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| Number | Title | Issue Date |
| 7194910 | Digital output MEMS pressure sensor and method A method and pressure-sensor system provide a digital-frequency output linearly proportional to a sensed pressure. The system comprises a MEMS pressure-sensing element to provide a pressure-sensing output and voltage-to-frequency converter provide the digital-freque... | 03/27/2007 |
| 7034700 | Solid state electronic pressure switch An electronic single pole double throw switch has two states. In each state, one of the lamps is on and the other lamp is off. In the electronic switch, the voltage, which is at the output terminal of the lamp that is off is utilized to drive a low voltage regulator... | 04/25/2006 |
| 4825699 | Non-deflectable adjustable bourdon gauge A bourdon gauge having a connection piece at the end of a bourdon tube for pivotably urging a link which in turn is connected to the arced arm of a sector plate. One end of an adjustment plate is frictionally secured and urged by an adjustment screw near ... | 05/02/1989 |
| 4818994 | Transmitter with internal serial bus An industrial process control transmitter has a modular construction, with a detector module and an output module electrically connected together by a serial bus. The output module includes a microcomputer, a modem for digital communication over the two-w... | 04/04/1989 |
| 4718278 | Pressure transducer with improved calibration A pressure transducer comprises a movement which has separate span and set-point calibrations. A subsequent calibration of the span does not adversely influence a previous calibration of the set-point. Sensed pressure is reflected as arcuate motion of a c... | 01/12/1988 |
| 4682499 | Pressure transmitter An improved pressure transmitter having a body with signal pressure responsive means and output pressure means having pressure responsive means, a supply of fluid pressure to said output pressure means, and adjusting means interposed between said signal p... | 07/28/1987 |
| 4517848 | Apparatus for measuring forces An apparatus for measuring forces comprises a coil spring within a body; a movable part within the body, the movable part being subjected to the action of the force to be measured and being in contact with one end of the coil spring; a needle on a dial wh... | 05/21/1985 |
| 4502333 | Three force balanced mechanism In a three force balanced mechanism of the type comprising a floating pivot, an input force transmitting member, a feedback force transmitting member, one end of these members being connected to the floating pivot and a flexible span setting member with o... | 03/05/1985 |
| 4361046 | Calibration adjustment for gauge instruments An elongated actuator pin in a pressure gauge extends from a fixed end to a free end to interact with the amplifier for enabling pivotal motion thereof to translate Bourdon displacement to an output pointer. A clamp slideably mounted on the actuator pin i... | 11/30/1982 |
| 4242914 | Pressure transducer A pressure transducer comprises a bellows as the pressure sensing element and a variable inductance coil whose inductance is made to vary as a function of pressure sensed by the bellows. Motion is transmitted between the bellows and a plunger associated w... | 01/06/1981 |
| 4240297 | Pressure gauge for sphygmomanometers A pressure gauge for sphygmomanometers, having a pressure capsule with a diaphragm wall, a pointer on a rotatable spring-biased pointer shaft, and a drive mechanism connecting the diaphragm wall to the pointer shaft by picking up and magnifying the displa... | 12/23/1980 |
| 4063459 | Variable-span pressure gauge A variable-span pressure gauge adapted to be calibrated over a wide pressure range, depending upon particular installation requirements relating to the size of the tank and type of liquid to be stored therein, and wherein the pressure to be measured is in... | 12/20/1977 |
