Patents by Inventor Gopakumar Parameswaran
Gopakumar Parameswaran has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20220251465Abstract: The present application relates to biodegradable zero drip lubricating oil composition. The lubricating oil composition comprises a) an oil soluble polyalkylene glycol polymer; b) a vegetable base stock; and c) organic solvent excluding alcohol, wherein the oil soluble poly alkylene glycol and the vegetable base stock are present in a weight ratio from 1:2.6 to 1:8. The biodegradable lubricating oil compositions have high film strength, high load carrying capability, zero anti-drip property and maximum penetrability in the chain linkages, for application in roller chains and driving power trains having complex chain linkages.Type: ApplicationFiled: April 23, 2020Publication date: August 11, 2022Inventors: Gopakumar Parameswaran, Vipulkumar H. Prajapati
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Patent number: 9334947Abstract: The present invention relates to a device (100) for sequential cleaning and lubricating a drive chain (200) of a motorcycle, which comprises a housing (10) having top and bottom casings (12, 14) connected together in such a way that the housing is partitioned into a plurality of compartments (30, 40, 50) into which the chain is enclosed. Nozzles (70) are arranged within each compartment of the housing and placed radially inwards onto the chain to supply medium onto the chain. Brushes (60) are attached in the interior of at least one of the compartments of the housing in such a way that bristles (60a) of the brushes are positioned towards and in contact with the chain. At least one drain trap region (14a) is formed inside the bottom casing of each compartment of the housing to collect and drain the residue of medium. Such device achieves reliable and efficient cleaning and lubrication of the drive chain by rapid transferring of cleaning and lubricating material from multiple directions.Type: GrantFiled: August 28, 2012Date of Patent: May 10, 2016Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Aby Varghese, Gopakumar Parameswaran
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Publication number: 20140213399Abstract: The present invention relates to a device (100) for sequential cleaning and lubricating a drive chain (200) of a motorcycle, which comprises a housing (10) having top and bottom casings (12, 14) connected together in such a way that the housing is partitioned into a plurality of compartments (30, 40, 50) into which the chain is enclosed. Nozzles (70) are arranged within each compartment of the housing and placed radially inwards onto the chain to supply medium onto the chain. Brushes (60) are attached in the interior of at least one of the compartments of the housing in such a way that bristles (60a) of the brushes are positioned towards and in contact with the chain. At least one drain trap region (14a) is formed inside the bottom casing of each compartment of the housing to collect and drain the residue of medium. Such device achieves reliable and efficient cleaning and lubrication of the drive chain by rapid transferring of cleaning and lubricating material from multiple directions.Type: ApplicationFiled: August 28, 2012Publication date: July 31, 2014Applicant: 3M Innovative Properties CompanyInventors: Aby Varghese, Gopakumar Parameswaran
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Publication number: 20120173031Abstract: A system for determining operating points of a photovoltaic array may power a load with the photovoltaic array and an alternate power source concurrently. One or more operating points of the photovoltaic array may be detected by adjusting the amount of power that the alternate power source supplies to the load while continuing to power the load with the alternate power source and the photovoltaic array. The operating points may be stored in a calibration table. Alternatively or in addition, the operating points may be detected by altering the amount of power that a battery charger receives from a photovoltaic array while the photovoltaic array powers the battery charger and the load concurrently.Type: ApplicationFiled: December 29, 2010Publication date: July 5, 2012Applicant: REDWOOD SYSTEMS, INC.Inventors: Gopakumar Parameswaran, Mark Covaro
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Patent number: 8058750Abstract: In one embodiment, a system may be provided that includes a circuit that is electrically coupled to a line. The circuit generates a direct current signal on the line, where the direct current signal has a period that includes a charge cycle and a discharge cycle. The circuit charges the line in the charge cycle and ceases to charge the line in the discharge cycle in order to generate the direct current signal. The line fails to fully discharge for at least a portion of the discharge cycle. To receive data from the line, the circuit detects a variation in a discharging of the line in the discharge cycle.Type: GrantFiled: May 14, 2009Date of Patent: November 15, 2011Assignee: Redwood Systems, Inc.Inventors: Mark Covaro, Gopakumar Parameswaran
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Publication number: 20100289343Abstract: In one embodiment, a system may be provided that includes a circuit that is electrically coupled to a line. The circuit generates a direct current signal on the line, where the direct current signal has a period that includes a charge cycle and a discharge cycle. The circuit charges the line in the charge cycle and ceases to charge the line in the discharge cycle in order to generate the direct current signal. The line fails to fully discharge for at least a portion of the discharge cycle. To receive data from the line, the circuit detects a variation in a discharging of the line in the discharge cycle.Type: ApplicationFiled: May 14, 2009Publication date: November 18, 2010Applicant: REDWOOD SYSTEMS, INC.Inventors: Mark Covaro, Gopakumar Parameswaran
