Patents Assigned to TLV Company, Limited
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Patent number: 6880128Abstract: An equipment inspecting and evaluating system can be used to inspect and evaluate steam traps by detecting a level of vibrations of each trap and the surface temperature of the housing of that trap. The detected vibration level and temperature are used to determine whether or not steam is leaking through that trap and to what extent steam leakage is. An equipment management system is connected to the inspection and evaluation system by a data transmission cable and receives inspection data of the traps from the inspection and evaluation system. The management system analyzes the received inspection data for computing the number of defective traps, the ratio of defective traps to the entire traps, the loss caused by steam leakage, etc.Type: GrantFiled: January 24, 2001Date of Patent: April 12, 2005Assignee: TLV Company, LimitedInventor: John H. Nguyen
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Patent number: 6850848Abstract: An equipment inspecting and evaluating system can be used to inspect and evaluate steam traps by detecting a level of vibrations of each trap and the surface temperature of the housing of that trap. The detected vibration level and temperature are used to determine whether or not steam is leaking through that trap and to what extent steam leakage is. An equipment management system is connected to the inspection and evaluation system by a data transmission cable and receives inspection data of the traps from the inspection and evaluation system. The management system analyzes the received inspection data for computing the number of defective traps, the ratio of defective traps to the entire traps, the loss caused by steam leakage, etc.Type: GrantFiled: January 24, 2001Date of Patent: February 1, 2005Assignee: TLV Company, LimitedInventors: John H. Nguyen, Hiroshi Emoto
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Patent number: 6772093Abstract: An equipment inspecting and evaluating system can be used to inspect and evaluate steam traps by detecting a level of vibrations of each trap and the surface temperature of the housing of that trap. The detected vibration level and temperature are used to determine whether or not steam is leaking through that trap and to what extent steam leakage is. An equipment management system is connected to the inspection and evaluation system by a data transmission cable and receives inspection data of the traps from the inspection and evaluation system. The management system analyzes the received inspection data for computing the number of defective traps, the ratio of defective traps to the entire traps, the loss caused by steam leakage, etc.Type: GrantFiled: January 24, 2001Date of Patent: August 3, 2004Assignee: TLV Company, LimitedInventors: John H. Nguyen, Hiroshi Emoto
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Patent number: 6728659Abstract: An equipment inspecting and evaluating system can be used to inspect and evaluate steam traps by detecting a level of vibrations of each trap and the surface temperature of the housing of that trap. The detected vibration level and temperature are used to determine whether or not steam is leaking through that trap and to what extent steam leakage is. An equipment management system is connected to the inspection and evaluation system by a data transmission cable and receives inspection data of the traps from the inspection and evaluation system. The management system analyzes the received inspection data for computing the number of defective traps, the ratio of defective traps to the entire traps, the loss caused by steam leakage, etc.Type: GrantFiled: July 14, 1998Date of Patent: April 27, 2004Assignee: TLV Company, LimitedInventors: John H. Nguyen, Hiroshi Emoto
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Patent number: 6725179Abstract: A monitoring system with a power supply built therein, which is capable of setting installation expenses at low cost and obtaining a stable result of monitoring for a predetermined period. The monitoring system comprises a sensor unit having sensors and a power supply incorporated therein, and a portable data logger having a communication module and a power supply built therein. Physical quantities such as vibrations, temperatures, and pressure, of an object to be monitored are detected by the sensors, followed by transmission to the portable data logger, whereby the state of operation of the object is displayed.Type: GrantFiled: October 14, 1999Date of Patent: April 20, 2004Assignee: TLV Company LimitedInventor: Mamoru Nagase
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Patent number: 6710776Abstract: A picture of a plan view of an area is displayed on a screen of a base unit of a measuring apparatus. The picture contains symbols for respective traps disposed in the displayed area. A bar code is assigned to each trap for identifying it. When the bar code on one trap is read out, a marking “X” is added to the symbol for that trap, so that an operator can readily know the location in the area of that trap on the display screen and, therefore, the current position of the operator in the area.Type: GrantFiled: December 28, 2000Date of Patent: March 23, 2004Assignee: TLV Company LimitedInventor: Yoshihiko Usaki
