Texas Instruments Corporation

Donald J Chiavaroli

Thomas J Charboneau

Patrick F Meleney

A pressure system has a pressure vessel holding gas under pressure and has a pressure responsive device arranged to be responsive to loss of gas from the vessel to provide a warning signal or the like corresponding to the gas loss. The device has two springs opposing movement of a device diaphragm in response to the gas pressure in the vessel, one spring being arranged to oppose diaphragm movement resulting from change in the gas pressure due to change in gas temperature from a selected temperature in accordance with the gas law, and the other spring being arranged to permit diaphragm movement to change position of a control to provide a signal corresponding to a gas loss when change in the gas pressure in the vessel decreases to a selected level at the selected gas temperature. The cooperation of the two springs permits the device to respond to pressure changes in the vessel which are due to change in gas temperature as well as to any loss of gas which may occur and provides the desired warning signal when loss of gas is sensed at any system temperature within a temperature range likely to be encountered.

Pressure vessel system, pressure responsive device for the system, and

A fuel supply system for an internal combustion engine has an electrical resistance heater accommodated in a chamber in gasket means which space a throttle body flange from a mating flange on an intake manifold of the engine for transferring heat to the throttle body flange to avoid freeze up in the throttle body during furnishing of an air-fuel mixture to the engine.

Fuel supply system with improved throttle body heater

A fuel evaporation device for enhancing fuel evaporation in an automotive fuel supply system without excessively interfering with the flow of an air-fuel mixture to an automotive engine is particularly adapted for use where the system has an air-fuel passage directing the air-fuel mixture into an intake manifold and where fuel tends to condense on the walls of the passage during engine start up on cold days. The device has a multi-ply gasket with a central opening to be mounted on the engine between the air-fuel induction passage and the manifold, has a first terminal with a ring-shaped part mounted between the plies of the gasket to extend around a major part of the gasket opening, has a second terminal mounted in a common plane between the plies to extend into the opening in the remaining part of the opening periphery, has a tube with a flange at one end extending around a corresponding major part of its periphery secured to the ring-shaped part of the first terminal so that the tube is adapted to intercept fuel condensed on the passage walls and extends into the manifold, has a self-regulating electrical resistance heater electrically connected to the opposite end of the tube to be disposed within the manifold spaced from the opposite tube end in the path of the air-fuel mixture being directed into the manifold to receive condensed fuel from the opposite tube end, and has a conductor electrically connected between the heater and the second terminal for connecting the heater in an energizing circuit.

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Norton, MA, United States of America

Donald J Chiavaroli