Abstract: A wireless hoist system including a first hoist device having a first motor and a first wireless transceiver and a second hoist device having a second motor and a second wireless transceiver. The wireless hoist system includes a controller in wireless communication with the first wireless transceiver and the second wireless. The controller is configured to receive a user input and determine a first operation parameter and a second operation parameter based on the user input. The controller is also configured to provide, wirelessly, a first control signal indicative of the first operation parameter to the first hoist device and provide, wirelessly, a second control signal indicative of the second operation parameter to the second hoist device. The first hoist device operates based on the first control signal and the second hoist device operates based on the second control signal.

Abstract: The geothermal heat transfer system comprises a plurality of heat exchange loops placed in the ground at an angle of less than a 20 degrees, but greater than a 5 degrees. Each loop has an out flow line and a return line, and a fluid tight, tapered end, U-turn juncture connecting the lines. A pair of distributors connects to inlet and outlet lines at a lower end and a plurality of outlet members at the upper end. A heat exchange device connects to the loops through the inlet and outlet lines. A liquid-oil-gas separator uses cup member and deflector to create a Venturi fluid inlet to separate the oil, returning it to the compressor. A bore hole drilling device comprises an hollow drilling bit with a cutting member at one end, a central fluid passage, and connecting means. The bore hole drilling device has a swivel member with a body portion and housing with a central bore and an inlet, connect to a water line. The body is position within the central bore and mounted for rotational motion within the housing.

Abstract: A geothermal heat transfer system having a plurality of heat exchange loops placed in the ground, each loop having an out flow line and a return line connected by a U-turn juncture. A heat exchange device connects to the loops through the inlet and outlet lines. A refrigerant charge control system selectively provides either heating or cooling heat transfer to or from a temperature regulated area. A charge control flow control device maintains a single flow direction of refrigerant within charge control system, while refrigerant flow reverses direction elsewhere in said heat pump system. A plurality of check valves are employed to provide the flow control. A float and stop valve system maintains a sufficient quantity of refrigerant in the condenser and evaporator of the heat pump for optimum design performance.

Abstract: The geothermal heat transfer system comprises a plurality of heat exchange loops placed in the ground at an angle of less than a 20 degrees, but greater than a 5 degrees. Each loop has an out flow line and a return line, and a fluid tight, tapered and, U-turn juncture connecting the lines. A pair of distributors connects to inlet and outlet lines at a lower end and a plurality of outlet members at the upper end. A heat exchange device connects to the loops through the inlet and outlet lines. A liquid-oil-gas separator uses cup member and deflector to create a Venturi fluid inlet to separate the oil, returning it to the compressor. A bore hole drilling device comprises an hollow drilling bit with a cutting member at one end, a central fluid passage, and connecting means. The bore hole drilling device has a swivel member with a body portion and housing with a central bore and an inlet, connect to a water line. The body is position within the central bore and mounted for rotational motion within the housing.

Abstract: A d.c. triggered master-slave flip-flop circuit including a master flip-flop with a capacitive delay means at its input, and a slave flip-flop having its input connected to the output of the master flip-flop. A capacitive delay means is connected at the input of the slave flip-flop. The slave flip-flop controls the connections at the input of the master flip-flop in known manner. The two capacitive delay means, serve to make each flip-flop circuit immune to noise pulses and also eliminate multiple triggering caused by contact bounce when the circuit is controlled by mechanical contacts.