Leak detection system and method for fluid delivery piping
The invention relates to a leak detector system and method for detecting a leak in fluid delivery piping. More specifically, the invention relates to such a system and method particularly adapted as a... Read More
Inventors: Gerstenmaier, William J.; Todd, John A.;, Assignee: Dresser Industries, Inc. (Dallas, TX) |
Level sensor for ink bag
I claim: 1. An ink device for use with an ink-jet printer comprising (a) a rigid rectangular container, having a top, four sides, and a bottom, said top having a transparent area therein and said bott... Read More
Inventors: Hamlin, Mindy;, Assignee: Hewlett-Packard Company (Palo Alto, CA) |
Residual recording material amount detector for laser printer
The present invention has been made in view of the above circumstances. Accordingly, the object of the invention is to provide a novel residual recording material amount detector allowing the toner co... Read More
Inventors: Maruyama, Akira; Niki, Hiroshi; Nagai, Reiko;, Assignee: Seiko Epson Corporation (Tokyo, JP) |
Remaining ink detection in an ink jet recording apparatus
The object of the present invention is to provide an ink jet recording apparatus which enables to execute automatically operations with respect to the replacement of the recording head and the ink sto... Read More
Inventors: Nakajima, Hiroharu; Shimoyama, Noboru; Sugiyama, Noriyuki; Tanaami, Yasufumi;, Assignee: Canon Kabushiki Kaisha (Tokyo, JP) |
Image forming device with end of life messaging for consumables
OF THE INVENTION Referring now to the figures, an image forming device 10 is shown in schematic representation in FIG. 1. While this representation is indicative of a laser type printer it should be ... Read More
Inventors: Christensen, K. Trent; Cheney, Douglas A.;, Assignee: Hewlett-Packard Company (Palo Alto, CA) |
Method and apparatus for leak testing
Referring now more particularly to the drawings, and especially FIG. 1, air from a pressure source is fed into a line 12 through a pressure regulator 14 to one side of a differential pressure sensor ... Read More
Inventors: Fedder, Stephen C.;, Assignee: Sweet; William L. (Marine City, MI); Skudrna; Anthony J. (Harsens Island, MI) |
Positive displacement pump apparatus and methods for detection of leaks in pressurized pipeline systems
It is an object of this invention to provide a method, and a device, for the reliable detection of small leaks in pressurized pipelines containing liquids, including water, petroleum, solvents, and ot... Read More
Inventors: Maresca, Jr., Joseph W.; Starr, James W.; Wilson, Christopher P.;, Assignee: Vista Research, Inc. (Mountain View, CA) |
Technique of compensating for capacitive effects in conductivity measurements
The present invention is an improved method and circuit for providing an output which is representative of conductivity (or resistivity) sensed by a cell. The present invention is based upon the recog... Read More
Inventors: Kaiser, Donald F.;, Assignee: Beckman Industrial Corporation (Cedar Grove, NJ) |
Methods and circuits for measuring the conductivity of solutions
It is therefore an object of the invention to provide a circuit and methods for measuring the conductivity of solutions that minimizes the effects of series and parallel capacitance inherent in cells ... Read More
Inventors: Blades, Frederick K.;, Assignee: Anatel Corporation (Boulder, CO) |
Ratio feed detergent controller and method with automatic feed rate learning capability
In summary, the present invention is a chemical dispenser controller for use with a device, such as the conductivity sensor in a dishwasher's wash tank, that measures the concentration of the dispense... Read More
Inventors: Chan, Wai Y. C.; Livingston, James W.;, Assignee: Diversey Corporation (Ontario, CA) |
Water purity testing system having reversing polarity
Accordingly, it is a general object of the present invention to provide an improved water purity testing system. It is a more particular object of the present invention to provide an electrically oper... Read More
Inventors: Brenn, Eric W.;, Assignee: |
Process and measurement systems for measuring physical quantities of poorly conductive and nonconductive fluids
The object of the invention is to develop a process designed for poorly conductive and nonconductive fluids such as rolling oil, lubricating oil, hydraulic fluid, brake fluids and fuels and measuremen... Read More
Inventors: Kuipers, Ulrich; Barten, Axel; Kohlrausch, Arnt;, Assignee: Achenbach Buschhutten GmbH (Kreuztal, DE) |
Injection device
The object is achieved by means of an injection device according to the present invention, which is characterized in that it comprises a holding device which is changeable between a releasing position... Read More
Inventors: Blomberg, Anders;, Assignee: |
Successive delivery multiple barrel syringe
What is claimed is: 1. A successive delivery multiple barrel syringe comprising a body having a plurality of parallel bores, a plurality of individually-depressible plungers extending respectively int... Read More
Inventors: Kozam, George; Romanelli, Pat;, Assignee: |
Formulation chamber with exterior electrotransport delivery device
I claim: 1. In a drug delivery apparatus comprising a fluid reservoir and means connected thereto for conveying a beneficial drug to a recipient, the improvement in the drug delivery apparatus, compri... Read More
Inventors: Theeuwes, Felix;, Assignee: Alza Corporation (Palo Alto, CA) |
Motion control system for an inductively controlled multi-phase motor
