Advancing material of indeterminate length – With means to temporarily deform material laterally
Patent
1992-04-23
1993-07-27
Spitzer, Robert
Advancing material of indeterminate length
With means to temporarily deform material laterally
55381, 55497, 55521, 55528, 55DIG5, 493941, B65H 2324, B01D 2937, B01D 4602
Patent
active
052304558
ABSTRACT:
A filter unit is made of two portions (14) of rigid corrugated material secured together along lands (50,52) extending parallel with the corrugations and, if desired, intermediate them, and also along lands (54) formed along one end of the corrugations, thus closing the passages formed when the two portions (14) are secured together. Suitable fastenings are adhesive bonding, and metallic fasteners, e.g. eyelets, or stitching. Further flanges (56) may be provided for facilitating a connection with a suitable suction or other air-drawing source; also if desired, such further lands (56) may be out-flanged for facilitating such connection. Apparatus for forming the sheet material is also provided whereby material from a continuous supply is progressively formed between two sets of blade members (102), the blade members being moved sequentially and alternately (as between the two sets) into forming engagement with the sheet material. The blade members are preferably heated in order to treat the material being formed to render it rigid. The apparatus further may comprise a severing blade (112) by which the thus formed material is cut into suitable portions (14).
REFERENCES:
patent: 2576864 (1951-11-01), Valente
patent: 2980208 (1961-04-01), Neumann
patent: 3124440 (1964-03-01), Hogg
patent: 3386227 (1968-06-01), Czerwonka
patent: 3386231 (1968-06-01), Nutting
patent: 3410062 (1968-11-01), Hart
patent: 3537241 (1970-11-01), Wiegel et al.
patent: 3568412 (1971-03-01), Schwab
patent: 3622446 (1971-11-01), Burnham
patent: 3774375 (1973-11-01), Smith
patent: 3807147 (1974-04-01), Schoonen et al.
patent: 4056375 (1977-11-01), Ringel et al.
patent: 4154587 (1979-05-01), Gerok
patent: 4938739 (1990-07-01), Nilsson
patent: 4940500 (1990-07-01), Tadokoro et al.
patent: 4976677 (1990-12-01), Siversson
Brine Aubrey C.
British United Shoe Machinery Limited
Meegan Owen J.
Spitzer Robert
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