Patents by Inventor Douglas A. Holmes
Douglas A. Holmes 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: 11975746Abstract: A vessel for transporting a material that is solid or semi-solid at ambient temperature, includes a body having an interior surface comprising textured metal, and a superoleophobic coating on the interior surface for inhibiting the material from adhering to the interior surface, the superoleophobic coating including a nanotextured coating disposed on the textured metal and functionalized with a fluorinated compound. The superoleophobic coating facilitates flow of the material along the interior surface.Type: GrantFiled: May 6, 2022Date of Patent: May 7, 2024Assignee: FCCL PartnershipInventors: Subodh Gupta, Michael N. Holmes, Jennifer D. Wood, Sarbajit Banerjee, Robert V. Dennis-Pelcher, Lacey Douglas, Thomas E. O'Loughlin
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Patent number: 11739562Abstract: An exemplary clutch mechanism includes a casing, first and second hubs rotatably mounted to the casing, an electrically-actuated drive assembly mounted within the casing, and a clutching lug movably mounted within the casing. The lug has an engaged position in which the lug couples the hubs for joint rotation and a disengaged position in which the hubs are rotationally decoupled. The drive assembly is operable to drive the lug between the engaged and disengaged positions to couple and decouple the hubs. The clutch mechanism is modular and self-contained within the casing such that the mechanism can be installed to each of a plurality of different lockset products without opening the casing.Type: GrantFiled: August 11, 2020Date of Patent: August 29, 2023Assignee: Schlage Lock Company LLCInventors: Douglas A. Holmes, Kenton H. Barker, Aditya S. Heblikar, Nagesh Varadaraju, Vijayakumar Mani, Preethi M. Yogaraj, Adithya G. Shetty, Sushanth Kondi
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Publication number: 20230243439Abstract: The disclosure is directed to an apparatus and system for adjusting rate of spool centering in a pilot-controlled hydraulic spool valve. The apparatus includes a first pilot port and a second pilot port. The apparatus includes a first valve port and a second valve port. The apparatus also includes a first hydraulic circuit connecting the first pilot port and the first valve port, wherein the first hydraulic circuit, based on a hydraulic fluid pressure of the second pilot port, comprises one of a controlled-flow condition and an unrestricted-flow condition. The apparatus further includes a second hydraulic circuit connecting the second pilot port and the second valve port, wherein the second hydraulic circuit, based on a hydraulic fluid pressure of the first pilot port, comprises one of a controlled-flow condition and an unrestricted-flow condition.Type: ApplicationFiled: April 7, 2023Publication date: August 3, 2023Inventors: James Douglas Holmes, Eric Thomas Nelson, Nathan Bradley Wourms
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Patent number: 11624452Abstract: The disclosure is directed to an apparatus and system for adjusting rate of spool centering in a pilot-controlled hydraulic spool valve. The apparatus includes a first pilot port and a second pilot port. The apparatus includes a first valve port and a second valve port. The apparatus also includes a first hydraulic circuit connecting the first pilot port and the first valve port, wherein the first hydraulic circuit, based on a hydraulic fluid pressure of the second pilot port, comprises one of a controlled-flow condition and an unrestricted-flow condition. The apparatus further includes a second hydraulic circuit connecting the second pilot port and the second valve port, wherein the second hydraulic circuit, based on a hydraulic fluid pressure of the first pilot port, comprises one of a controlled-flow condition and an unrestricted-flow condition.Type: GrantFiled: April 1, 2020Date of Patent: April 11, 2023Assignee: BARKO HYDRAULICS, LLCInventors: James Douglas Holmes, Eric Thomas Nelson, Nathan Bradley Wourms
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Publication number: 20220259890Abstract: A lock cylinder including a plug, a plurality of key followers, a sensor assembly structured to sense positions of the key followers, and a controller in communication with the sensor assembly. The plug includes a keyway and a plurality of plug tumbler shafts. Each of the key followers is movably seated in a corresponding one of the plug tumbler shafts and includes a sensor interface. The sensor assembly includes a plurality of sensors, each of which includes at least one sensing region. Each of the key followers is associated with one of the sensors via an associative link formed between the sensor interface and the corresponding sensing region. The sensors are structured to generate an output signal indicative of the transverse position of the associated key follower, and the controller is structured to select and perform actions based upon the output signals.Type: ApplicationFiled: October 26, 2021Publication date: August 18, 2022Inventors: Douglas A. Holmes, Aaron P. McKibben, Sundar R. D. Vasudevan, Anoop Dutt Mysore Nagesh
