Patents by Inventor Robert Pendergrass
Robert Pendergrass 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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Patent number: 10570937Abstract: A clamp assembly comprises a base housing, an anchor member, at least one bracing member, an engaging member, and a clamp bolt. The anchor member supports the at least one brace member. The clamp bolt engages a threaded bore in the anchor member. When the at least one brace member is in an extended position, at least one set of brace teeth engages at least one set of base teeth to brace the at least one brace member against the base housing. When the at least one brace member is braced against the base housing, axial rotation of the clamp bolt applies a clamp force on the engaging member to clamp the cable between the engaging member and the base housing.Type: GrantFiled: January 10, 2017Date of Patent: February 25, 2020Assignee: SENSORLINK CORPORATIONInventors: Kelly R. Hefelfinger, Robert Pendergrass, Nathanial Roth
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Publication number: 20180195539Abstract: A clamp assembly comprises a base housing, an anchor member, at least one bracing member, an engaging member, and a clamp bolt. The anchor member supports the at least one brace member. The clamp bolt engages a threaded bore in the anchor member. When the at least one brace member is in an extended position, at least one set of brace teeth engages at least one set of base teeth to brace the at least one brace member against the base housing. When the at least one base member is braced against the base housing, axial rotation of the clamp bolt applies a clamp force on the engaging member to clamp the cable between the engaging member and the base housing.Type: ApplicationFiled: January 10, 2017Publication date: July 12, 2018Inventors: Kelly R. Hefelfinger, Robert Pendergrass, Nathanial Roth
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Patent number: 9500684Abstract: A tap assembly for a measurement device has a clamp base, a main assembly, a piercing member, a clamp member defining an anchor surface, and a bolt member defining a shaft portion and a head portion. The clamp base has a brace portion defining a bolt opening. The piercing member is supported by a contact plate of the main assembly. The clamp base is attached to the main assembly to define a clamp notch. The contact plate is adjacent to the clamp notch. The shaft portion of the bolt member extends through the bolt opening and engages the anchor surface. At least a portion of the conductor is arranged within the clamp notch between the clamp member and the piercing member such that axial rotation of the bolt member displaces the clamp member towards the piercing member to cause the piercing member to engage the conductor.Type: GrantFiled: August 19, 2014Date of Patent: November 22, 2016Assignee: SENSORLINK CORPORATIONInventors: Robert Pendergrass, Nathanial Roth, Scott Bretvick, Zhijiang Guo
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Patent number: 9089814Abstract: Systems and methods of automatically operating dehumidifiers in response to dehumidifier operating conditions are disclosed herein. A method of operating a dehumidifier configured in accordance with one embodiment includes directing air flow through the dehumidifier at a first volumetric flow rate while the dehumidifier is operating at a first operating condition. The method further includes changing the first volumetric flow rate to a second volumetric flow rate when the first operating condition of the dehumidifier changes to a predetermined second operating condition.Type: GrantFiled: October 3, 2013Date of Patent: July 28, 2015Assignee: Dri-Eaz Products, Inc.Inventors: Robert Pendergrass, Matthew Miller, Tom Schnelle, Larry White
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Publication number: 20140102296Abstract: Systems and methods of automatically operating dehumidifiers in response to dehumidifier operating conditions are disclosed herein. A method of operating a dehumidifier configured in accordance with one embodiment includes directing air flow through the dehumidifier at a first volumetric flow rate while the dehumidifier is operating at a first operating condition. The method further includes changing the first volumetric flow rate to a second volumetric flow rate when the first operating condition of the dehumidifier changes to a predetermined second operating condition.Type: ApplicationFiled: October 3, 2013Publication date: April 17, 2014Applicant: DRI-EAZ PRODUCTS, INC.Inventors: Robert Pendergrass, Matthew Miller, Tom Schnelle, Larry White
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Patent number: 8572994Abstract: Systems and methods of automatically operating dehumidifiers in response to dehumidifier operating conditions are disclosed herein. A method of operating a dehumidifier configured in accordance with one embodiment includes directing air flow through the dehumidifier at a first volumetric flow rate while the dehumidifier is operating at a first operating condition. The method further includes changing the first volumetric flow rate to a second volumetric flow rate when the first operating condition of the dehumidifier changes to a predetermined second operating condition.Type: GrantFiled: April 26, 2010Date of Patent: November 5, 2013Assignee: Dri-Eaz Products, Inc.Inventors: Robert Pendergrass, Matthew Miller, Tom Schnelle, Larry White
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Patent number: 8290742Abstract: Methods, systems, and apparatuses directed to determining the performance of a dehumidifier are disclosed herein. A method of determining dehumidifier performance configured in accordance with one embodiment includes determining an inlet humidity value for airflow entering the dehumidifier, and determining an outlet humidity value for airflow exiting the dehumidifier. The outlet humidity value is determined based at least in part on an efficiency or correction factor for the dehumidifier. The method further includes comparing the inlet humidity value with the outlet humidity value to determine the amount of moisture that the dehumidifier is removing for the air.Type: GrantFiled: November 17, 2008Date of Patent: October 16, 2012Assignee: Dri-Eaz Products, Inc.Inventors: Brandon L. Burton, Robert Pendergrass
