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公开(公告)号：US5329809A
公开(公告)日：1994-07-19
申请号：US50796
申请日：1993-04-22
Applicant: Mark C. Sellnau , Robert G. Plyler , Andrew F. Rodondi
Inventor： Mark C. Sellnau , Robert G. Plyler , Andrew F. Rodondi
CPC classification number: G01L23/10
Abstract: A cylinder pressure sensor of the annular insert type disposed within an access well to measure the flexure of a first wall relative to a second wall along a response axis has low-cost components thereof requiring only simple sequential assembly in axial stacked fashion providing contaminant protection and electrical shielding of the sensing element.
Abstract translation: 设置在进入井内的环形插入物的气缸压力传感器测量沿着响应轴线相对于第二壁的第一壁的挠曲，具有低成本的部件，其仅需要轴向堆叠方式的简单顺序组装，从而提供污染物保护， 传感元件的电气屏蔽。
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公开(公告)号：US2655043A
公开(公告)日：1953-10-13
申请号：US3288848
申请日：1948-06-14
Applicant: AEROJET GENERAL CO
Inventor： WOLFE CHARLES M , SHULTISE QUIDO M , GROW CLYDE W
CPC classification number: G01L9/12 , G01L9/0072 , G01L23/125 , G01L23/32
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公开(公告)号：US2178471A
公开(公告)日：1939-10-31
申请号：US20318738
申请日：1938-04-20
Applicant: PHILIPS NV
Inventor： DE BRUIN SAKE LEENDERT
CPC classification number: G01L23/32 , G01L9/12 , G01L23/125
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公开(公告)号：US1523002A
公开(公告)日：1925-01-13
申请号：US59912522
申请日：1922-11-04
Applicant: DICKINSON THOMAS A
Inventor： DICKINSON THOMAS A
IPC: G01L23/32
CPC classification number: G01L23/32 , Y10T403/7066
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公开(公告)号：US11725998B2
公开(公告)日：2023-08-15
申请号：US16277415
申请日：2019-02-15
Applicant: STMicroelectronics S.r.l.
Inventor： Saverio Grutta , Enrico Rosario Alessi
IPC: G01L23/32 , G08B13/08 , G08B13/20 , H04M1/72454 , G08B29/18 , G08B13/16 , H04M1/72421
CPC classification number: G01L23/32 , G08B13/08 , H04M1/72454 , G08B13/1672 , G08B13/20 , G08B29/183 , G08B29/188 , H04M1/72421
Abstract: A method includes collecting, at a building opening, air pressure signals from a pressure sensor and sound signals from a sound sensor. The method also includes sensing pressure peaks occurring in the air pressure signals and sensing sound pulses occurring in the sound signals. A joint occurrence of a pressure peak in the air pressure signals and a sound pulse in the sound signals is indicative of an opening/closing event of the building opening.
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Patent Agency Ranking
公开(公告)号：US2729104A
公开(公告)日：1956-01-03
申请号：US6615448
申请日：1948-12-20
Applicant: CHARLES D HIRST
Inventor： SHUCK WAYNE L , HUBER WILLIAM J
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公开(公告)号：US2367866A
公开(公告)日：1945-01-23
申请号：US33125440
申请日：1940-04-23
Applicant: COSSOR LTD A C
Inventor： DENIS HUMPHREYS THOMAS , MATHIESON DODDS EDWIN
CPC classification number: G01L9/12 , G01L23/125 , G01L23/28 , G01L23/32
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公开(公告)号：US2113376A
公开(公告)日：1938-04-05
申请号：US9859536
申请日：1936-08-29
Applicant: NATHAN JANCO
Inventor： NATHAN JANCO
CPC classification number: G01L23/32 , G01L9/12 , G01L23/125
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公开(公告)号：US2001096A
公开(公告)日：1935-05-14
申请号：US65569833
申请日：1933-02-08
Applicant: BELL TELEPHONE LABOR INC
Inventor： FLANDERS PAUL B
CPC classification number: G01L23/125 , G01L9/12 , G01L23/32
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10.发明授权公开(公告)号：US11519772B2
公开(公告)日：2022-12-06
申请号：US16436488
申请日：2019-06-10
Applicant: Evigia Systems, Inc.
Inventor： Mark Krammer , Siva Aduri , Navid Yazdi
Abstract: Pressure sensor systems for measuring a liquid pressure and deriving a liquid level from the measured pressure using gas pressure sensing devices. In one embodiment, liquid pressure results in compression or decompression of a trapped gas (as an example, air), wherein the gas pressure is detected by a gas pressure sensing device directly or a gas pressure sensing device that is protected inside a flexible pouch filled with a liquid. In another embodiment, a gas pressure sensing device is packaged in a flexible pouch filled with an inert liquid to protect the sensing device and circuit thereof from external contaminants while accurately transferring pressure from the liquid through a protective barrier. Application of such sensors in a wireless flood or a wireless liquid level measurement system is described as well.
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