Quotables
"If you build a better mousetrap, you will catch better mice."
George Gobel
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.
| Number | Title | Issue Date |
| 5264768 | Active hand controller feedback loop An active hand controller system is provided wherein a feedback loop detects the position of a control stick to control a motor driving the control stick to thereby provide certain force feel characteristics to the control stick. The feedback loop include... | 11/23/1993 |
| 4869975 | Overvoltage control circuit for a reserve battery An overvoltage control circuit for a reserve battery includes a current limiting resistor connected in series with a thermal-lag type circuit interrupter such as a thermal-lag fuse or circuit breaker. The series combination is connected across a selective... | 09/26/1989 |
| 4861951 | Rotary switch with indexing structure mounted to a printed circuit board A printed circuit board mounted rotary electrical switch has a rotatable electrical contact carrier mounted for rotation within a cup-shaped housing and carrying indexing and rotation limiting devices cooperating with the housing. An electrical contact st... | 08/29/1989 |
| 4860266 | Method for operating a transmitting/receiving circuit and a circuit utilizing the method A transmitting/receiving circuit for an acoustic transducer (W1, W2) wherein the transmitting transducer (W1) is sequentially controlled by different modulated carrier frequencies (f1, f2), where the control is first matched to the inherent frequency (f1)... | 08/22/1989 |
| 4855674 | Method and a process control system using the method for minimizing hunting A method for process control to minimize hunting using a controller wherein a PID arithmetic operation is performed with respect to a deviation of a setting parameter and a processed variable fed back from a process, and a resultant manipulation variable ... | 08/08/1989 |
| 4852925 | Lamp replacement tool A lamp replacement tool which provides for positively captivating lamps for ease of removing or inserting lamps from or into the type of a lamp housing that forms part of a flush mounted push button switch used in aircraft cockpit control panels. The lamp... | 08/01/1989 |
| 4845435 | Sensor fault detector A sensor fault detector for detecting a missing or shorted environment condition sensor of a plurality of sensors includes a sensor circuit for supplying a concurrent output signal from each sensor, a reference voltage circuit for supplying a predetermine... | 07/04/1989 |
| 4841777 | Pressure transmitter assembly A pressure transmitter assembly includes a laminated ceramic structure for providing fluid passages as well as a support for a pressure sensor, electronic circuitry, fluid barrier diaphragms and input process fluid connections. The laminated structure is ... | 06/27/1989 |
| 4841296 | Two-wire transmitter A two-wire transmitter having a detecting section for detecting a physical variable to be measured to produce a detection output, first and second constant voltage devices connected in series with a two-wire transmission path, a signal processor driven by... | 06/20/1989 |
| 4836442 | Compensation circuit for sensor lag to reduce undershoot and overshoot A compensation circuit for sensor lag uses a sensor temperature signal modification circuit to provide a modified sensor temperature signal for subsequent use in controlling the sensed temperature. The compensation circuit digitally compares a current sen... | 06/06/1989 |
| 4831375 | Two-wire communication apparatus A communication apparatus inserted in parallel in a two-wire communication line of a two-wire measuring instrument which consists of a transmitter and a receiver connected to each other through the two-wire communication line and transmits a process value... | 05/16/1989 |
| 4825704 | Fluid flow speed measuring apparatus A fluid flow speed measuring apparatus comprising a first pipe having an opening exposed into a fluid to be measured, a direction of the opening having an angle larger than a critical negative pressure angle, a second pipe having an opening exposed into t... | 05/02/1989 |
| 4820915 | Color sensor with amorphous pin structure A color sensor has a layered body obtained by stacking a first photoelectric sensor which is constituted by an amorphous semiconductor having a "PIN" structure and a spectral sensitivity which has a peak with respect to blue light and a second photoelectr... | 04/11/1989 |
| 4820887 | Membrane keyboard blockout apparatus A membrane keyboard blockout apparatus for a keyboard having an array of a plurality of flexible key members in respective ones of a plurality of apertures arranged in a grid forming the keyboard includes a cover plate dimensioned to span a flexible key m... | 04/11/1989 |
| 4819051 | Compensated rotary position encoder An angular position encoder utilizes Moire fringes formed by illuminating regions of coded images arranged circumferentially on wheels rotatable in accordance with angles to be encoded. Movement of the Moire fringes from a reference position is detected a... | 04/04/1989 |
| 4812945 | Method and apparatus for providing autoranging for an AC/DC power management circuit for DC solenoid actuators A method for providing a power management for a DC solenoid actuator includes the steps of initially supplying a first number of DC current pulses to the actuator and after a first time interval reducing the number of pulses applied to the solenoid in dir... | 03/14/1989 |
| 4809355 | Method for operating a transmitting/receiving circuit and an apparatus for implementing the method A method for operating a transmitting/receiving circuit for ultrasonic signals includes the steps of producing a carrier frequency by a voltage-controlled oscillator having an output frequency controlled in accordance with a temperature dependency of an i... | 02/28/1989 |
| 4806940 | Navigation mode selection apparatus An aircraft navigation system supporting a plurality of navigation modes. An error estimator for each navigation mode provides an estimated navmode error signal representative of an estimate of the error in the position signal generated by the associated ... | 02/21/1989 |
| 4806905 | Transmitter for transmitting on a two-wire transmitting line A transmitter for repeatedly transmitting a measured value in the form of a digital signal through a two-wire transmission line, includes a receiving unit for receiving a digital command signal from a communicator through the two-wire transmission line, a... | 02/21/1989 |
| 4804272 | Cold junction compensation apparatus A cold junction compensation apparatus utilizes a block of thermally conductive material, such as copper, having a mounting flange extending radially outwardly which is attached to a terminal strip by a machine screw to maintain the screw temperature subs... | 02/14/1989 |
