Abstract: An identification system having a light source, an identifiable object and a receiver. The identifiable object having one or more photo-activated microtransponders operatively connected to an article. The photo-activated microtransponders are operative to transmit one or more output signals to the receiver in response to one or more light signals from the light source.

Abstract: A refrigerant charging system comprising a hollow manifold having a first end and a second end and a central region therebetween; a suction port adjacent to the first end with a first line couplable to the suction side of a compressor of an air conditioner; a suction valve adjacent to the suction port and positionable between a closed orientation and an open orientation; a low pressure gage adjacent to the suction port; a discharge port adjacent to the second end with a second line couplable to the compressor of an air conditioner; a discharge valve adjacent to the discharge port and positionable between a closed orientation and an open orientation; a high pressure gage adjacent to the discharge port; a refrigerant port with a third line for coupling the central region of the manifold and to a refurbishing tank; a vacuum port with a fourth line located between the refrigerant port and the first end for coupling the manifold and a vacuum pump.

Abstract: A heat-sensitive assembly mountable as unit and responsive to predetermined ambient temperature conditions above normal room temperature for activating a device for protection against heat or fire, comprising thin metal plates soldered face to face with eutectic solder, with large surface area and small mass and minimum contact with the elements to which they are connected. Also an alarm assembly comprising a supporting housing, an acoustic device, a coupler assembly supported by said housing and connecting said acoustic device and said container, a thermally responsive assembly mounted on said coupler assembly. Means on said coupler assembly conducting gas from said container to said acoustic device. A valve is opened on activation of said thermally responsive assembly to cause actuation of said acoustic device. A visual signal is given by swinging down of a guard member if the container contents leak. A container can be snapped into its place in the coupler assembly.

Abstract: A heat-sensitive assembly mountable as unit and responsive to predetermined ambient terperature conditions above normal room temperature for activating a device for protection against heat or fire, comprising thin metal plates soldered face to face with eutectic solder, with large surface area and small mass and minimum contact with the elements to which they are connected. Also an alarm assembly having a supporting housing, an acoustic device, a coupler assembly supported by said housing and connecting said acoustic device and said container, a thermally responsive assembly mounted on said coupler assembly. A flexible tube on said coupler assembly conducting gas from said container to said acoustic device. A valve is opened on activation of said thermally responsive assembly to cause actuation of said acoustic device. A visual signal is given by swinging down of a guard member if the container contents leak. A container can be snapped into its place in the coupler assembly.

Abstract: A lock system controls exiting and entering of personnel, particularly in public and commercial structures by means of an alarm and a panic bar and key system to operate a lock through a series of interlocking controls including an internal panic bar, an internal key lock, an external key lock and a supplemental manual control. Four modes of operation are provided in which the panic bar is at all times operative and the alarm is selectively operative to provide, in addition to panic bar actuation or in combination therewith, authorized passage, authorized exit only, free passage in both directions and free exit only.