Other

Boc Health Care, Inc.

Lean Power LLC

Bowles Fluidics Corporation

Sonex Research, Inc.

Mhl Communications, Inc.

Michael D Leshner

Ronald D Stouffer

Thomas C Jones

Thomas S Tonon

Ronald L Tobia

Ernest W Chesnutis, Jr

Russell J Fischer

Howard P Leshner

Claudio Bruno

Christian Williams

Apparatus for quantifying the amount of re-breathing due to bedding materials. The re-breathing analyzer applies heated air to the material under test through an exhaust port in a probe and receives return air from an intake port in the probe. The exhaust and intake ports are placed to engage the material under test when the probe is in contact with the material. In one embodiment, the probe has a surface that is exposed through a top surface of a housing for the analyzer whereby the material under test is placed on the top surface for testing. The analyzer includes a differential temperature measuring instrument that determines the temperature of the return air, where an increase of the temperature of the return air above the temperature of the ambient air indicates the presence and quantity of re-breathing due to the material under test.

Re-breathing analyzer

An electronic circuit for connecting a standard analog telephone to the analog microphone and loudspeaker connections on a personal computer and for separating the talk signal from the combined talk/listen signal occurring at the telephone, effectively minimizing undesirable echo.

Telephone-computer interface

An automatic control system is shown to vary the mixture of fuel-to-air in a conventional internal combustion engine to minimize resulting pollutants and maximize engine efficiency and performance. The system senses manifold vacuum and engine acceleration and based, in part, upon such inputs forces the mixture leaner until an instability event is detected at which time the system rapidly forces the mixture richer at a predetermined rate and time period to overcome the instability. The mixture is then again gradually forced leaner. The rate of leaning is controlled by the vacuum pressure so that no leaning occurs at or near full throttle and the rate of leaning is decreased either gradually or incrementally as power requirements decrease. The air-to-fuel ratio may be adjusted by regulating the introduction of secondary air or by adjusting the quantity of fuel injection. A control system for individually monitoring and correcting fuel injection rates of individual cylinders is provided. Another embodiment of the control system includes an improved vacuum operated air valve for disabling the leaning function when the throttle is fully closed or fully open. The lean burn control system may be combined with either an exhaust gas recirculation system or a water injection system.

Lean burn mixture control system

An intermittent suction device for removing fluids from a patient where the duty cycle between the OFF and ON cycles is controlled by a magnetically susceptible diaphragm that switches back and forth between first and second positions, representing ON and OFF positions, by controlling the differential pressure across the diaphragm. The diaphragm is biased toward it first position by a permanent magnet that acts to attract the flexible diaphragm. The device has few moving parts and its duty cycle and overall cycle times are easily adjusted by the user.

Magneto-pneumatic intermittent suction device

A rotary type flowmeter having a variable orifice through which the flow to be measured is directed toward a rotatable needle. A preload is also applied and which may be varied as desired. By the use of the variable orifice and with the preload, the same flowmeter may be used for differing ranges of flow by minor adjustment and various indicating scales may be taylored to the particular flow being monitored.

Rotary flowmeter with variable inlet

An automatic control system is shown to vary the mixture of fuel-to-air in a conventional internal combustion engine to minimize resulting pollutants and maximize engine efficiency and performance. The system senses manifold vacuum and engine acceleration and based, in part, upon such inputs forces the mixture leaner until an instability event is detected at which time the system rapidly forces the mixture richer at a predetermined rate and time period to overcome the instability. The mixture is then again forced leaner. The rate of leaning is controlled by the vacuum pressure so that no leaning occurs at or near full throttle and the rate of leaning is decreased as power requirements decrease Further, secondary air is introduced substantially tangentially to the primary air/fuel flow to maximize mixture between the primary and secondary flows.

A bistable fluidic switch is switched from its stable state by a pin inserted in the power nozzle of the bistable fluidic switch, the pin being controlled by an electromagnetic actuator which is controlled from an electronic computer. The fluidic switch element has a cross-over type interaction region and a common outlet leading to a pair of output passageways, one of which returns fuel to the supply tank, and the other of which leads to the air intake manifold of the engine. Air is introduced into the output passageway leading to the engine so as to air atomize the fuel before injection of same into the air intake manifold.

Fuel injection system

The present invention relates to a two stage venturi for a catalytic burner wherein a large exit aperture size and a small air entrainment opening are used to provide a low velocity, rich fuel/air mixture for the pre-heating process followed by a small exit aperture size and a large air entrainment opening to provide a high velocity, lean fuel/air mixture for the catalytic combustion process. Concentric rotating sleeves are used to vary the size of the exit apertures and the air entrainment openings.

Catalytic burner with dual mode venturis

An adaptive charge mixture control for an internal combustion engine includes four input signals supplied to an OR gate to generate a net 'go rich' signal supplied to a servo motor controlling an air/fuel charge mixture control valve for an internal combustion engine. The servo is also supplied with a 'go lean' fixed signal tending to lean out the air/fuel mixture. The four 'go rich' signals include a first signal derived from a comparison of engine speed with a predetermined minimum (i.e., idle) level; a second signal derived from comparing throttle positions with a preset minimum throttle position; a third signal derived from comparing engine deceleration rate with a preset engine deceleration rate; and a fourth signal derived from a measurement of engine instantaneous power output.

Adaptive charge mixture control system for internal combustion engine

A catalytic stove is provided comprising a mixing chamber having one end adapted to receive a fuel can and an opposite end provided with a diffuser. A plate provided with a grid of between 200 and 400 openings per square inch extends across the exit end of the diffuser. A catalytic surface is coated on the exit portion of the plate. The catalyst is selected from the group consisting of platinum, palladium, rhodium and iridium.

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Columbia, MD, United States of America

Michael D Leshner