Abstract: A roll-up door assembly includes a first curtain, a second curtain, and a side frame. The first curtain and the second curtain can transition between a lowered position and a raised position. The first curtain and the second curtain at least partially define an internal volume in the lowered position. The side frame includes an elongated body defining a hollow interior, a pair of curtain tracks, a heating assembly, and an inlet assembly. The pair of curtain tracks can guide the first curtain and the second curtain between the lowered position and the raised position. The heating assembly can circulate heated air into the internal volume. The inlet assembly can provide fluid commination between the heating assembly and a lower temperature conditioned space such that the heating assembly can circulate air from the lower temperature conditioned space into the internal volume.

Abstract: A door system comprises a door panel, a support member, and a pivoting vertical plate. The door panel comprises a plurality of discrete rigid insulation pieces interposed between flexible layers. An outer skin encompasses the rigid insulation pieces and the flexible layers. The door panel is secured to the support member by the outer skin, such that the outer skin bears the weight of the door panel. The vertical plate is secured to a trailing side of the door panel. The vertical plate includes keepers that selectively engage hooks extending from a casing positioned at a doorway. The rigidity of the door panel depends on the pivotal position of the vertical plate relative to a plane defined by the door panel. The door panel provides sufficient flexibility to withstand impacts from objects and vehicles yet also provides sufficient rigidity to insulate a cold environment from a warm environment.

Abstract: A door system for a cold storage locker includes resilient door panels that flex and have increased resistance to damage when hit by a forklift. A high degree of insulation is achieved by the choice and thickness of the resilient foams therein. Also, the resilient door panels are magnetically attracted to a gasket seal on a doorframe to provide an affirmative seal. Active magnetic control may enhance the attraction or repulsion of the door panel. Frost control is realized by warming air from the cold storage locker and passing it through air channels in the door panel proximate to the gasket seal and down an astragal interface between door panels. Door panels of laminate, bagged poured foam formation, and self-skinning foam formation further reduce the cost of manufacture and shipping.

Abstract: A portal stand for an RFID antenna comprises a pair of upright members and a front cover. The front cover is formed of a sheet of plastic that is resiliently biased to assume a flat configuration, with the front cover defining a flat width when it is in the flat configuration. The upright members include vertical slots and are spaced apart at a distance that is less than the flat width of the front cover. The front cover is disposed in the vertical slots and is bowed outwardly. The portal stand also includes a plurality of platforms that may be used for mounting RFID equipment such as antennas and readers. The platforms are secured to rails that are also secured to the upright members. The portal stand also includes a top cover, bottom cover, and rear cover, with the platforms being positioned between the front cover and rear cover.

Abstract: A radio frequency identification (RFID) portal easily installs and integrates any RFID hardware/software systems. The RFID portal may match the size of a traditional dock or be custom sized. The portal takes advantage of a variety of unique features including an antenna bracket that provides for three-dimensional vertical and horizontal movements and a hardware independent reader bracket. The antenna movement capabilities allow for excellent RFID signal coverage. A General Purpose Input/Output (GPIO) bridge enables rapid integration and functionality to other RFID inputs such as Motion Detectors/Photo Eyes, Uninterrupted Power Supply (UPS), Wireless Networking, floor loops, mass detectors, and output signals, such as to light stacks and RFID readers.

Abstract: A top-supported sliding door system or a vertically sliding door system achieves an enhanced air seal with a lateral keeper mechanism on either or both of the trailing and leading edges. On an outward lateral edge of a door panel, a keeper projects inwardly toward the door frame to engage a door frame camming surface such as a pin. The bracket may advantageously disengage under a force indicative of impact in order to minimize damage resulting therefrom. Application of the lateral keeper mechanism may further be used on vertically sliding doors and on multi-panel horizontal sliding doors. In addition, a rail may extend from the angled pin to engage the keeper throughout the full travel of the door panel.

Abstract: A door system for a cold storage locker has increased resistance to damage by including resilient door panels that flex when hit by a forklift. A high degree of insulation is achieved by the choice and thickness of the resilient foams therein. Also, the resilient door panels are magnetically attracted to a gasket seal on a doorframe to provide an affirmative seal. Active magnetic control may enhance the attraction or repulsion of the door panel. Frost control is realized by warming air from the cold storage locker and passing it through air channels in the door panel proximate to the gasket seal and down an astragal interface between door panels.

Abstract: A top-supported sliding door system or a vertically sliding door system achieves an enhanced air seal with a lateral keeper mechanism on either or both of the trailing and leading edges. On an outward lateral edge of a door panel, a keeper projects inwardly toward the doorframe to engage a doorframe camming surface such as a pin. The bracket may advantageously disengage under a force indicative of impact in order to minimize damage resulting therefrom. Application of the lateral keeper mechanism may further be used on vertically sliding doors and on multi-panel horizontal sliding doors. In addition, a rail may extend from the angled pin to engage the keeper throughout the full travel of the door panel.

Abstract: A door system for a cold storage locker has increased resistance to damage when by including resilient door panels that flex when hit by a forklift. A high degree of insulation is achieved by the choice and thickness of the resilient foams therein. Also, the resilient door panels are magnetically attracted to a gasket seal on a doorframe to provide an affirmative seal. Active magnetic control may enhance the attraction or repulsion of the door panel. Frost control is realized by warming air from the cold storage locker and passing it through air channels in the door panel proximate to the gasket seal and down an astragal interface between door panels. Door panels of laminate, bagged poured foam formation, and self-skinning foam formation give further reduced cost of manufacture and shipping.

Abstract: A sliding door assembly is provided for closing an opening in a wall which prevents contact between the seal between the door and wall during horizontal sliding movement of the door, but provides for the door to move downwardly and inwardly at the end of its horizontal travel so as to effect sealing engagement between the door and wall. A track, including a pair of spaced contoured ramps, is provided connected to the wall adjacent the top of the door, and two V-shaped rollers are mounted to the top of the door and engage the track. The rollers are spaced from each other the same distance that the contoured ramps are spaced from each other. A bridge is provided at the rear contoured ramp. The rollers are asymmetrical, and of different hand, so that the leading roller engages the bridge at the second contoured ramp, but the trailing roller engages the second contoured ramp. The rollers are spaced apart a distance less than the width of the opening in the wall.