U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Did You Know...

...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 137/805 - And causing change or correction of sensed condition


Subclass of Class 137 - Fluid handling
Definition: Device or system wherein the signal or impulse activates
No. of patents: 38
Last issue date: 08/21/2007


NumberTitleIssue Date
7258130Integrated jet fluid level shutoff sensor and fuel tank vent for vehicles
The integrated jet fluid level shutoff sensor vent assembly is designed for use in conjunction with a non-pressurizing tank fast fill system, and to support automatic shutoff fast fill refueling of vehicles. The integrated jet fluid level shutoff sensor vent assembl...
08/21/2007
7089938Pneumatic oxygen conserving device
A pneumatic oxygen conserving device uses a portion of gas exiting its main valve to interrupt delivery of the gas. Gas is dispensed upon inhalation and is interrupted by means of suitable pneumatic connections between the device's delivery system and its sensing sy...
08/15/2006
7077133Oxygen enriching apparatus, controller, and recording medium
A small oxygen enriching apparatus which can supply oxygen-enriched gas at high flow rate without imparting unnatural sensation to a user, as well as a controller and recording medium therefore. In step 100, a judgment is made as to whether a flow rate set by...
07/18/2006
7066175Portable gas powered positive pressure breathing apparatus and method
A portable positive pressure breathing apparatus includes a demand valve with a supply inlet port adapted to be connected to a pressurized source of oxygen and an outlet port adapted to be connected to the inlet of a patient's breathing appliance. The demand valve f...
06/27/2006
7066180Method and system for measuring airflow of nares
A method and system for measuring airflow through nares. One exemplary embodiment comprises: measuring an attribute of an airflow through a first naris; measuring an attribute of an airflow through a second naris; wherein measuring the attribute of the airflow throu...
06/27/2006
7055541Method and mechanism for producing suction and periodic excitation flow
A method and mechanism of producing a suction and periodic excitation flow. The method includes providing fluid flow from jet port with diameter dl at a controlled input pressure (Pin), directing the flow to a conduit with diameter d2, >d1, allowing additional fluid...
06/06/2006
7037280Foot massaging system
A submerge massaging system controlled by a no-moving part backload responsive fluidic switch. ...
05/02/2006
7007692Method and system of sensing airflow and delivering therapeutic gas to a patient
Methods and related systems for individually sensing airflow in the breathing orifices of a patient, and preferentially delivering therapeutic gas to those breathing orifices based on the amount of airflow sensed. ...
03/07/2006
6924733Hose separation transmitter system and methods
A hose separation transmitter system includes a shock sensor and a transmitter that are secured to the delivery hose. If the hose becomes disconnected, the shock sensor will generate a shock signal when the hose falls to the ground and the transmitter will respond t...
08/02/2005
6910482Self-calibrating supplemental oxygen delivery system
An on demand supplemental oxygen delivery system that is self-calibrating includes a tank containing a supply of oxygen and a nasal cannula through which the oxygen may be provided to a patient when the system solenoid valve is in the open condition. When the valve ...
06/28/2005
6615856Remote valving for microfluidic flow control
A method of controlling fluid flow within a microfluidic circuit using external valves and pumps connected to the circuit is disclosed. The external valves and pumps, which are not a part of the microfluidic substrate, control fluid pumping pressure and t...
09/09/2003
6546785System and method for dynamic lubrication adjustment for a lubrication analysis system
A system and methodology is provided for dynamically adjusting fluids that operate as a lubricant in a machine, and for dynamically controlling fluid properties of a fluid that is operational in situ in a machine. The system includes a control module havi...
04/15/2003
5090442Field repairable apparatus for use in filling containers to a predetermined level
An apparatus is disclosed for filling a container to a predetermined level with liquid provided from an external liquid supply means. The apparatus includes a main valve and a main valve seat for controlling the supply of liquid to the container. A lower ...
02/25/1992
5048557Main valve and seat for use in filling containers to a predetermined level
An improved apparatus used in a system for filling containers with a required liquid to a predetermined level are disclosed. The apparatus includes an improved main valve means for controlling the flow of liquid through the apparatus and into the containe...
09/17/1991
4924912Electrofluidic pin transducer with stable null setting
The invention provides an electrofluidic pin transducer (64) which maintains a stable null setting for a control pin (46). In the control mode of operation, the pin (46) is rotatable in a conventional manner about a first axis which is perpendicular to th...
05/15/1990
4854219Optical control system
An optical actuator position demand signal through optic fiber 14 is focused on one side 32 of optical fluidic interface 16. A second optical signal through optic fiber 56 is attentuated 50 in proportion to actuator 38 position and focused on a second sid...
08/08/1989
4852613Fluidic pump control systems
A control system for a single acting or double acting fluidic pump comprising a detector stage (1), a power amplifiction stage (2) and a primary element stage (3). The detector stage comprises bistable fluidic amplifiers for detecting pressure changes in ...
08/01/1989
4842162Apparatus and method for dispensing fluid materials using position-dependent velocity feedback
Apparatus and method for dispensing fluid materials wherein the fluid is discharged from a nozzle at a rate controlled by a metering valve having a seat and a stem moveable with respect to the seat to modulate the flow. A servo-actuator connected in a fee...
