초록 ▼

A sectional roll-up door has two generally planar panels having confronting longitudinally extending edges, a hinge between the panels at the edges, a seal extending longitudinally along one of the edges and operatively engageable with the other of the edges, and an element for heating the seal. Eac

A sectional roll-up door has two generally planar panels having confronting longitudinally extending edges, a hinge between the panels at the edges, a seal extending longitudinally along one of the edges and operatively engageable with the other of the edges, and an element for heating the seal. Each panel comprises a pair of parallel and spaced skins, edge strips bridging the skins and forming the edges, and a mass of insulation between the skins. The heater is provided at the edges.

대표청구항 ▼

1. A sectional roll-up door for a walk-in refrigerator, the door comprising:two generally planar panels having confronting longitudinally extending edges and each also having a pair of parallel and spaced skins, edge strips bridging the skins and forming the edges, and a mass of insulation between t

1. A sectional roll-up door for a walk-in refrigerator, the door comprising:two generally planar panels having confronting longitudinally extending edges and each also having a pair of parallel and spaced skins, edge strips bridging the skins and forming the edges, and a mass of insulation between the skins; a hinge connected to the panels generally at the edges; a seal extending longitudinally along one of the edges and operatively engageable with the other of the edges, the door being movable between a closed position with the edges closely juxtaposed and the seal compressed between the edges and an open position with the edges spread apart from each other and the seal exposed; and means for heating the seal.