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Publication number: 20110183224Abstract: A proton exchange membrane fuel cell has a unit cell assembly including an anode side and a cathode side. The anode side has a cooling base plate, a conductor assembly, a hydrogen flow field, a water absorbing element, and a hydrogen duct assembly. The cathode side has an air flow field, a conductor assembly, an air flow distributor, and an insulating compression plate with wing extensions. A membrane electrode assembly is disposed between the anode side and the cathode side physically connecting the flow fields on both the anode and cathode sides. A sealed anode assembly creates a sealed hydrogen volume and includes the anode conductor assembly, the hydrogen duct assembly, and the membrane electrode assembly all disposed between the insulating compression plate and the cooling base plate. The fuel cell may comprise multiple unit cell assemblies arranged in planar, folded, stacked, or pancake configurations.Type: ApplicationFiled: November 22, 2010Publication date: July 28, 2011Inventors: L. Carlton Salter, Kris Salter, Robert Pendergrass, Jason Redmond
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Patent number: 7913542Abstract: A gas sensor assembly detects a constituent in a gaseous stream. The assembly comprises: (a) a mounting surface, (b) a sensor mounted on the mounting surface and sensor capable of generating a detectable signal in the presence of the constituent, and (c) an enclosing structure. The enclosing structure comprises: (i) a walled component having a pair of vertically spaced ends and mounted at one end on the mounting surface so as to circumscribe the sensor, and (ii) a gas-permeable membrane attached at the other end of the walled component, thereby defining an interior volume within said enclosing structure. Flowing the gaseous stream across the membrane infuses a portion of the gaseous stream into said interior volume containing the sensor.Type: GrantFiled: July 31, 2007Date of Patent: March 29, 2011Assignee: H2Scan CorporationInventor: Robert Pendergrass
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Patent number: 7838168Abstract: A proton exchange membrane fuel cell has a unit cell assembly including an anode side and a cathode side. The anode side has a cooling base plate, a conductor assembly, a hydrogen flow field, a water absorbing element, and a hydrogen duct assembly. The cathode side has an air flow field, a conductor assembly, an air flow distributor, and an insulating compression plate with wing extensions. A membrane electrode assembly is disposed between the anode side and the cathode side physically connecting the flow fields on both the anode and cathode sides. A sealed anode assembly creates a sealed hydrogen volume and includes the anode conductor assembly, the hydrogen duct assembly, and the membrane electrode assembly all disposed between the insulating compression plate and the cooling base plate. The fuel cell may comprise multiple unit cell assemblies arranged in planar, folded, stacked, or pancake configurations.Type: GrantFiled: February 28, 2007Date of Patent: November 23, 2010Inventors: L. Carlton Salter, Robert Pendergrass, Jason Redmond
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Publication number: 20100269526Abstract: Systems and methods of automatically operating dehumidifiers in response to dehumidifier operating conditions are disclosed herein. A method of operating a dehumidifier configured in accordance with one embodiment includes directing air flow through the dehumidifier at a first volumetric flow rate while the dehumidifier is operating at a first operating condition. The method further includes changing the first volumetric flow rate to a second volumetric flow rate when the first operating condition of the dehumidifier changes to a predetermined second operating condition.Type: ApplicationFiled: April 26, 2010Publication date: October 28, 2010Inventors: Robert Pendergrass, Matthew Miller, Tom Schnelle, Larry White
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Publication number: 20100125367Abstract: Methods, systems, and apparatuses directed to determining the performance of a dehumidifier are disclosed herein. A method of determining dehumidifier performance configured in accordance with one embodiment includes determining an inlet humidity value for airflow entering the dehumidifier, and determining an outlet humidity value for airflow exiting the dehumidifier. The outlet humidity value is determined based at least in part on an efficiency or correction factor for the dehumidifier. The method further includes comparing the inlet humidity value with the outlet humidity value to determine the amount of moisture that the dehumidifier is removing for the air.Type: ApplicationFiled: November 17, 2008Publication date: May 20, 2010Applicant: Dri-Eaz Products, Inc.Inventors: Brandon L. Burton, Robert Pendergrass
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Patent number: 7565827Abstract: A gas sensor for sensing a gas stream constituent includes, mounted a substrate, a first gas-sensing element capable of sensing the constituent in a first concentration range, a reference element insensitive to the constituent and having electrical properties congruent with the first gas-sensing element, a heating element substantially circumscribing the first gas-sensing element and the reference element, a temperature-sensing element circumscribing the first gas-sensing element and the reference element, and a second gas-sensing element capable of sensing the constituent in a second concentration range. The first gas-sensing element and the reference element are preferably metal-gated metal-oxide semiconductor (MOS) solid-state devices. The gas sensor is particularly configured to sense hydrogen concentration in a gas stream.Type: GrantFiled: June 12, 2007Date of Patent: July 28, 2009Assignee: H2scan CorporationInventors: Carlton Salter, Robert Pendergrass