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Patent number: 11156019Abstract: A lock cylinder including a plug, a plurality of key followers, a sensor assembly structured to sense positions of the key followers, and a controller in communication with the sensor assembly. The plug includes a keyway and a plurality of plug tumbler shafts. Each of the key followers is movably seated in a corresponding one of the plug tumbler shafts and includes a sensor interface. The sensor assembly includes a plurality of sensors, each of which includes at least one sensing region. Each of the key followers is associated with one of the sensors via an associative link formed between the sensor interface and the corresponding sensing region. The sensors are structured to generate an output signal indicative of the transverse position of the associated key follower, and the controller is structured to select and perform actions based upon the output signals.Type: GrantFiled: September 17, 2019Date of Patent: October 26, 2021Assignee: Schlage Lock Company LLCInventors: Douglas A. Holmes, Aaron P. McKibben, Sundar R. D. Vasudevan, Anoop Dutt Mysore Nagesh
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Publication number: 20200370338Abstract: An exemplary clutch mechanism includes a casing, first and second hubs rotatably mounted to the casing, an electrically-actuated drive assembly mounted within the casing, and a clutching lug movably mounted within the casing. The lug has an engaged position in which the lug couples the hubs for joint rotation and a disengaged position in which the hubs are rotationally decoupled. The drive assembly is operable to drive the lug between the engaged and disengaged positions to couple and decouple the hubs. The clutch mechanism is modular and self-contained within the casing such that the mechanism can be installed to each of a plurality of different lockset products without opening the casing.Type: ApplicationFiled: August 11, 2020Publication date: November 26, 2020Inventors: Douglas A. Holmes, Kenton H. Barker, Aditya S. Heblikar, Nagesh Varadaraju, Vijayakumar Mani, Preethi M. Yogaraj, Adithya G. Shetty, Sushanth Kondi
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Publication number: 20200326013Abstract: The disclosure is directed to an apparatus and system for adjusting rate of spool centering in a pilot-controlled hydraulic spool valve. The apparatus includes a first pilot port and a second pilot port. The apparatus includes a first valve port and a second valve port. The apparatus also includes a first hydraulic circuit connecting the first pilot port and the first valve port, wherein the first hydraulic circuit, based on a hydraulic fluid pressure of the second pilot port, comprises one of a controlled-flow condition and an unrestricted-flow condition. The apparatus further includes a second hydraulic circuit connecting the second pilot port and the second valve port, wherein the second hydraulic circuit, based on a hydraulic fluid pressure of the first pilot port, comprises one of a controlled-flow condition and an unrestricted-flow condition.Type: ApplicationFiled: April 1, 2020Publication date: October 15, 2020Applicant: BARKO HYDRAULICS, LLCInventors: James Douglas Holmes, Eric Thomas Nelson, Nathan Bradley Wourms
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Patent number: 10738506Abstract: An exemplary clutch mechanism includes a casing, first and second hubs rotatably mounted to the casing, an electrically-actuated drive assembly mounted within the casing, and a clutching lug movably mounted within the casing. The lug has an engaged position in which the lug couples the hubs for joint rotation and a disengaged position in which the hubs are rotationally decoupled. The drive assembly is operable to drive the lug between the engaged and disengaged positions to couple and decouple the hubs. The clutch mechanism is modular and self-contained within the casing such that the mechanism can be installed to each of a plurality of different lockset products without opening the casing.Type: GrantFiled: July 24, 2018Date of Patent: August 11, 2020Assignee: Schlage Lock Company LLCInventors: Douglas A. Holmes, Kenton H. Barker, Aditya S. Heblikar, Nagesh Varadaraju, Vijayakumar Mani, Preethi M. Yogaraj, Adithya G. Shetty, Sushanth Kondi
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Publication number: 20200224453Abstract: A lock cylinder including a plug, a plurality of key followers, a sensor assembly structured to sense positions of the key followers, and a controller in communication with the sensor assembly. The plug includes a keyway and a plurality of plug tumbler shafts. Each of the key followers is movably seated in a corresponding one of the plug tumbler shafts and includes a sensor interface. The sensor assembly includes a plurality of sensors, each of which includes at least one sensing region. Each of the key followers is associated with one of the sensors via an associative link formed between the sensor interface and the corresponding sensing region. The sensors are structured to generate an output signal indicative of the transverse position of the associated key follower, and the controller is structured to select and perform actions based upon the output signals.Type: ApplicationFiled: September 17, 2019Publication date: July 16, 2020Inventors: Douglas A. Holmes, Aaron P. McKibben, Sundar R. D. Vasudevan, Anoop Dutt Mysore Nagesh
