公开(公告)号：WO1998001739A2

公开(公告)日：1998-01-15

申请号：PCT/US1997011339

申请日：1997-06-27

Applicant: CONTROL DEVICES, INC. ,  LEC, Ryszard ,  PRAGER, Lee

Inventor： CONTROL DEVICES, INC.

IPC: G01N00/00

CPC classification number: G01N33/2888 ,  G01N29/036 ,  G01N2291/02818

Abstract: An acoustic sensor (52) is disclosed to detect quality of oil or a lubricating liquid resident in a machine (30). The acoustic sensor (52) may include a piezoelectric element (56) configured as a resonator to indicate a change in the property of an oil or lubricating liquid as a function of resonant frequency. Such a sensor (52) may be positioned in an engine (32) having a lubrication system (40) and coupled to a signal processor (62) to provide an indication of when the lubricant has degraded to an extent requiring replacement. Processor (62) may be part of a monitoring system (60) including an output device (66) to provide the indication. In further aspect, sensor (52) is employed to detect viscosity of oil or another liquid residing in a machine in situ.

Abstract translation: 公开了一种用于检测存在于机器（30）中的油或润滑液体的质量的声学传感器（52）。 声学传感器（52）可以包括构造为谐振器的压电元件（56），以指示作为谐振频率的函数的油或润滑液体的性质的变化。 这种传感器（52）可以定位在具有润滑系统（40）的发动机（32）中并且耦合到信号处理器（62），以提供何时润滑剂已经劣化到需要更换的程度的指示。 处理器（62）可以是包括提供指示的输出设备（66）的监视系统（60）的一部分。 在另一方面，传感器（52）用于检测原位存在于机器中的油或其它液体的粘度。

公开(公告)号：WO9801739A3

公开(公告)日：1998-02-12

申请号：PCT/US9711339

申请日：1997-06-27

Applicant: CONTROL DEVICES INC ,  LEC RYSZARD ,  PRAGER LEE

Inventor： LEC RYSZARD ,  PRAGER LEE

IPC: G01N29/036 ,  G01N33/28 ,  G01N11/16

CPC classification number: G01N33/2888 ,  G01N29/036 ,  G01N2291/02818

Abstract: An acoustic sensor (52) is disclosed to detect quality of oil or a lubricating liquid resident in a machine (30). The acoustic sensor (52) may include a piezoelectric element (56) configured as a resonator to indicate a change in the property of an oil or lubricating liquid as a function of resonant frequency. Such a sensor (52) may be positioned in an engine (32) having a lubrication system (40) and coupled to a signal processor (62) to provide an indication of when the lubricant has degraded to an extent requiring replacement. Processor (62) may be part of a monitoring system (60) including an output device (66) to provide the indication. In further aspect, sensor (52) is employed to detect viscosity of oil or another liquid residing in a machine in situ.

公开(公告)号：WO0143224B1

公开(公告)日：2001-12-20

申请号：PCT/US0042196

申请日：2000-11-16

Applicant: CONTROL DEVICES INC ,  EBLING TIMOTHY M ,  GODAN THOMAS W ,  PRAGER LEE A

Inventor： EBLING TIMOTHY M ,  GODAN THOMAS W ,  PRAGER LEE A

IPC: H01P7/10

CPC classification number: H01P7/10

Abstract: A dielectric resonator system (100) having a dielectric element (102) and a purified alumina attachment assembly (106) both housed within a metallic resonant casing (104). Attachment assembly (106) is at least 99.5% pure alumina. Attachment assembly (106) couples dielectric element (102) to the casing (104). Dielectric element (102) is an internally threaded ring or disk. Attachment assembly (106) includes an externally threaded alumina support member (107) coupled to the internally threaded dielectric element (102).

Abstract translation: 一种具有介电元件（102）和纯化的氧化铝附着组件（106）的介质谐振器系统（100），两者都容纳在金属谐振壳体（104）内。 附接组件（106）为至少99.5％纯氧化铝。 连接组件（106）将电介质元件（102）耦合到壳体（104）。 电介质元件（102）是内螺纹环或盘。 附接组件（106）包括耦合到内螺纹电介质元件（102）的外螺纹氧化铝支撑构件（107）。

公开(公告)号：WO9910948B1

公开(公告)日：1999-05-14

申请号：PCT/US9817059

申请日：1998-08-18

Applicant: CONTROL DEVICES INC ,  EBLING TIMOTHY M ,  GODAN THOMAS W ,  PRAGER LEE A

Inventor： EBLING TIMOTHY M ,  GODAN THOMAS W ,  PRAGER LEE A

IPC: H01P7/10

CPC classification number: H01P7/10

Abstract: A dielectric resonator system (100) having a dielectric element (102) and an attachment assembly (108) both housed within a casing. The attachment assembly (108) is electrically insulating. The attachment assembly (108) couples the dielectric element (102) to the casing. The dielectric element is internally threaded (133). The attachment assembly (108) includes an electrically insulating support structure (110) coupled to the casing by a nut (112) and bolt (114), both of which may also be electrically insulating. The support structure (110) is externally threaded (128) and is nondestructively removably coupled to the threaded dielectric element (102).

Abstract translation: 具有容纳在壳体内的电介质元件（102）和附接组件（108）的介质谐振器系统（100）。 附件组件（108）是电绝缘的。 附接组件（108）将介电元件（102）连接到壳体。 电介质元件是内螺纹（133）。 附接组件（108）包括通过螺母（112）和螺栓（114）联接到壳体的电绝缘支撑结构（110），两者都可以是电绝缘的。 支撑结构（110）是外螺纹（128）并且非破坏性地可拆卸地联接到螺纹介电元件（102）。