Abstract: A warehouse dock light includes a lamp assembly which is provided with a plurality of LEDs arranged in such a fashion as to collectively provide sufficient light for illumination of an area. The LEDs are arranged in two columns with each column having both LEDs with narrow angle and wide angle lens, and with each column being angled so as to project outwardly from a central axis. Heat from the LEDs is dissipated through bi-metal boards to an extruded aluminum heat sink, and air is blown through the ribs of the heat sink by a fan. A heat sensor is provided with electronic circuitry to responsively turn on the fan and/or turn off the LEDs at predetermined temperature thresholds.

Abstract: The bottom surface of a dock leveler is insulated by attaching sheets of insulative material between adjacent support beams. Attachment is by way of magnet attached to the bottom surface of the deck to hold downwardly projecting spikes that penetrate the insulative material, with a self locking washer then being placed over the spike in order to secure the sheet of material in place. Installation with variable widths between adjacent support beams is facilitated by pre-perforating the sheets of insulative material along longitudinal lines to thereby allow easy separation and width adjustment to match the variable widths between the support beams.

Abstract: A temporary barrier chain for a loading dock door opening includes a vertical orientated storage tube on one side of the opening and a retainer on the other side thereof, and a counterweighted chain extending from inside the storage tube to a retainer on the other side of the opening, with the chain being comprised, at least partially, of successively lighter weight sections toward the retainer end such that the combined weight of the counterweight and suspended chain within the storage tube will cause the chain to be automatically retrieved into the storage tube when released from the retainer.

Abstract: An overhead door with rollers on its sides is provided with a pair of elevated, non-vertical tracks into which the rollers move as the door is moved to the open position. The door is opened by cables that extend from a pair of drums, to pulleys at the distal ends of the tracks, and then to the top corners of the door. Provision is made for transitioning curved portions of the tracks, and, in some cases, vertical portions below the curved portions, by a plurality of links provided between the cable ends and the door upper corners.

Abstract: A warehouse dock light includes a lamp assembly which is provided with a plurality of LEDs arranged in such a fashion as to collectively provide sufficient light for illumination of an area. The LEDs are arranged in two columns with each column having both LEDs with narrow angle and wide angle lens, and with each column being angled so as to project outwardly from a central axis. Heat from the LEDs is dissipated through bi-metal boards to an extruded aluminum heat sink, and air is blown through the ribs of the heat sink by a fan. A heat sensor is provided with electronic circuitry to responsively turn on the fan and/or turn off the LEDs at predetermined temperature thresholds.

Abstract: In a spring loaded shaft for automatically rewinding a cord or the like after it has been unwound for temporary use, provision is made for reducing the whipping effect by slowing the speed in which the rewinding occurs. An elongate member is attached to an end of the shaft and is disposed within a liquid substance contained in a housing such that rotation of the shaft is slowed by the interaction of the elongate member with the liquid substance.

Abstract: A lawn mower includes an elongated downwardly open housing having an endless belt entrained therein about a pair of pulleys mounted at opposite ends of the housing. A plurality of C-shaped, channel-like blades are mounted transversely on the outer surface of the belt to cut the lawn as the housing is moved across the lawn on a plurality of rollers. The housing is divided into a plurality of sections which are pivotally interconnected so that the housing sections may pivot relative to each other due to uneven ground. Guide brackets are provided within the housing to maintain the opposed reaches of the belt parallel to each other during such pivoting of the sections.

Abstract: The truck locking device includes a flat substantially triangular shaped support member having a vertically extending surface and an inclined surface, a pair of locking arms pivoted adjacent the intersection of the vertical and inclined surface on opposite sides of the support member, a pair of double acting pneumatic cylinders mounted on opposite sides of said support member for moving the locking arms into and out of engagement with a standard ICC bar on the back of a truck and an activating arm pivoted on the support member for pivotal movement under the influence of the bar as it is moved over the locking device to operate a valve to cause the pneumatic cylinders to move the arms upwardly for engagement with the bar to lock the truck in position relative to a loading dock or the like. A second valve is provided for activating the cylinders for retracting the locking arms upon completion of a loading or unloading operation to release the truck.

Abstract: The truck locking device includes a flat substantially triangular shaped support member having a vertically extending surface and an inclined surface, a pair of locking arms pivoted adjacent the intersection of the vertical and inclined surface on opposite sides of the support member, a pair of latches on opposite sides of said support member for latching the locking arms in retracted position substantially parallel to the inclined surface of the support member, a spring for normally biasing the locking arms upwardly independent of each other into engagement with a standard ICC bar on the back of a truck and an activating arm pivoted on the support member for pivotal movement under the influence of the bar as it is moved over the locking device to operate the latch members and release the locking arms for engagement with the bar to lock the truck in position relative to a loading dock or the like.