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Patent number: 6701287Abstract: A monitoring system with a power supply built therein, which is capable of setting installation expenses at low cost and obtaining a stable result of monitoring for a predetermined period. The monitoring system comprises a sensor unit having sensors and a power supply incorporated therein, and a portable data logger having a communication module and a power supply built therein. Physical quantities such as vibrations, temperatures, and pressure, of an object to be monitored are detected by the sensors, followed by transmission to the portable data logger, whereby the state of operation of the object is displayed.Type: GrantFiled: April 30, 2002Date of Patent: March 2, 2004Assignee: TLV Company LimitedInventor: Mamoru Nagase
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Patent number: 6647344Abstract: An equipment inspecting and evaluating system can be used to inspect and evaluate steam traps by detecting a level of vibrations of each trap and the surface temperature of the housing of that trap. The detected vibration level and temperature are used to determine whether or not steam is leaking through that trap and to what extent steam leakage is. An equipment management system is connected to the inspection and evaluation system by a data transmission cable and receives inspection data of the traps from the inspection and evaluation system. The management system analyzes the received inspection data for computing the number of defective traps, the ratio of defective traps to the entire traps, the loss caused by steam leakage, etc.Type: GrantFiled: January 24, 2001Date of Patent: November 11, 2003Assignee: TLV Company, LimitedInventor: John H. Nguyen
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Patent number: 6621268Abstract: An article identification device 4 is mounted on a trap of which operation is diagnosed. The identification device 4 includes a memory 47 in which trap identification data is stored. When the identification device 4 receives an electromagnetic wave from a trap operation diagnosing device, a rectifier 46 derives DC power from the electromagnetic wave, which DC power drives the memory 47 and a modulator 48 so that an electromagnetic wave containing the trap identification data can be sent to the operation diagnosing device. The operation diagnosing device derives the trap identification data from the received electromagnetic wave to identify the trap whose operation the operation diagnosing device diagnoses.Type: GrantFiled: December 11, 2000Date of Patent: September 16, 2003Assignee: TLV Company, LimitedInventor: Yoshihiko Usaki
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Publication number: 20010006384Abstract: A picture of a plan view of an area is displayed on a screen of a base unit of a measuring apparatus. The picture contains symbols for respective traps disposed in the displayed area. A bar code is assigned to each trap for identifying it. When the bar code on one trap is read out, a marking “X” is added to the symbol for that trap, so that an operator can readily know the location in the area of that trap on the display screen and, therefore, the current position of the operator in the area.Type: ApplicationFiled: December 28, 2000Publication date: July 5, 2001Applicant: TLV Company, Limited.Inventor: Yoshihiko Usaki
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Publication number: 20010005138Abstract: An article identification device 4 is mounted on a trap of which operation is diagnosed. The identification device 4 includes a memory 47 in which trap identification data is stored. When the identification device 4 receives an electromagnetic wave from a trap operation diagnosing device, a rectifier 46 derives DC power from the electromagnetic wave, which DC power drives the memory 47 and a modulator 48 so that an electromagnetic wave containing the trap identification data can be sent to the operation diagnosing device. The operation diagnosing device derives the trap identification data from the received electromagnetic wave to identify the trap whose operation the operation diagnosing device diagnoses.Type: ApplicationFiled: December 11, 2000Publication date: June 28, 2001Applicant: TLV Company, LimitedInventor: Yoshihiko Usaki
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Patent number: 5209284Abstract: A heat treating device used in chemical and food industries, including a heat exchanger of jacket type, for example, which surrounds a reaction vessel, wherein heat media such as steam and water are fed to the heat exchanger and also sucked by sucking means such as an ejector to put the interior of the heat exchanger in a reduced pressure state, thereby effecting heat treatment at relatively low temperature below 100.degree. C., for example, the improvement of which is to prevent variation of the reduced pressure level in the heat exchanger for keeping stability of treating temperature.Type: GrantFiled: March 9, 1992Date of Patent: May 11, 1993Assignee: TLV Company, LimitedInventors: Masakatsu Okamoto, Masao Yonemura, Hideaki Yumoto
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Patent number: 5007582Abstract: A device for heating with reduced pressure steam directly or indirectly a material or product to be heat-treated, which includes a heat exchanger chamber which is supplied with steam through a pressure reducing valve and evacuated by an ejector device which can control the heating temperature of the heat exchanger chamber by controlling the operation fluid of the ejector device. The device can be used safely and advantageously in chemical and food industries.Type: GrantFiled: November 22, 1989Date of Patent: April 16, 1991Assignee: TLV Company, LimitedInventors: Takayuki Morii, Hideaki Yumoto