Back to results
US 2009/0266499 A1Published application
Roll-up closure
OwnerMike Svensoninventor
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
OwnerMike Svensoninventor
Estimating the term…
A spring tensioning unit for a roll-up closure, the closure having a pair of end plates and an axle rotatably mounted on the endplates. A drum for carrying a closure is rotatably mounted on the axle, and a tensioning coil spring is mounted on the axle and connected between the axle and the drum. The tensioning unit has a ratchet wheel fixedly mounted on the axle adjacent one end plate, the wheel having spaced apart teeth. A stop member is slidably mounted on the one end plate with a stop tab cooperating with the teeth on the wheel to stop rotation of the wheel in a direction reducing tension on the spring. A lever is mounted between the wheel and the end plate, the lever having a lever tab for cooperating with the wheel, the lever movable on the axle to position the lever tab against a tooth and to then rotate the tooth, and the axle, in a direction to increase tension on the spring.
A spring tensioning unit for a roll-up closure, the closure having:
A hollow drum for a roll-up closure that is extruded and which has at least two apart channels on the inner surface of its wall opening radially inwardly, the channels slidably receiving elements to be mounted within the drum while preventing their rotation.
A hollow extruded drum for a roll-up closure wherein the drum has a shallow depression formed in the wall, the depression extending inwardly and extending across the width of the drum, and an overhang extending partway over the depression from one side of the depression, the one side of the depression being curved to match the curve of one side of a male hinge member on one side of a slat of a door to be wound on the drum, the overhang and the curved side imitating the curved open side of the female hinge member on the other side of the slat.
A hollow extruded drum for a roll-up closure, the closure having a hinged door, the drum having a slightly oval cross-sectional shape, the wall of the drum having mounting means on its outer surface at one narrow end of the drum for mounting one end of the hinged door of the closure thereon.
Dependencies are inferred from the claim text.