Abstract: A valve for automatically modulating fluid flow includes a flexible flow adjustment member having a variable diameter passage therethrough and an outer surface and a shell surrounding at least a portion of the outer surface and creating a void between the shell and the outer surface. The shell is in contact with the flow of fluid. A thermally reactive material that expands when heated and contracts when cooled is a substantially non-volatile heat transfer liquid that does not undergo a phase change in use and contains inert particulate filler within the void and is in contact with the outer surface of the flexible flow adjustment member. The thermally reactive material exerts pressure on the adjustment member in response to heating the thermally reactive material to cause the passage to narrow and relieves pressure thereon in response to cooling the thermally reactive material to permit the passage to widen.

Abstract: A valve for automatically modulating fluid flow includes a flexible flow adjustment member having a variable diameter passage therethrough and an outer surface and a shell surrounding at least a portion of the outer surface and creating a void between the shell and the outer surface. The shell is in contact with the flow of fluid. A thermally reactive material that expands when heated and contracts when cooled is a substantially non-volatile heat transfer liquid that does not undergo a phase change in use and contains inert particulate filler within the void and is in contact with the outer surface of the flexible flow adjustment member. The thermally reactive material exerts pressure on the adjustment member in response to heating the thermally reactive material to cause the passage to narrow and relieves pressure thereon in response to cooling the thermally reactive material to permit the passage to widen.

Abstract: A valve for automatically modulating a flow of fluid. The valve includes a flexible flow adjustment member having a variable diameter passage therethrough and an outer surface and a shell surrounding at least a portion of the outer surface and creating a void between the shell and the outer surface. The shell is in contact with the flow of fluid. The valve further includes a thermally reactive material that expands when heated and contracts when cooled. The thermally reactive material is within the void and is in contact with the outer surface of the flexible flow adjustment member. The thermally reactive material exerts pressure on the flexible flow adjustment member in response to a heating of the thermally reactive material to cause the variable diameter passage to close and to relieve pressure thereon in response to a cooling of the thermally reactive material to permit the variable diameter passage to open.

Abstract: A valve for automatically modulating a flow of a stream of fluid, the valve including a housing having a wall defining an interior cavity. The interior cavity is in fluid communication with the stream of fluid. A modulator is mounted within the interior cavity and includes a shell in fluid communication with the stream of fluid and a flexible flow adjustment member within the shell. The flexible flow adjustment member has a variable diameter passage therethrough which is also in fluid communication with the stream of fluid. A circumferential void is located between the flexible flow adjustment member and the shell and a thermally reactive material is within the void and in contact with the shell for thermal communication therebetween. A tool is used to assemble the valve. The tool includes a base plate, and a receiver adjacent to the base plate. The receiver has an internal passage therethrough for receiving a segmented cone having at least one radial cut therethrough.

Abstract: The present invention shows a self-contained, thermostatic temperature and pressure operated pinch valve in which the path of fluid flow through the valve may be automatically and directly controlled by the temperature and pressure of a flow material. Various conventional sensing mechanisms may be employed in the pinch valve of the invention.

Abstract: An apparatus for prompting an operator in the performance of cardio pulmonary resuscitation. The apparatus comprises a casing housing, a keypad with input switches, a display with light emitting devices, audible buzzers and a control circuit embodiment in a programmed microprocessor and associated circuitry. Input prompting signals are controlled by the control circuit to prompt the operator to ascertain the presence of a pulse of the casualty, specify the number of rescuers performing the resuscitation, and specifiy the age status of the casualty. The control circuit prompts the operator to perform either or both heart compression and lung inflation on the casualty at a prescribed rate.

Abstract: A temperature-sensitive actuator is operatively connected to a valve by means of a spring-loaded linkage. The actuator causes a tensioned spring in the linkage to pass over center upon the occurrence of a predetermined temperature, thereby fully opening or closing the valve. The invention may be embodied in several forms including an automatic drain for water systems and a fire extinguishing system sprinkler control.

Abstract: A fluid temperature actuated valve for trapping fluids in a system, having particular utility as a steam trap. The valve is closed by the expansion of a wax pellet type thermal actuator working against the valve opening force of an operating spring. The valve may be provided with an ambient sensing on-off control in the form of an air temperature responsive actuator which is coupled to the fluid sensing actuator by a suitable insulator. The air sensing actuator upon the occurrence of a predetermined ambient temperature condition will displace the fluid sensing actuator a sufficient degree to prevent the opening of the valve. The valve with the ambient sensing control may be employed as the only control on a steam tracer line, serving the dual function of a steam trap as well as an on-off control response to the ambient temperature.