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Patent number: 7389672Abstract: A gas sensor assembly detects the presence of a constituent in a first gas stream. The assembly comprises: (a) a flexible circuit having a pair of oppositely-facing surfaces, (b) a sensor mounted on one surface of the flex circuit, the sensor electrically connected to conductors in the flex circuit, and (c) a channel for directing a second gas stream across the flex circuit surface facing away from the sensor, the channel formed at least in part by the flex circuit surface facing away from the sensor. The first and second gas streams can be derived from a common gas stream. In operation, thermal conductivity between the sensor and neighboring heat-conducting structures components is reduced, thereby reducing sensor electric power consumption.Type: GrantFiled: January 27, 2005Date of Patent: June 24, 2008Assignee: H2scan CorporationInventors: Timothy Howard, Robert Pendergrass, Carlton Salter
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Publication number: 20080145279Abstract: A gas sensor assembly detects a constituent in a gaseous stream. The assembly comprises: (a) a mounting surface, (b) a sensor mounted on the mounting surface and sensor capable of generating a detectable signal in the presence of the constituent, and (c) an enclosing structure. The enclosing structure comprises: (i) a walled component having a pair of vertically spaced ends and mounted at one end on the mounting surface so as to circumscribe the sensor, and (ii) a gas-permeable membrane attached at the other end of the walled component, thereby defining an interior volume within said enclosing structure. Flowing the gaseous stream across the membrane infuses a portion of the gaseous stream into said interior volume containing the sensor.Type: ApplicationFiled: July 31, 2007Publication date: June 19, 2008Inventor: Robert Pendergrass
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Publication number: 20080050632Abstract: A proton exchange membrane fuel cell has a unit cell assembly including an anode side and a cathode side. The anode side has a cooling base plate, a conductor assembly, a hydrogen flow field, a water absorbing element, and a hydrogen duct assembly. The cathode side has an air flow field, a conductor assembly, an air flow distributor, and an insulating compression plate with wing extensions. A membrane electrode assembly is disposed between the anode side and the cathode side physically connecting the flow fields on both the anode and cathode sides. A sealed anode assembly creates a sealed hydrogen volume and includes the anode conductor assembly, the hydrogen duct assembly, and the membrane electrode assembly all disposed between the insulating compression plate and the cooling base plate. The fuel cell may comprise multiple unit cell assemblies arranged in planar, folded, stacked, or pancake configurations.Type: ApplicationFiled: February 28, 2007Publication date: February 28, 2008Inventors: L. Carlton Salter, Robert Pendergrass, Jason Redmond
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Publication number: 20070240489Abstract: A gas sensor for sensing a gas stream constituent includes, mounted a substrate, a first gas-sensing element capable of sensing the constituent in a first concentration range, a reference element insensitive to the constituent and having electrical properties congruent with the first gas-sensing element, a heating element substantially circumscribing the first gas-sensing element and the reference element, a temperature-sensing element circumscribing the first gas-sensing element and the reference element, and a second gas-sensing element capable of sensing the constituent in a second concentration range. The first gas-sensing element and the reference element are preferably metal-gated metal-oxide semiconductor (MOS) solid-state devices. The gas sensor is particularly configured to sense hydrogen concentration in a gas stream.Type: ApplicationFiled: June 12, 2007Publication date: October 18, 2007Inventors: Carlton Salter, Robert Pendergrass
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Patent number: 7249490Abstract: A gas sensor assembly detects a constituent in a gaseous stream. The assembly comprises: (a) a mounting surface, (b) a sensor mounted on the mounting surface and sensor capable of generating a detectable signal in the presence of the constituent, and (c) an enclosing structure. The enclosing structure comprises: (i) a walled component having a pair of vertically spaced ends and mounted at one end on the mounting surface so as to circumscribe the sensor, and (ii) a gas-permeable membrane attached at the other end of the walled component, thereby defining an interior volume within said enclosing structure. Flowing the gaseous stream across the membrane infuses a portion of the gaseous stream into said interior volume containing the sensor.Type: GrantFiled: January 27, 2005Date of Patent: July 31, 2007Assignee: H2scan, LLCInventor: Robert Pendergrass
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Patent number: 7228725Abstract: A gas sensor for sensing a gas stream constituent includes, mounted a substrate, a first gas-sensing element capable of sensing the constituent in a first concentration range, a reference element insensitive to the constituent and having electrical properties congruent with the first gas-sensing element, a heating element substantially circumscribing the first gas-sensing element and the reference element, a temperature-sensing element circumscribing the first gas-sensing element and the reference element, and a second gas-sensing element capable of sensing the constituent in a second concentration range. The first gas-sensing element and the reference element are preferably metal-gated metal-oxide semiconductor (MOS) solid-state devices. The gas sensor is particularly configured to sense hydrogen concentration in a gas stream.Type: GrantFiled: January 27, 2005Date of Patent: June 12, 2007Assignee: H2scan LLCInventors: Carlton Salter, Robert Pendergrass
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Patent number: D634414Type: GrantFiled: April 27, 2010Date of Patent: March 15, 2011Assignee: Dri-Eaz Products, Inc.Inventors: Kevin A. Wolfe, Robert Pendergrass