Abstract: The present invention is a valve and valve housing designed for controlling the flow of water into washing machines comprising a molded plastic housing (1) with an inlet coupling (2) connecting the valve to the water supply, and an outlet coupling (3) connecting the valve to the washing machine; a poppet valve (4) located between said water inlet and outlet couplings normally remains closed with respect to its seat (5); the stem (4a) of said poppet valve (4) is associated with a leaf spring (8), and actuated by a piston (7) projecting from a casing (6) containing a wax with high thermal dilative properties; said casing (6) is in contact with one or more thermistors (9) (PTC) electrically powered through terminals (10) connected to the washing machine's timer, and having the purpose of opening the valve when the thermistor(s) is/are energized causing the wax contained in the casing (6) to expand inducing the axial movement of the piston (7), the leaf spring (8), and the poppet (4) of the valve, which retracts

Abstract: This invention relates to a dishwasher equipped with a single, unidirectional electric motor driving two impellers coaxial to a pump which sends water to a bypass valve containing inlets and outlets. The opening and closing of inlets and outlets is controlled by an actuator thermally activated by a heater/controller. Power is supplied to the controller through leads connected to a timer.

Abstract: A carburator for internal combustion engines has a main jet for delivering fuel to be entrained with air as it passes through the carburator to the inlet side of the engine. A throttle valve is disposed downstream of the main jet for controlling the flow of air and entrained fuel. An idling jet disposed downstream of the throttle valve is adapted to deliver fuel to the air stream at a rate sufficient to ensure that the engine continues running while the throttle valve is substantially closed. The idling jet is additionally adaptable to admit air to the stream of air-fuel mixture as it flows through the carburator at higher rates of air flow. Means are provided to switch the idling jet between fuel delivering and air delivering modes in response to engine speed. Thus, at lower engine speeds fuel is delivered through the idling jet and a slightly rich mixture passes to the engine. At higher speeds, air is admitted resulting in a weaker mixture than has been set by the main jet and the throttle valve.

Abstract: A four-way electrovalve, particularly for the reversal of refrigerant flow in all types of refrigeration and conditioning systems such as heat pumps, or any other systems where it is periodically necessary to reverse the direction of flow of a compressed fluid. The valve comprises a hermetically sealed housing with four ports for the inflow and outflow of pressurized fluids; said ports are controlled by a deflector governed by a thermoactuator associated with one or more thermistors (PTC) acting against elastic devices (FIG. 1.).

Abstract: An electric relay has a casing enclosing a thermally expandable mass associated with a thermistor (PTC) as a heat source, connected to an electric excitation circuit. A rod projects from said casing to come in contact with a rocker lever which, in conjunction with the reaction of a spring, causes a second spring to bend. The bending second spring moves an armature comprising a contact point, so that the contact point comes in contact with a second fixed contact point, thus closing an electric circuit. The elastic reaction of the springs and a tooth on the rocker lever bring the relay back to the resting position when power to the thermistor is interrupted.

Abstract: A valve for channeling refrigerant gases into different tubes of refrigeration devices comprising a casing enclosing a waxy, thermally expandable mass hermetically sealed by an elastically deformable diaphragm that activates the rod of a needle valve controlling two outlets of gases entering the valve. The heating of the casing is achieved by means of one or a pair of electrically-powered thermistor(s) (PTC). The valve is hermetically sealed against gas leakage; the electrical components of the valve are enclosed in a housing made of an insulated material, and can be removed and interchanged with respect to a bracket connected to the body of the valve with a tube. The valve rod lies longitudinally within the tube and is hermetically enclosed by a diaphragm or metallic bellows.

Abstract: A thermal actuator is provided in which a thermally expansible material such as a high melting point wax is heated to produce linear movement of an actuator element. A secondary chamber containing a biconical mass provides a sealing chamber for the wax.