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| Number | Title | Issue Date |
| 4146875 | Pressure sensing device A pressure sensing device comprising a ring surrounding or adapted to surround a body subjected to internal pressure; means to connect the ring physically to the body at spaced locations, the connecting means transmitting to the ring dilation and contract... | 03/27/1979 |
| 4072058 | Differential pressure transmitter with pressure sensor protection A differential pressure to electrical signal transmitter has a pair of barrier diaphragms and one or two central control diaphragms located between the barrier diaphragms. A chamber on the outside of one barrier diaphragm is pressurized with a first fluid... | 02/07/1978 |
| 4058788 | Differential pressure transducer First and second pressure sensitive diaphragm assemblies are mutually spaced at a substantially constant distance by a rigid member, whereby the diaphragm assemblies flex in unison in response to imposed pressure differentials. A longitudinally rigid but ... | 11/15/1977 |
| 4056008 | Transducing methods and transducers A fluid pressure transducer comprises a housing having a fluid chamber bounded by a diaphragm. A strain gage transducer signal generating device is located in that fluid chamber. This signal generating device is protected from the effects of the fluid in ... | 11/01/1977 |
| 4006640 | Seal for process pressure to current transmitter A pressure to current transmitter has an internal fill fluid chamber separated from a process fluid by a diaphragm and backup plate. A fluid-tight seal is achieved between the backup plate and the wall of the fluid chamber by a continuous weld bead while ... | 02/08/1977 |
| 3981198 | Transducing methods and transducers An apparatus for providing a signal in response to a force producing physical condition comprises a laterally flexible tubular enclosure having two opposite ends, and a housing for that tubular enclosure. Bothe ends Both the tubular enclosure are maintain... | 09/21/1976 |
| 3971364 | Catheter tip force transducer for cardiovascular research A force transducer for measuring dynamic force activity within the heart of a subject essentially consists of a U-shaped beam of low elastic compliance material. Two tines extend from the beam's legs and a long coil spring is attached to the beam. A strai... | 07/27/1976 |
| 3950996 | Fluid pressure transducer A transducer useful to measure fluid pressure over a wide range incorporates dual diaphragms for biasing a shaft whose axial motion operates a motion sensor, the movement of one diaphragm limited in one direction of shaft axial movement, and the movement ... | 04/20/1976 |