Tubular slat for coverings for architectural openings
AssigneeHunter Douglas Inc.
InventorsWendell B. Colson, James M. Anthony, Paul G. Swiszcz, Jason T. Throne
Life of this patent
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Abstract
A slat or vane for use in a covering for an architectural opening is suitable for use in either a horizontal or vertical orientation and in a horizontal orientation will not sag or droop, and in a vertical orientation will rotate uniformly along its length when rotated from end thereof. The slat is formed in a tubular configuration and has a base material of glass fibers bonded together in a thermoformable resin so as to maintain the arcuate curvature desired for the tubular slat or vane. The slat can be repeatedly deformed and will always return to its original configuration.
Claims7
A method of forming an elongated flat strip of material into an elongated strip having an arcuate transverse configuration, manipulating the strip into a roll such that the arcuate transverse configuration is flattened and subsequently unrolling the flattened strip so it reassumes an arcuate transverse configuration, comprising the steps of:
- providing an elongated starter strip of fiberglass in a thermosetting resin that has not been cross-linked by being heated;
- providing a first stationary mandrel having an arcuate surface and a system for heating said first stationary mandrel;
- providing a second stationary mandrel having an arcuate surface and a system for cooling said second stationary mandrel;
- passing said starter strip along its length across said first stationary mandrel to heat said thermosetting resin above its setting temperature to form a heated strip having said transverse arcuate shape;
- passing said heated strip along its length across said second stationary mandrel to cool said thermosetting resin beneath its setting temperature to form a cooled strip having said transverse arcuate shape;
- rolling up said cooled strip, whereby it will become deformed into a flattened transverse configuration and unrolling said deformed flattened strip allowing it to re-assume said arcuate transverse cross-section.
Dependencies are inferred from the claim text.