Smoking tube with check valve

Details Smoking tube with check valve Smoking tube with check valve

1975-09-11

1977-06-28

Pellegrino, Stephen C.

Tobacco

Tobacco users' appliance

Device used for smoking

A24F 130

Patent

active

040319059

ABSTRACT:
Quite a large cylindrical tube for a mouthpiece tube and a smaller stem for supporting a small bowl extend upwardly from different portions of a hollow base. The hollow base functions as a reservoir, and the base and the lower portions of the stem and the mouthpiece tube are filled with water. A plastic ball within the mouthpiece tube helps control the draw of the pipe. The plastic ball is the sealing member of the check valve that prevents rapid flow of water from the mouthpiece tube to the stem when inhalation is stopped abruptly. The port of the check valve is a hole that is eccentric within the bottom of the mouthpiece tube. The eccentricity provides a desirable amount of leakage for slowly equalizing the level of water in the mouthpiece tube and the stem.

REFERENCES:
patent: 1967438 (1934-07-01), Hartzes
patent: 3863646 (1975-02-01), Kahler
patent: 3882875 (1975-05-01), Frost

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