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US 5,579,820 AGranted
Roll-up door for vehicle shelters
OwnerRobert LePage, Michel Paradisinventors
Life of this patent
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OwnerRobert LePage, Michel Paradisinventors
Estimating the term…
A roll-up closure device for typically collapsible vehicle shelters of the type having a structure made of assembled tubular members and cross-members and a complementary covering therefor made of a flexible plastics material and defining at the front end thereof a door opening. The side walls of the shelter are inclined in such a way as to diverge from top to bottom, whereby the door opening has generally a isosceles trapezoidal shape. The device includes a pair of opposed side guide rails mounted at laterally opposite sides of the door opening so as to follow the angled sides thereof, an overhead motor driven roll-up boom extending above the door opening, and a flexible closure shaped like the door opening and having its lateral side edges slidably engaged in the guide rails, whereby the closure device does not substantially reduce the lateral dimensions of the door opening. Cables attached to the roll-up boom are secured to the lateral edges of the closure so that the rotation of the boom causes the cables to wind around respective tapered pulleys provided near each end of the boom with the closure in a rolled attitude extending between the pulleys. Stretched elastics are secured to the lower part of the closure to laterally retract the side edges of the latter towards each other as the closure is being raised. A tensioning mechanism is provided to ensure that the cables remain taut at any position of the closure.
A roll-up closure device typically for use on vehicle shelters of the type defining at a front end thereof a door opening having lateral sides which diverge from top to bottom, comprising a pair of guide means adapted to be mounted to the vehicle shelter substantially at the lateral sides of the door opening and substantially parallel thereto thereby diverging from top to bottom an overhead roller means adapted to be rotatably mounted inside the vehicle shelter and substantially horizontally adjacent an upper end of the door opening, a flexible closure means adapted to be secured at a top end thereof to said roller means, at least a section of said flexible closure means having a shape which tapes in direction of said roller means and including diverging lateral side edges adapted to be engaged in said guide means, whereby a rotation of said roller means causes said flexible closure means to displace along said guide means and to wind around said roller means or to unwind therefrom for displacing said flexible closure means towards an open or a closed position thereof, respectively, wherein in said closed position, said section of said flexible closure means substantially completely closes the door opening.
Dependencies are inferred from the claim text.