Smoking apparatus with capillary tube pressure balance

Details Smoking apparatus with capillary tube pressure balance Smoking apparatus with capillary tube pressure balance

1979-04-26

1980-09-23

Pellegrino, Stephen C.

Tobacco

Tobacco users' appliance

Device used for smoking

131192, A24F 130

Patent

active

042236860

ABSTRACT:
A smoking pipe having a pipe bowl with a smoke tube extending into a volume of filtering liquid in an enclosed reservoir. The shapes and dimensions of the smoke tube and liquid reservoir are selected in relation to the volume of liquid so that when the pipe is substantially upright, the end of the smoke tube extends into the liquid. A tubular pipe stem and associated valve extend from a reservoir port which is above the liquid top surface when the pipe is substantially upright. The physical characteristics of the smoke tube are related to the physical characteristics and volume of the filtering liquid and the shape and volume of the reservoir, so that when the pipe is inverted and the valve closes the passage through the pipe stem, there is substantially zero net force on a volume of liquid within the smoke tube due to the pressure differential across that volume, surface tensions between the liquid and the tube and gravitational force on that volume.

REFERENCES:
patent: 1249984 (1917-12-01), Meissner
patent: 2475472 (1949-07-01), Brown
patent: 4036240 (1977-07-01), Murray, Jr.

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