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Patent number: 10612273Abstract: An anti-barricading thumb turn assembly is configured for use with a lockset including a bolt movable to lock and unlock a door. The anti-barricading thumb turn assembly includes a spindle connected to a thumb turn with a biasing member on one side of the lockset. The lockset is also operable by a key from the other side of the door to lock and unlock the door. Under normal operation, the spindle and thumb turn rotate as the bolt is locked and unlocked. In a barricading situation in which the thumb turn is held in an attempt to prevent the spindle from rotating, the biasing member allows the spindle to rotate relative to the thumb turn upon application of sufficient force through rotation of the key to overcome the biasing force and unlock the bolt even if the thumb turn is held stationary.Type: GrantFiled: March 13, 2018Date of Patent: April 7, 2020Assignee: Schlage Lock Company LLCInventors: Adam M. Litwinski, Douglas A. Holmes
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Patent number: 10563431Abstract: A cable lock including a lock body having a locking mechanism with a locked state and an unlocked state. A ceramic body cable includes a plurality of nested ceramic bodies and a cord, wherein each one of the plurality of ceramic bodies includes a center portion having an aperture. Each aperture of the plurality of nested ceramic bodies forms a channel through which the cord is positioned. Each of the ceramic bodies also includes a projection and a space such that the projection of one of the ceramic bodies overlaps the space of an adjacent ceramic body. A mesh sleeve is positioned on an exterior of the ceramic body cable and a shrunken heat shrinkable tube is positioned over the mesh sleeve. The combined ceramic body cable, mesh sleeve, and shrunken heat shrinkable tube are coupled to the lock body.Type: GrantFiled: February 5, 2019Date of Patent: February 18, 2020Assignee: Schlage Lock Company LLCInventors: Douglas A. Holmes, Daniel H. Kindstrand, Jonah S. Eidman, Gideon Hou, Thomas Y. Liu, Ryan T. Stolz
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Publication number: 20200032551Abstract: An exemplary clutch mechanism includes a casing, first and second hubs rotatably mounted to the casing, an electrically-actuated drive assembly mounted within the casing, and a clutching lug movably mounted within the casing. The lug has an engaged position in which the lug couples the hubs for joint rotation and a disengaged position in which the hubs are rotationally decoupled. The drive assembly is operable to drive the lug between the engaged and disengaged positions to couple and decouple the hubs. The clutch mechanism is modular and self-contained within the casing such that the mechanism can be installed to each of a plurality of different lockset products without opening the casing.Type: ApplicationFiled: July 24, 2018Publication date: January 30, 2020Inventors: Douglas A. Holmes, Kenton H. Barker, Aditya S. Heblikar, Nagesh Varadaraju, Vijayakumar Mani, Preethi M. Yogaraj, Adithya G. Shetty, Sushanth Kondi
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Publication number: 20190284840Abstract: An anti-barricading thumb turn assembly is configured for use with a lockset including a bolt movable to lock and unlock a door. The anti-barricading thumb turn assembly includes a spindle connected to a thumb turn with a biasing member on one side of the lockset. The lockset is also operable by a key from the other side of the door to lock and unlock the door. Under normal operation, the spindle and thumb turn rotate as the bolt is locked and unlocked. In a barricading situation in which the thumb turn is held to attempt to attempt to prevent the spindle from rotating, the biasing member allows the spindle to rotate relative to the thumb turn upon application of sufficient force through rotation of the key to overcome the biasing force and unlock the bolt even if the thumb turn is held stationary.Type: ApplicationFiled: March 13, 2018Publication date: September 19, 2019Inventors: Adam M. Litwinski, Douglas A. Holmes
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Patent number: 10415269Abstract: A lock cylinder including a plug, a plurality of key followers, a sensor assembly structured to sense positions of the key followers, and a controller in communication with the sensor assembly. The plug includes a keyway and a plurality of plug tumbler shafts. Each of the key followers is movably seated in a corresponding one of the plug tumbler shafts and includes a sensor interface. The sensor assembly includes a plurality of sensors, each of which includes at least one sensing region. Each of the key followers is associated with one of the sensors via an associative link formed between the sensor interface and the corresponding sensing region. The sensors are structured to generate an output signal indicative of the transverse position of the associated key follower, and the controller is structured to select and perform actions based upon the output signals.Type: GrantFiled: April 14, 2016Date of Patent: September 17, 2019Assignee: Schlage Lock Company LLCInventors: Douglas A. Holmes, Aaron P. McKibben, Sundar R. D. Vasudevan, Anoop N. M. Dutt