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Patent number: 7217889Abstract: Two pairs of vias are arranged in a printed circuit board. A first pair of vias, which conveys a first signal pair, is arranged in a plane that is substantially equidistant from the vias in a second pair of vias, which conveys a second signal pair. Similarly, the second pair of vias is located in a plane that is substantially equidistant from each via in the first pair of vias. In some embodiments, such an arrangement reduces the crosstalk effect of the first signal pair on the second signal pair and vice versa.Type: GrantFiled: December 4, 2003Date of Patent: May 15, 2007Assignee: Cisco Technology, Inc.Inventors: Gopakumar Parameswaran, Cuong C. Ly, Douglas L. Yanagawa, Mark N. Yamashita, Yuval Bachar
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Patent number: 7164648Abstract: An ultra-fast crosstalk cancellation technique characterizes crosstalk with a sample set representing NEXT generated by a single transmitted bit. During operation, transmit bit values of transmitted bits are saved in a transmit bit shift register and used to weight crosstalk samples corresponding to a stored transmit value. The weighted transmit samples are summed to generate a crosstalk cancellation signal which is subtracted from a received signal to remove NEXT.Type: GrantFiled: July 26, 2002Date of Patent: January 16, 2007Assignee: Cisco Technology, Inc.Inventors: Yuval Bachar, Gopakumar Parameswaran
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Patent number: 7068650Abstract: A system and method for interleaving symbols to facilitate compatibility between serializer/deserializer (SerDes) units operating at different data rates multiplexes duplicates of a parallel data stream into a fast data rate serial data stream to form a serial data steam at a psuedo-slow data rate which can be received by a SerDes unit operating at the slow data rate. The psuedo-slow data rate serial data stream can also be received by a SerDes operating at the fast data rate by sampling each bit multiple times and demultiplexing the samples into duplicates of the parallel data stream.Type: GrantFiled: September 6, 2001Date of Patent: June 27, 2006Assignee: Cisco Technology, Inc.Inventors: Yuval Bachar, Gopakumar Parameswaran
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Patent number: 6576833Abstract: A repeater, useable for connecting switches in a data communication network, is provided in a distributed and/or modular fashion. The repeater includes a plurality of separate and distinct components or modules connected to or at least partially housed in, the various switches which the repeater modules couple. Preferably, the repeater autodetects and/or autoconfigures some or all aspects of repeater operations, such as detecting and/or configuring in response to appropriate or approved cable-type connections. A conductive, sealing member on a cable connector substantially reduces or eliminates EMI.Type: GrantFiled: April 12, 2001Date of Patent: June 10, 2003Assignee: Cisco Technology, Inc.Inventors: Mark Covaro, Gordon MacKay, Gopakumar Parameswaran, Robert Gregory Twiss, Robert D. Hastings
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Patent number: 6462435Abstract: A repeater, useable for connecting switches in a data communication network, is provided in a distributed and/or modular fashion. The repeater includes a plurality of separate and distinct components or modules connected to or at least partially housed in, the various switches which the repeater modules couple. Preferably, the repeater autodetects and/or autoconfigures some or all aspects of repeater operations, such as detecting and/or configuring in response to appropriate or approved cable-type connections. A conductive, sealing member on a cable connector substantially reduces or eliminates EMI.Type: GrantFiled: June 11, 1999Date of Patent: October 8, 2002Assignee: Cisco Technology, Inc.Inventors: Mark Covaro, Gordon MacKay, Gopakumar Parameswaran, Robert Gregory Twiss, Robert D. Hastings
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Patent number: 6431765Abstract: A repeater, useable for connecting switches in a data communication network, is provided in a distributed and/or modular fashion. The repeater includes a plurality of separate and distinct components or modules connected to or at least partially housed in, the various switches which the repeater modules couple. The distributed and/or modular repeater facilitates accommodating various switching or repeater needs as a network grows or contracts. A light pipe, preferably integral with a module case, conveys indicator lights to a position visible when viewing a switch front panel. A heat spreader unit receives and/or conveys heat and/or protects against undue EMI. A collision-handling state machine transmits modified collision fragments so as to avoid reduction in interpacket gaps, e.g. by downstream repeater modules.Type: GrantFiled: June 11, 1999Date of Patent: August 13, 2002Assignee: Cisco Technology Inc.Inventors: John K. Chen, Gregory Lee DeJager, Robert D. Hastings, Gordon MacKay, Gopakumar Parameswaran, Santanu Sinha, Robert Gregory Twiss, Van Van Nguyen
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Publication number: 20020024261Abstract: A repeater, useable for connecting switches in a data communication network, is provided in a distributed and/or modular fashion. The repeater includes a plurality of separate and distinct components or modules connected to or at least partially housed in, the various switches which the repeater modules couple. Preferably, the repeater autodetects and/or autoconfigures some or all aspects of repeater operations, such as detecting and/or configuring in response to appropriate or approved cable-type connections. A conductive, sealing member on a cable connector substantially reduces or eliminates EMI.Type: ApplicationFiled: April 12, 2001Publication date: February 28, 2002Inventors: Mark Covaro, Gordon MacKay, Gopakumar Parameswaran, Robert Gregory Twiss, Robert D. Hastings