Filter for tobacco smoke

Details Filter for tobacco smoke Filter for tobacco smoke

1975-01-27

1977-11-22

Michell, Robert W.

Tobacco

Tobacco users' appliance

Supports

131 10R, A24D 104

Patent

active

040591212

ABSTRACT:
A tobacco smoke filter comprising a single filter element consisting wholly of a plurality of randomly-oriented non-crimped smooth-surfaced solid fibers of thermoplastic polymeric non-absorbent material, each of the fibers having a uniform diameter less than about 5 microns. The filter element has a generally circular cross-section taken across the intended flow path of the tobacco smoke and a diameter substantially equal to the diameter of a tobacco smoke flow path. The weight of polymeric material exceeds about 6 mg and the filter element has a pressure drop thereacross of from 1 to 10 inches of water at a flow rate of 17.5 ml/sec.

REFERENCES:
patent: 2688380 (1954-09-01), MacHenry
patent: 2761798 (1956-09-01), Knudson
patent: 2916038 (1959-12-01), Wade
patent: 3081519 (1963-03-01), Blades et al.
patent: 3119396 (1964-01-01), Tanquary
patent: 3347247 (1967-10-01), Lloyd
patent: 3412737 (1968-11-01), Pinter et al.
patent: 3416540 (1968-12-01), Lidums
patent: 3461880 (1969-08-01), Stubblefield
patent: 3595245 (1971-07-01), Buntin et al.
patent: 3656484 (1972-04-01), Roberts et al.

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