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Class 73/720 - Strain gauge


Subclass of Class 73 - Measuring and testing
Definition: Subject matter wherein the stress and/or strain in
No. of patents: 208
Last issue date: 04/17/2012


          6  
NumberTitleIssue Date
4146875Pressure 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
4072058Differential 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
4058788Differential 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
4056008Transducing 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
4006640Seal 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
3981198Transducing 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
3971364Catheter 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
3950996Fluid 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
          6  
 
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