| 4803135 | Pressure Activated reserve battery A pressure activated reserve battery, capable of being activated by increasing external or environmental seawater pressure as the device is lowered or sinks to depth, without benefit of an external pressure hull. Pressure compensation, balancing of extern... | 02/07/1989 |
| 4803413 | Magnetic isolating and pointing gimbal apparatus A magnetic isolation and pointing gimbal apparatus provides support functions and multidegree of freedom pointing capability and simultaneous six degree of freedom bi-directional disturbance isolation. This is accomplished by integrating the support, isol... | 02/07/1989 |
| 4800375 | Four color repetitive sequence matrix array for flat panel displays A four color repetitive sequence matrix array for flat panel displays is formed by establishing a repetitive sequence with pixels of four different colors arranged in the rows of the matrix. The sequence commences with a different color in each row, there... | 01/24/1989 |
| 4800141 | Reserve activated electrochemical cell A reserve activated electrochemical cell uses a frangible glass ampule for storing an electrolyte. The ampule is located within a first cylindrical cup-shaped metal housing containing a pair of cell electrodes. One of the electrodes is formed by an electr... | 01/24/1989 |
| 4799159 | Digital automatic flight control system with disparate function monitoring A channel of an automatic flight control system utilizes dual identical digital processors. Active task modules and monitor modules therefor are included in the processors. The active task modules and the monitor modules are arranged so that an active tas... | 01/17/1989 |
| 4797669 | Receiver A receiver for receiving a reception signal defining a measured value is connected to a two-wire transmission line used for transmitting a digital command signal from a communicator, a digital measured value signal from a transmitter, and a response signa... | 01/10/1989 |
| 4790352 | Slow opening and fast closure gas valve A slow opening and fast closing gas valve includes a valve seat and a valve closure member arranged to respond to a gas pressure to seal aganst the valve seat to close the valve to an input gas flow therethrough. In order to open the valve, the gas exerti... | 12/13/1988 |
| 4790142 | Method for minimizing cycling losses of a refrigeration system and an apparatus using the method A refrigeration system control for minimizing cycling losses of a refrigeration system having an indoor coil, an indoor coil fan, an outdoor coil, an outdoor coil fan, a refrigerant line between one end of the indoor coil and one end of the outdoor coil, ... | 12/13/1988 |
| 4787250 | Method of producing a uniform fluid-tight seal between a thin, flexible member and a support and an apparatus utilizing the same A method of producing a fluid-tight seal between a thin, flexible member and a member support including the steps of providing a braze material receiving recess on an external surface of the member support having a depth to accommodate excess braze materi... | 11/29/1988 |
| 4785846 | Gas control apparatus with a pressure regulator A gas control apparatus with a pressure regulator selectively controls the setpoint of the regulator by an electrical current between a minimum and a maximum value of the gas outlet pressure. A diaphragm of the regulator is exposed to the pressure to be c... | 11/22/1988 |
| 4787041 | Data control system for digital automatic flight control system channel with plural dissimilar data processing A direct memory access (DMA) system with a single bus architecture for controlling data transfers and storage between plural digital processors and plural Input/Output devices. Limiters are included for disabling access to the bus of a processor whose acc... | 11/22/1988 |
| 4782703 | Temperature compensated pressure signal generator A differential pressure signal generator uses a pressure sensor arranged to sense differential pressure between a pair of right and left pressure measuring chambers in right and left portions of a signal generator body to which high and low pressure-side ... | 11/08/1988 |
| 4783621 | Apparatus for evaluating the distance of an object An apparatus for detecting the distance of an object from a signal transmitter during radiation of a transmitter signal uses a first capacitor which is initially short-circuited by means of a first switch and subsequently is charged from a constant curren... | 11/08/1988 |
| 4780792 | Sliding circuit card ejection apparatus and method An electronic component module is mounted on a motherboard. An elongated slot is formed in the module. A pair of ejector handles are mounted with the slot. A first leg portion of each handle is mounted on one side of the slot and a second leg portion is m... | 10/25/1988 |
| 4778074 | Composite material and metal canister A composite material and metal canister has a cylindrical corrosion resistant metal shell and a composite material bulkhead within the shell which provides corrosion resistance and minimal weight coupled with the ability to withstand high internal pressur... | 10/18/1988 |
| 4776514 | Two wire line voltage thermostat A two wire line voltage thermostat has first and second terminals for receiving line voltage power and for connection to a load, a transformer having a current primary winding, a voltage primary winding and a secondary winding, a primary controller connec... | 10/11/1988 |
| 4775795 | Method and apparatus for detecting very small concentrations of gases in a gas mixture A method for detecting very small concentrations of gases in gas mixtures passed as a gas stream through a measuring cell having a chamber through which the gas stream flows through, a drift zone provided between an inlet and an outlet of the chamber, a g... | 10/04/1988 |
| 4772952 | Film magazine For the evaluation of a film independent of its predetermined recording velocity, a film storage drum is provided on which a film take-up reel is mounted. The film storage drum and the film take-up reel are capable of rotating with respect to each other i... | 09/20/1988 |
| 4768382 | Method of producing a uniform fluid-tight seal between a thin, flexible member and a support and an apparatus utilizing the same A method of producing a fluid-tight seal between a thin, flexible member and a member support including the steps of providing a pair of spaced apart braze material receiving recesses on an external surface of the member support having a combined depth to... | 09/06/1988 |
| 4764764 | Write-protect apparatus for bit mapped memory A pattern write protect system approximates a memory area for data entry with a multiplicity of rectangles and determines when a point for entry is within the window by establishing a relative position of the address point coordinates to the coordinates o... | 08/16/1988 |
