A regulator for regulating the electrical current supplied to an electrical apparatus by intermittently switching on and off said current. The regulator includes an electrically-heated expansion system acting on an electric switch for the apparatus. The invention calls for a pressure cell for bearing on the switch which is hydraulically connected to a hydraulic chamber remote from said pressure cell, an expansible liquid being contained in the hydraulic system and electric heating means being pr...

A voltage regulator and regulator buffer having a plurality of matched transistors including an output transistor arranged such that the fluctuation in supply voltage is sensed by a shunt circuit which tracks such voltage fluctuation and eliminates such fluctuations from the output transistor by causing current variations due to supply voltage variations to flow through another transistor connected in parallel with the output transistor thus eliminating the first order effects of power supply vo...

A voltage regulator including a current regulator for maintaining predetermined currents in the voltage regulator is disclosed. The voltage regulator includes an output terminal for providing an output voltage; an adjustment terminal; and a control circuit connected to the output terminal at a level that differs from the voltage at the adjustment terminal by a predetermined voltage difference. The control circuit of the voltage regulator includes a resistive divider coupled between the output te...

A flush regulator selectively operable in partial flush mode or a full flush mode for use with a water closet including a water storage stank having a flush drain aperture formed in the lower portion thereof and a buoyant flapper valve disposed to selectively seal the flush drain aperture movable between an open and closed position by a flush handle movable between a first and second position to selectively control the flow of water through the flush drain aperture, the flush regulator comprisin...

A passive aspirator based on the Venturi effect has a pivotable flap in the inlet portion of a first air passage. The flap reduces the air flow through the passage when high pressure is present. A spring biases the flap toward an open position. Increasing air flow overcomes the spring force and tends to close the flap. This variable-volume flow allows use of a large enough passage to aspirate sufficient air at low flow rates but does not produce excess waste air at high flow rates.

Pressure flow regulator for use in pneumatic pressure control devices for maintaining a constant predetermined output pressure from a given constant or variable input pressure. The regulator includes a main housing, an inlet port, an outlet port, an air adjustment regulator and an insert assembly forming air passages when installed in the main housing. The insert is formed such that when inserted in a bore machined into a blank, the insert and the bore mate to form chambers and passages needed f...

A fluid pressure regulator of compact construction including an improved diaphragm-valve assembly interposed between a flow body and a second body cap element. The flow body has an inlet and outlet passage and a valve cavity with a centrally disposed ported valve insert to allow the regulated passage of fluid. Mounted to the flow body, the cap element confines a diaphragm of the diaphragm-valve assembly and houses an adjustable coil-spring biased against the assembly. The diaphragm-valve assembl...

A window regulator includes a rotatable hub that is coupled to a traveller by a cable, such that rotation of the hub raises and lowers the traveller. The hub is mounted on a driven gear which is rotated by a drive gear. The hub and the driven gear are concentrically mounted around a post, which defines an outer surface that is frictionally engaged by a coil spring that is coupled both to the driven gear and to the hub. The coil spring brakes rotation of the hub when the traveller is pushed downw...

A current regulator, preferably constructed in accordance with monolithic integrated technology, for high currents is proposed, whose output current (I) is a function of an input quantity (E). In this case the output current (I) is less in a range of the input quantity (E) different from a value of zero than the value given in this range by the functional relationship between the input quantity (E) and the output current (I).

A temperature regulator is provided which includes a temperature sensor, a temperature regulating unit, a cold junction temperature measuring device and a double-wall insulating partition. Temperatures measured by the temperature sensor are compensated with the temperatures measured by the cold junction temperature measuring device. Since the double-wall insulating partition insulates the cold junction measuring device from the heat generated inside the temperature regulating unit, the cold junc...