Simplified circuitry is used for controlling a stepper motor in a stepping or continuous rotation mode. In the preferred embodiment, the stepper motor drives the thermal printhead of a thermal printin... Read More
Inventors: Bray, William Edward;, Assignee: Texas Instruments Incorporated (Dallas, TX) |
Power control system for multiple pumps
We claim: 1. A power control system for multiple pumps including more than two variable volume pumps, at least two of the pumps having the same capacity, all of the pumps being driven by a single engi... Read More
Inventors: Kosodo, Hiroshi; Tomotsugu, Heiji; Kudo, Hiroshi;, Assignee: The Japan Steel Works Ltd. (Tokyo, JP) |
Method of and apparatus for the measurement of the refractive-index profile in monomode optical fibres
We claim: 1. A method of determining the refractive index profile in a monomode fiber, in which an image of a fiber output face is formed and a radial scanning of said image is effected, said method c... Read More
Inventors: Coppa, Gianni; Di Vita, Pietro;, Assignee: Cselt - Centro Studi E E Laboratori Telecommunicazoni SpA (Turin, IT) |
Die casting controlling method
OF PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic sectional view of a die casting machine to which is appli... Read More
Inventors: Hatamura, Yotaro;, Assignee: |
Apparatus and method for protecting a transducer
What is claimed is: 1. A system for protecting a transducer connected thereto by damping, through a pressurized fluid, a signal to be converted by the transducer, said system comprising: a transducer ... Read More
Inventors: Falcon, Wayne J.;, Assignee: Halliburton Services (Duncan, OK) |
Draft tube for wood burning stoves
This invention features a draft tube nozzle arrangement for a wood burning stove, comprising at least one draft tube extending vertically downward from the top of the stove and terminating at a point ... Read More
Inventors: Leavens, Richard; Evans, Arthur D.;, Assignee: Mohawk Industries, Inc. (Adams, MA) |
Optical emission line monitor with background observation and cancellation
In view of the above need it is an object of this invention to provide an optical monitoring system in which a selected spectral emission line may be detected and measured in the presence of interferr... Read More
Inventors: Goff, David R.; Notestein, John E.;, Assignee: The United States of America as represented by the United States (Washington, DC) |
Method of measuring the refractive index profile of optical fibers
What is claimed is: 1. A method of measuring the refractive index profile of an optical fiber comprising a encased within a surrounding cladding and having a protective coating thereover, comprising t... Read More
Inventors: Hatton, William H.; Buckland, Eric L.; Nishimura, Masayuki;, Assignee: Sumitomo Electric Research Triangle, Inc. (Research Triangle Park, NC) |
Method of arc welding with reverse side cooling for obtaining highly tough large-diameter welded steel pipes
A main object of the present invention is to manufacture a thick-walled welded steel pipe of higher toughness by using the currently marketed steel plates and welding materials intended for pipe lines... Read More
Inventors: Yamaguchi, Tetsuo; Taira, Tadaaki; Hirabayashi, Kiyoteru; Nishino, Yukio;, Assignee: Nippon Kokan Kabushiki Kaisha (Tokyo, JP) |
Gas turbine engine fuel control systems
I claim: 1. A gas turbine engine fuel control system of the kind comprising a speed governor and means for supplying to the speed governor a speed datum signal, such means including an acceleration co... Read More
Inventors: Eves, Richard John;, Assignee: Lucas Industries Limited (Birmingham, EN) |
Fuel control for a multi-engine gas turbine installation
We claim: 1. An electronic fuel control for a multi engine gas turbine installation comprising a plurality of control channels for the respective engines, each control channel including an error signa... Read More
Inventors: Janes, Roderick Stewart; Lloyd, Maurice Edward;, Assignee: Lucas Industries Limited (Birmingham, GB2) |
Fuel control for controlling helicopter rotor/turbine acceleration
We claim: 1. An engine control for a free turbine gas engine, comprising: speed means for providing an actual speed signal indicative of the speed of the free turbine; fuel valve means responsive to a... Read More
Inventors: Zagranski, Raymond D.; Howlett, James J.;, Assignee: Chandler Evans Inc. (West Hartford, CT) |
Internal combustion engine shut-off device
The present engine shut-off device overcomes the disadvantages of these two conventional types of shut-off controls, by providing a shut-off device which is instantaneously activated and causes shut-o... Read More
Inventors: Fox, Wayne S.;, Assignee: Kawasaki Motors Corporation, U.S.A. (Santa Ana, CA) |
Instruments for use in the measurement of gases in body fluids
I claim: 1. An instrument for use in the measurement of gases in body fluids comprising a flexible catheter having an inner tube within an outer tube, the tubes being of such diameters that there is a... Read More
Inventors: Delpy, David T.;, Assignee: National Research Development Corporation (London, GB2) |
Control system for the quantification of the quality of fluidization using a thermocouple
It has been discovered that slight fluctuations, less than 1.degree. F., of operating temperature within an operating fluid-bed reactor containing a supported catalyst performing at peak efficiency, n... Read More
Inventors: Lenczyk, John P.;, Assignee: The B. F. Goodrich Company (Akron, OH) |
Liquid Purification 
