Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1972-11-20
1978-02-07
Pianalto, Bernard D.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428211, 428304, A24C 548
Patent
active
040727890
ABSTRACT:
A predetermined pattern of impervious material is deposited on a sheet of coarse, self-cohesive filter material. The impervious material is fusible and adapted to be bonded to the filter material. The pattern of impervious material is such that when the sheet material is coiled into a filter rod and fused at least one antispin band will be formed in the rod located such that there are no interconnecting cavities between the coiled layers of sheet material. Additionally, at least one annulet plug will be formed in the rod and at least one disc plug will be formed in the rod. The outer diameter of the disc is at least as great as the inner diameter of the annulet to thereby provide a tortuous filter path for high efficiency and low pressure drop filtering procedures.
REFERENCES:
patent: 1756919 (1930-04-01), Becker et al.
patent: 2154943 (1939-04-01), King
patent: 2348688 (1944-05-01), Abrams et al.
patent: 2357100 (1944-08-01), Gebauer-Fuelnegg et al.
patent: 2376778 (1945-05-01), Kallander
patent: 2785681 (1957-03-01), Fessler
patent: 2832351 (1958-04-01), Hale
patent: 3298851 (1967-01-01), Fuchs
patent: 3349749 (1967-10-01), Utschig
patent: 3632384 (1972-01-01), Saint-Pastou
Brown & Williamson Tobacco Corporation
Mason William J.
Pianalto Bernard D.
LandOfFree
Sheet material does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sheet material, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sheet material will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1401428