Abstract: A detachable push plate assembly for handtrucks is disclosed. A user applies downward pressure on a lever arm causing a push plate to move forward and discharge cargo, or to discharge the handtruck out from underneath cargo from the bottom of the handtruck. The push plate assembly comprises four major components: a one piece integral housing; a push plate; a projection bar connected to the push plate; and a one piece pedal assembly coupled to the projection bar. The assembly also comprises a spring that biases the push plate to a retracted position when not in use, and a wear plate or shim to prevent deterioration of the housing base.

Abstract: A detachable push plate assembly for hand trucks is disclosed. A user applies downward pressure on a lever arm causing a push plate to move forward and discharge cargo, or to discharge the hand truck out from underneath cargo from the bottom of the hand truck. The push plate assembly comprises four major components: a one piece integral housing; a push plate; a projection bar connected to the push plate; and a one piece pedal assembly coupled to the projection bar. The assembly also comprises a spring that biases the push plate to a retracted position when not in use, and a wear plate or shim to prevent deterioration of the housing base. Alternatively, the push plate assembly may have an electrically driven gear wheel engaging the projection bar, the limits of travel being defined by a limit switch actuated by stops on the gear wheel.

Abstract: A pigtailed screw on wire connector cap for connecting plural electrical appliances to a single device. The pigtailed screw on wire connector includes a basic screw on wire connector having an insulative cap thereon, and a flexible stranded wire lead extending from the screw on wire connector. The screw on wire connector has a substantially frustoconical cavity with distinct regions having varying diameters which are predominately threaded. The terminal region can have a limited or an extended space with or without any conducting surface. A contiguous region has a narrowed diameter. The next conductive region is conical with the largest diameter proximate to the opening of the cavity. The cylindrical region at the opening is nonconductive. The end of the soft stranded bare wire of the pigtail wire is crimped with a conductive sleeve and inserted into the terminal region where it is effectively confined during the subsequent twisting procedure.

Abstract: A refrigeration compressor of the hermetically sealed type. The rotor of the motor is enclosed within the envelope providing the seal, whereas the stationary winding is external to this envelope. The refrigerant circuit cools the compressor and rotor in the normal fashion, and the stationary winding is cooled by ambient air. This reduces the total cooling burden imposed upon the compressor and its motor, thus reducing electrical consumption, In some applications, the rotor includes a magnetic drive which rotates a fan external to the envelope, which fan moves ambient air over the winding, thereby cooling the same. Thus, a second benefit is provided in that one of two motors conventionally furnished in an air conditioning condensing unit is eliminated. This increases electrical energy savings since one large motor is normally more efficient than two smaller ones, when total outputs are equal.

Abstract: Heat pump/air conditioning converter apparatus for directing a refrigerant from a compressor to a first heat exchanger located within a building and a second heat exchanger located outside the building for selectively cooling and heating the first heat exchanger. The apparatus has a housing within which a reversing valve, a liquid refrigerant flow control valve system, an expansion valve and an accumulator tank is incorporated. The housing has a number of cavities for receiving the various components of the valves and tank, and a number of passageways for directing the refrigerant to the components to minimize the number of external connections. The reversing valve incorporates an axially slideable rod having a large main piston positioned centrally thereon and a pair of smaller valve opening/closing piston members at each end, one end controlling the hot high pressure gaseous refrigerant and the other end controlling the low pressure relatively cool gaseous refrigerant.