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Patent number: 10400475Abstract: A lock device including a keyway sized and configured to receive a key, a sensor assembly including an optical source and a key height sensor, and a controller in communication with the sensor assembly. The optical source is configured to generate an optical signal, and the key height sensor is configured to generate a key height signal in response to receiving the optical signal. The key is configured to interact with the optical signal such that the key height signal varies based upon the height of the key. The controller is configured to generate a key profile based at least in part upon the key height signal, to compare the key profile to authorization data, to select an action based upon the comparing, and to perform the action.Type: GrantFiled: December 1, 2016Date of Patent: September 3, 2019Assignee: Schlage Lock Company LLCInventors: Peter Klammer, William P. Dye, Michael P. Hogan, Samir Moustaffa Tamer, Donald D. Baker, Douglas A. Holmes
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Publication number: 20190194979Abstract: A cable lock including a lock body having a locking mechanism with a locked state and an unlocked state. A ceramic body cable includes a plurality of nested ceramic bodies and a cord, wherein each one of the plurality of ceramic bodies includes a center portion having an aperture. Each aperture of the plurality of nested ceramic bodies forms a channel through which the cord is positioned. Each of the ceramic bodies also includes a projection and a space such that the projection of one of the ceramic bodies overlaps the space of an adjacent ceramic body. A mesh sleeve is positioned on an exterior of the ceramic body cable and a shrunken heat shrinkable tube is positioned over the mesh sleeve. The combined ceramic body cable, mesh sleeve, and shrunken heat shrinkable tube are coupled to the lock body.Type: ApplicationFiled: February 5, 2019Publication date: June 27, 2019Inventors: Douglas A. Holmes, Daniel H. Kindstrand, Jonah S. Eidman, Gideon Hou, Thomas Y. Liu, Ryan T. Stolz
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Patent number: 10196837Abstract: A cable lock including a lock body having a locking mechanism with a locked state and an unlocked state. A ceramic body cable includes a plurality of nested ceramic bodies and a cord, wherein each one of the plurality of ceramic bodies includes a center portion having an aperture. Each aperture of the plurality of nested ceramic bodies forms a channel through which the cord is positioned. Each of the ceramic bodies also includes a projection and a space such that the projection of one of the ceramic bodies overlaps the space of an adjacent ceramic body. A mesh sleeve is positioned on an exterior of the ceramic body cable and a shrunken heat shrinkable tube is positioned over the mesh sleeve. The combined ceramic body cable, mesh sleeve, and shrunken heat shrinkable tube are coupled to the lock body.Type: GrantFiled: September 1, 2017Date of Patent: February 5, 2019Assignee: Schlage Lock Company LLCInventors: Douglas A. Holmes, Daniel H. Kindstrand, Jonah S. Eidman, Gideon Hou, Thomas Y. Liu, Ryan T. Stolz
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Publication number: 20180058106Abstract: A cable lock including a lock body having a locking mechanism with a locked state and an unlocked state. A ceramic body cable includes a plurality of nested ceramic bodies and a cord, wherein each one of the plurality of ceramic bodies includes a center portion having an aperture. Each aperture of the plurality of nested ceramic bodies forms a channel through which the cord is positioned. Each of the ceramic bodies also includes a projection and a space such that the projection of one of the ceramic bodies overlaps the space of an adjacent ceramic body. A mesh sleeve is positioned on an exterior of the ceramic body cable and a shrunken heat shrinkable tube is positioned over the mesh sleeve. The combined ceramic body cable, mesh sleeve, and shrunken heat shrinkable tube are coupled to the lock body.Type: ApplicationFiled: September 1, 2017Publication date: March 1, 2018Inventors: Douglas A. Holmes, Daniel H. Kindstrand, Jonah S. Eidman, Gideon Hou, Thomas Y. Liu, Ryan T. Stolz
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Publication number: 20170298654Abstract: A lock cylinder including a plug, a plurality of key followers, a sensor assembly structured to sense positions of the key followers, and a controller in communication with the sensor assembly. The plug includes a keyway and a plurality of plug tumbler shafts. Each of the key followers is movably seated in a corresponding one of the plug tumbler shafts and includes a sensor interface. The sensor assembly includes a plurality of sensors, each of which includes at least one sensing region. Each of the key followers is associated with one of the sensors via an associative link formed between the sensor interface and the corresponding sensing region. The sensors are structured to generate an output signal indicative of the transverse position of the associated key follower, and the controller is structured to select and perform actions based upon the output signals.Type: ApplicationFiled: April 14, 2016Publication date: October 19, 2017Inventors: Douglas A. Holmes, Aaron P. McKibben, Sundar R. D. Vasudevan, Anoop N. M. Dutt