

ABSTRACT:
A device for permitting controlled emission of a volatile substance, in particular an air-treating agent. The device comprises a container having an annular ledge with two recesses on opposite sides and a frustro hemispherical hood open at the top, that fits on to the container. The hood has two studs protruding on opposite sides of its inner wall. Inside the hood are situated two shutters that are moveable in relation to each other on relative rotation between the container and the hood by means of slots, which are moved by the studs, to close or open the opening to an infinitely variable degree.

REFERENCES:
patent: 214394 (1879-04-01), Ball
patent: 2508615 (1950-05-01), Lukes
patent: 2513272 (1950-07-01), Bowen
patent: 2898080 (1959-08-01), Smith
patent: 3727840 (1973-04-01), Nigro
patent: 4274437 (1981-06-01), Watts
patent: 4293095 (1981-10-01), Hamilton et al.
patent: 4323193 (1982-04-01), Compton et al.

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