Abstract: A battery operated parking barrier which is directly driven by a motor between a blocking position and an open position, and a drive shaft which may be locked to resist external forces in the blocking position and in the open position.

Abstract: The presently disclosed technology is directed towards a battery operated parking barrier which is directly driven by a motor between a blocking position and an open position, and a drive shaft which may be locked to resist external forces in the blocking position and in the open position.

Abstract: An exercise machine has automatic and programmable resistance selection apparatus with vertically aligned weights that are selectable by rotably engaging a lift pin to select each weight stack. The exercise machine further includes a control panel from which the number of weights to be lifted can be ordered by the user. Alternatively the number of weights being lifted may be programmed from a remote location.

Abstract: An automatic door opening safety system particularly for use with garage doors is provided. The garage door includes a leading edge that moves from the open position, where the leading edge defines the top of the opening and a closed position, where the leading edge contacts the ground. A controller is provided for controlling movement of the door. An activation member provides an input to the controller to initiate movement of the door. A non-contact detector detects whether an obstruction is in the path of the door. The non-contact detector is positioned in front of the leading edge of the door, such that obstructions are detected at a predetermined distance in front of the leading edge of said door.

Abstract: An automatic door opening safety system particularly for use with garage doors is provided. The garage door includes a leading edge that moves from the open position, where the leading edge defines the top of the opening and a closed position, where the leading edge contacts the ground. A controller is provided for controlling movement of the door. An activation member provides an input to the controller to initiate movement of the door. A detection member is provided for detecting obstructions in the path of the garage door. The detection member includes an infrared transmitter for transmitting an infrared signal to the infrared receiver of the controller.

Abstract: A wireless safety system for a garage door opener adapted for use at least in part with an independent energy source is provided. The wireless safety system includes a control circuit for controlling movement of the garage door. An activation member provides an input to the control circuit to initiate motion of the garage door. A detecting member detects whether an obstruction is provided in the path of the garage door. The detecting member includes a first state, wherein the detection member does not detect obstructions and consumes minimal energy, and a second state wherein the detection member detects obstructions. The detection member is selectively switchable between the first state (dormant) and the second state (active) by the control circuit.