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US 4,544,011 AGranted
Pleat screen
AssigneeDowa Seishi Co., Ltd.
InventorMamoru Sawamura
Life of this patent
Estimating the term…
Abstract
A pleat screen includes a screen sheet having a plurality of zig-zag pleats and vertically foldable and unfoldable by an operator cord. At least one tape extends vertically through the pleats. Holders are mounted on the tape in engagement with selected ones of the pleats for supporting, from below, the selected pleats to prevent the pleats from being lowered due to their own weight when the screen sheet is vertically unfolded.
Claims4
A pleat screen having a front side and a back side comprising:
- a screen having a plurality of pleats vertically foldable and unfoldable, each of said pleats having an upper portion and a lower portion and each having slits defined therein defining in said screen at least one vertically aligned row of slits;
- at least one tape, extending vertically along said screen between the upper and lower ends thereof and extending through said vertically aligned row of slits defined therein, said tape having a plurality of vertically aligned slots defined therein;
- holding means acting between selected ones of said pleats and said tape for keeping said plurality of pleats vertically spaced at substantially equal distances, wherein said holding means comprises a plurality of holders attached vertically immovably to said tape in abutment against said lower backs of the selected pleats for supporting, from below, said pleats to thereby prevent the latter from being lowered under their own weight, said holders having locking tongues, each locking tongue being inserted into one of said slots such that said holders are retained on the tape respectively at said slots.
Dependencies are inferred from the claim text.