Abstract: A door control system is provided. The control system includes a controller configured to control a door via a motor. The motor is powered by a battery and bypasses the controller via relays and/or switches when power to the controller is disconnected.

Abstract: A door control system is provided. The control system includes a controller configured to control a door via a motor. The motor is powered by a battery and bypasses the controller via relays and/or switches when power to the controller is disconnected.

Abstract: A wheel chock with a magnet actuated to lock and unlock with an underlying steel plate is anchored to the adjacent pavement. A proximity sensor senses the presence or absence of the underlying steel plate to ensure proper placement and magnetic engagement. Wireless transmission/receiver communications between the wheel chock, magnet, proximity sensor and a loading dock operations console provides remote sensing and control of the locking and unlocking operation. An electro magnet or a manually actuated permanent magnet can be used. The electromagnet can receive electric power from a battery or can be hard wired to the adjacent loading dock. The permanent magnet option may include wireless communication and a battery to be physically independent of the loading dock.

Abstract: A device for restraining a horizontal bar at the rear of a vehicle to a stationary support adjacent a loading dock, the device having: a frame having a vertical track and a mounting bracket for securing the frame to the stationary support; a suspended carriage mounted to the track for vertical movement relative to the track, the suspended carriage having a forwardly and upwardly extending member.

Abstract: A loading dock leveler with: a base; and a deck with a top platform, the deck having an inward end hingedly mounted to the inward end of the base for movement between an upper position and a lower position; an air compressor having a compressor capacity defined as a predetermined volume of compressed air delivered at a predetermined pressure delivered during a predetermined time period; a pneumatic deck lift actuator, comprising a pneumatic cylinder pivotally connected to the base and to the deck for rotary movement wherein the direct communication between the lift actuator inlet port and the compressor outlet, without a compressed air storage receiver tank, delivers compressed air directly from the compressor to the lift chamber at the compressor capacity within a lift actuation time period, and wherein the lift chamber volume divided by the compressor capacity equals the lift actuation time period.

Abstract: A device for restraining a horizontal bar at the rear of a vehicle to a stationary support adjacent a loading dock, the device having: a frame having a vertical track and a mounting bracket for securing the frame to the stationary support; a suspended carriage mounted to the track for vertical movement relative to the track, the suspended carriage having a forwardly and upwardly extending member; a vertical motion actuator mounted to the frame and having: a master carriage slidably mounted to the suspended carriage, the master carriage engaging the suspended carriage for moving the suspended carriage between a lower retracted position and an upper engaged position wherein the member engages a forward surface of the horizontal bar; and a resilient suspension member disposed between the master carriage and the suspended carriage and having a resilient range of travel, whereby the suspended carriage is capable of vertically floating relative to the master carriage within the range of travel; a control system inc

Abstract: A loading dock leveler having: a base having an inward end; a deck with a top platform, the deck having an inward end hingedly mounted to the inward end of the base for movement between an upper position and a lower position; an on-demand air compressor with an electrically powered motor, the compressor having inlet in communication with a source of ambient air and a compressed air outlet; a pneumatic deck lift actuator pivotally connected to the base and to the deck for rotary movement between a raised position and a lowered position, the lift actuator having a lift chamber, and an inlet port in direct communication with the compressor outlet through an electric powered lift valve to the lift chamber, and having a vent valve in communication with the lift chamber; and an electric user control interface having: an electric up/down switch in communication with the motor to conduct electric power to the motor and open the lift valve in an up position, and to prevent conduction of electric power to the motor and

Abstract: A loading dock leveler having: a base with an inward end; a deck with a top platform, the deck having an inward end hingedly mounted to the inward end of the base for movement between an upper position and a lower position; a bellows assembly spaced a distance below the deck, the bellows assembly including an inflatable air bag with a bottom surface engaging the base and a top surface engaging a lever arm hingedly mounted to the base, the lever arm and air bag moving between an inflated position and a deflated position, the air bag having an internal chamber in communication with a source of pressurized air and an air vent; a support strut having an upper end engaging the deck and a lower end engaging the base, the support strut being moveable with the deck between: the lower position; and the upper position wherein the support strut supports the deck, and; a mechanical motion transfer device engaging the lever arm of the bellows assembly and engaging the base, the motion transfer device transferring relative