Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Reshaping running or indefinite-length work
Patent
1987-04-09
1988-12-20
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Reshaping running or indefinite-length work
264134, 264280, 264295, 264320, 264339, B29C 4322, B29C 5304, B32B 326, B32B 3112
Patent
active
047924276
ABSTRACT:
A method for making light, thin, thermoplastic slats for use in decorative window blinds of the Venetian or vertical rotatable slat types. Strips are prepared of flexible and resilient planar thermoplastic material of not more than 1/16 inch thickness with selected light transmitting qualities. The strips are then deformed into a permanent V-shaped cross-sectional configuration which is stiff and will not sag when supported by spaced blind slat supporting means. The deformation step is accomplished by bending the strips without the application of heat over a forming surface of not more than 1/4 inch radius to exceed the elastic limit of the strip material over the radius.
REFERENCES:
patent: 2155985 (1939-04-01), Waterman
patent: 2267869 (1941-12-01), Loehr
patent: 2315605 (1943-04-01), Enrenfeld
patent: 2318525 (1943-05-01), Renton
patent: 2534673 (1950-12-01), Holland
patent: 2620869 (1952-12-01), Friedman
patent: 2633191 (1953-03-01), Curtis, Jr.
patent: 2709488 (1955-05-01), Lorentzen
patent: 2734245 (1956-02-01), Chamberlain
patent: 3217631 (1965-11-01), Thompson et al.
patent: 3281516 (1966-10-01), Southwick
patent: 3454693 (1969-07-01), Crenshaw
patent: 3645317 (1972-02-01), Malone
patent: 3757718 (1973-09-01), Johnson
patent: 3776672 (1973-12-01), Heilmayr
patent: 4091592 (1978-05-01), Berlad et al.
patent: 4150086 (1979-04-01), Stenhall
patent: 4242414 (1980-12-01), McKenzie
patent: 4329307 (1982-05-01), Westcott et al.
patent: 4336834 (1982-06-01), Schaller
patent: 4614632 (1986-09-01), Kezuka et al.
patent: 4649008 (1987-03-01), Johnstone et al.
Kutach Karen D.
Nanik Division Wausau Metals Corporation
Silbaugh Jan H.
LandOfFree
Method for making light-transmitting slats for blind does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for making light-transmitting slats for blind, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for making light-transmitting slats for blind will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1908672