U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

High temperature pressure transmitter assembly

Patent 7036381 Issued on May 2, 2006. Estimated Expiration Date: Icon_subject June 25, 2024. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3701280

Gauge for remotely indicating the pressure of a subterranean formation
Patent #: 3968694
Issued on: 07/13/1976
Inventor: Clark

Differential pressure sensor capsule with low acceleration sensitivity
Patent #: 4120206
Issued on: 10/17/1978
Inventor: Rud, Jr.

Gauge for remotely indicating the pressure of a subterranean formation
Patent #: 4125027
Issued on: 11/14/1978
Inventor: Clark

Equivalent standard volume correction systems for gas meters
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Issued on: 12/09/1980
Inventor: Geery

Two wire transmitter for converting a varying signal from a remote reactance sensor to a DC current signal
Patent #: 4250490
Issued on: 02/10/1981
Inventor: Dahlke

Pressure sensor
Patent #: 4287501
Issued on: 09/01/1981
Inventor: Tominaga ,   et al.

Fluid flow totalizer
Patent #: 4414634
Issued on: 11/08/1983
Inventor: Louis ,   et al.

Method and apparatus for determining the mass flow of a fluid
Patent #: 4419898
Issued on: 12/13/1983
Inventor: Zanker ,   et al.

Specific gravity independent gauging of liquid filled tanks
Patent #: 4446730
Issued on: 05/08/1984
Inventor: Smith

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Inventors

Assignee

Application

No. 10876816 filed on 06/25/2004

US Classes:

73/708, With pressure and/or temperature compensation73/718, Capacitive73/724, Capacitive340/870.37, Capacitive transmitter338/42, Diaphragm73/861.02, Electrical73/301, With electrically controlled indicator73/721, PiezoresistiveD10/46, MEASURING, REGULATING OR INDICATING INSTRUMENT, OR CASING73/706, With protective separator73/756, Mounting and connectionD10/85, Pressure gauge340/870.21, Analog to digital function converter73/861.42, Using differential pressure73/861.04, Of selected fluid mixture component73/727, Piezoresistive374/208, HOUSING, SUPPORT, OR ADJUNCT340/626, PressureD10/52, Temperature, humidity, atmospheric condition (3)73/861.21, Caused by fluid interaction with obstacle73/431, INSTRUMENT CASING324/678, Including charge or discharge cycle circuit323/299, INPUT LEVEL RESPONSIVE73/723, With electrical readout324/115, Plural ranges, scales or registration rates340/870.18, Using a particular modulation (e.g., phase, frequency, or amplitude)340/870.11, Plural transmitters340/870.3, With particular transmitter (e.g., piezoelectric, dynamo)285/23, With holding means functioning only during transportation assembly or disassemblyD10/60, Element or attachment (4)361/816, Shielding335/206, Plural switchesD10/96, Volume, flow or rate363/89, With transistor control means in the line circuit326/15, Parasitic prevention in integrated circuit structure73/862.041, Responsive to multiple loads or load components29/593, Including measuring or testing of device or component part73/1.63, With reference source or attachment therefor375/295, TRANSMITTERS137/597, Multiple inlet with multiple outlet702/138, Pressure439/136, Movably mounted73/866.5, PROBE OR PROBE MOUNTING713/340, Having power source monitoring248/678, Base or platform370/461, Arbitration for access between contending stations714/43, Bus, I/O channel, or network path component fault439/652, Wherein the plug is combined with a plurality of the receptacles adapted to receive spaced-prong plug341/143, Differential encoder and/or decoder (e.g., delta modulation, differential pulse code modulation)709/253, BUSED COMPUTER NETWORKING702/89, Timing (e.g., delay, synchronization)702/121, Including multiple test instruments73/716Multiple and/or differential

Examiners

Primary: Lepkowitz, Edward
Assistant: Allen, Andre

Attorney, Agent or Firm

Foreign Patent References

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International Class

G02C 19/04

Abstract

A pressure transmitter assembly for measuring a pressure of a process fluid includes an isolation diaphragm assembly. A pressure sensor is spaced apart from the isolation diaphragm assembly to provide thermal isolation. A conduit extends from the isolation diaphragm assembly to the pressure sensor and is configured to carry isolation fill fluid.

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