06/27/1989
4817863Vortex valve flow controller in VAV systems
In variable air volume systems of buildings, a vortex valve is used for varying the volume of the air moving through the system....
04/04/1989
4712173Multicontrol process control system
The present invention uses an input multiplexer for selecting a plurality of input signals, a fluid multiplexer for selectively delivering a control output to a plurality of devices to be controlled, a detecting multiplexer for selecting detected signals ...
12/08/1987
4687013Flueric partial pressure sensor
A flueric partial pressure sensor (10) includes a flueric bridge sensor (10a) having two bridge legs (11, 12) adapted for sensing a reference-gas and a sample-gas. A linear resistor (14, 15) and an orifice resistor (16, 17) are incorporated in each leg an...
08/18/1987
4617970Fluidic sensor of objects
A fluidic sensor of objects comprising a body in which there are mounted an emitting nozzle connected to a feeding chamber connected to a feeding conduit, and an intake nozzle disposed in the area defined by the emitting nozzle and connected to an outlet ...
10/21/1986
4570675Pneumatic signal multiplexer
An invention is disclosed in which a fluidic counter generates fluidic switching signals in response to a fluidic oscillator for sequentially activating a plurality of fluidically activated electrical switches for multiplexing a plurality of electrical co...
02/18/1986
4527593Apparatus and system for filling one or more containers with a liquid to a predetermined level
An apparatus and system for filling containers with a required liquid to a predetermined level are disclosed. The apparatus includes a main valve means for controlling the flow of liquid through the apparatus and into the container; a fluid amplifier mean...
07/09/1985
4484601Liquid level control device
A liquid level control device for controlling the flow of liquid into a reservoir, storage tank or the like, incorporating automatic shut-off characteristics. The device includes nozzle means including a fluid amplifier for automatically closing valve mea...
11/27/1984
4332041Pressurized drain for toilet waste tank
A drainage apparatus for an aircraft lavatory system includes a waste holding tank that receives waste from the individual toilet units. The waste holding tank has a pressurization port and a waste drain opening formed in an upper portion thereof. A blowe...
06/01/1982
4278110Demand responsive flow controller
A demand responsive flow controller for use in a respiration system for the administration of oxygen from a pressurized source through a cannula to a patient is disclosed. A flow path between the pressurized source and the cannula is opened and closed by ...
07/14/1981
4211363Fluidically-controlled air-conditioning system
The present invention is one that uses the novel feature of fluidics to control the flow of conditioned air in an air-conditioning system. More specifically, in one species of the invention, fluidic amplifier apparatus controls the flow of hot water into ...
07/08/1980
4202517Fluidic interface means
A means for interfacing between low pressure, low flow fluidic circuits and he high pressure, high flow input requirements of fluidic digital thrusters to control the roll, pitch or yaw rate of missiles is provided. Input pressures from the fluidic circuit...
05/13/1980
4202061Lavatory wastewater disposal system for aircraft
In an airplane having a pressurized passenger section, with a lavatory sink. The waste water from the lavatory sink is directed either to a toilet tank where it is stored, or to a drain mast line where it is discharged overboard during in-flight operation...
05/13/1980
4148334Liquid level control sytem
A flow regulator is disclosed for controlling liquid flow, for example, from a supply source to a receiving tank according to the liquid level in the tank. Specifically, a fluid interaction device communicating with the receiving tank causes a fluid press...
04/10/1979
4019697Fluidic approach power compensator control system
A fluidic control system which automatically schedules and controls power developed by an aircraft during landing approach operation. Fluidic signals are generated in relation to sensed aircraft flight parameters, and these signals are combined in a prese...
04/26/1977
3989187Air-conditioning system apparatus
The present invention relates to an air-conditioning system that employs fluidic principles to provide temperature control. A fluidic oscillator is utilized to control the conditioning process in which the imput of primary and secondary air to the system ...
11/02/1976
3986856Blowing apparatus having individual control of nozzles
A laminated stack has grooves on the faces of the laminations forming fluid amplifiers and control channels therefor. Pneumatic detectors are coupled with the control channels. The laminations are perpendicular to the path of travel of workpieces to be tr...
10/19/1976
3985398Fluidic antiskid circuit
A pneumatic wheel speed sensor provides pulse frequency signal proportional to wheel speed, the signal is converted to DC signal and differentiated and compared to commanded deceleration, error which causes modulation of brake pressure. Excessive decelera...
10/12/1976
3958412Fluidic gas turbine fuel control
A pure fluidic fuel control system for a gas turbine engine in which engine speed and compressor discharge pressure are sensed and utilized to control the flow of fuel to the engine. In the system an analog fluid signal proportional to engine speed is app...
05/25/1976
3946900Automatic liquid dispensing system
A system for dispensing a selected amount of liquid from apparatus such as a service station gasoline pump. Low pressure air is directed through air passages in response to valve means carried by the pump indicator dials. The amount desired to be dispense...
03/30/1976
3937398Conditioned air distribution system
An air distribution system supplies conditioned air to at least one zone to be conditioned and comprises a supply duct connected with a diffuser discharging into the conditioned zone. A modulating valve in the supply duct is provided with a bellows actuat...
02/10/1976
 
Sign InRegister
Username  
Password   
forgot password?