Patents by Inventor David Crenshaw

David Crenshaw 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).

  • Publication number: 20250083379
    Abstract: A three-dimensional (3D) printing system may comprise a frame; and an additive component(s) configured to couple to the frame. The additive component(s) may comprise a first extrusion unit, a second extrusion unit, and/or a third extrusion unit. The 3D printing system may be a portion of a hybrid computer numerical control (CNC) machining/3D printing system and configured to manufacture a 3D component autonomously from start to finish. The additive component(s) may comprise a heating system including a hot-air blower.
    Type: Application
    Filed: November 21, 2024
    Publication date: March 13, 2025
    Applicant: DC Precision Ceramics, LLC
    Inventor: David Crenshaw
  • Patent number: 12194586
    Abstract: An adaptable belt sander may comprise: a tool holder; a housing; a drive system comprising a first gear and a second gear configured to engage the first gear, the second gear coupled to a shaft; and a belt system comprising a belt extending from the shaft to a distal end of the adaptable belt sander, the adaptable belt sander configured to travel along a belt path in response to rotation of the shaft, the distal end having a rotating apparatus configured to engage the belt.
    Type: Grant
    Filed: January 5, 2023
    Date of Patent: January 14, 2025
    Assignee: DC PRECISION CERAMICS, LLC
    Inventor: David Crenshaw
  • Patent number: 12179417
    Abstract: A three-dimensional (3D) printing system may comprise a frame; and an additive component(s) configured to couple to the frame. The additive component(s) may comprise a first extrusion unit, a second extrusion unit, and/or a third extrusion unit. The 3D printing system may be a portion of a hybrid computer numerical control (CNC) machining/3D printing system and configured to manufacture a 3D component autonomously from start to finish. The additive component(s) may comprise a heating system including a hot-air blower.
    Type: Grant
    Filed: March 12, 2024
    Date of Patent: December 31, 2024
    Inventor: David Crenshaw
  • Patent number: 12179416
    Abstract: A three-dimensional (3D) printing system may comprise a frame; and an additive component(s) configured to couple to the frame. The additive component(s) may comprise a first extrusion unit, a second extrusion unit, and/or a third extrusion unit. The 3D printing system may be a portion of a hybrid computer numerical control (CNC) machining/3D printing system and configured to manufacture a 3D component autonomously from start to finish. The additive component(s) may comprise a heating system including a hot-air blower.
    Type: Grant
    Filed: June 4, 2021
    Date of Patent: December 31, 2024
    Inventor: David Crenshaw
  • Publication number: 20240416477
    Abstract: An adaptable belt sander may comprise: a tool holder; a housing; a drive system comprising a first gear and a second gear configured to engage the first gear, the second gear coupled to a shaft; and a belt system comprising a belt extending from the shaft to a distal end of the adaptable belt sander, the adaptable belt sander configured to travel along a belt path in response to rotation of the shaft, the distal end having a rotating apparatus configured to engage the belt.
    Type: Application
    Filed: January 5, 2023
    Publication date: December 19, 2024
    Applicant: DC PRECISION CERAMICS, LLC
    Inventor: David Crenshaw
  • Publication number: 20240253297
    Abstract: A three-dimensional (3D) printing system may comprise a frame; and an additive component(s) configured to couple to the frame. The additive component(s) may comprise a first extrusion unit, a second extrusion unit, and/or a third extrusion unit. The 3D printing system may be a portion of a hybrid computer numerical control (CNC) machining/3D printing system and configured to manufacture a 3D component autonomously from start to finish. The additive component(s) may comprise a heating system including a hot-air blower.
    Type: Application
    Filed: March 12, 2024
    Publication date: August 1, 2024
    Applicant: DC Precision Ceramics, LLC
    Inventor: David Crenshaw
  • Patent number: 11714472
    Abstract: A system for providing power over Ethernet emergency lighting is disclosed. The system includes a rechargeable battery pack that is charged without interfering with data signals present on a power over Ethernet link that provides normal lighting. The system includes a power loss monitor for monitoring the presence of normal lighting power present on a power over Ethernet link without interference.
    Type: Grant
    Filed: January 22, 2021
    Date of Patent: August 1, 2023
    Assignee: ABL IP Holdings, LLC
    Inventor: David Crenshaw
  • Publication number: 20230150186
    Abstract: A three-dimensional (3D) printing system may comprise a frame; and an additive component(s) configured to couple to the frame. The additive component(s) may comprise a first extrusion unit, a second extrusion unit, and/or a third extrusion unit. The 3D printing system may be a portion of a hybrid computer numerical control (CNC) machining/3D printing system and configured to manufacture a 3D component autonomously from start to finish. The additive component(s) may comprise a heating system including a hot-air blower.
    Type: Application
    Filed: June 4, 2021
    Publication date: May 18, 2023
    Applicant: DC Precision Ceramics, LLC
    Inventor: David Crenshaw
  • Publication number: 20220236781
    Abstract: A system for providing power over Ethernet emergency lighting is disclosed. The system includes a rechargeable battery pack that is charged without interfering with data signals present on a power over Ethernet link that provides normal lighting. The system includes a power loss monitor for monitoring the presence of normal lighting power present on a power over Ethernet link without interference.
    Type: Application
    Filed: January 22, 2021
    Publication date: July 28, 2022
    Inventor: David Crenshaw
  • Patent number: 10903682
    Abstract: A system for providing power over Ethernet emergency lighting is disclosed. The system includes a rechargeable battery pack that is charged without interfering with data signals present on a power over Ethernet link that provides normal lighting. The system includes a power loss monitor for monitoring the presence of normal lighting power present on a power over Ethernet link without interference.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: January 26, 2021
    Inventor: David Crenshaw
  • Patent number: 10779380
    Abstract: A system for providing power over Ethernet illuminated signage is provided. The system includes receiving lighting instructions via an Ethernet compatible communications protocol, translating those instructions to a lower bandwidth, slower protocol while passing through DC power. Illumination fixtures are powered by the passed-through power and operated in accordance with the translated instructions.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: September 15, 2020
    Assignee: ABL IP HOLDING LLC
    Inventors: David Crenshaw, Rafael Ordonez Gonzalez
  • Publication number: 20190356162
    Abstract: A system for providing power over Ethernet emergency lighting is disclosed. The system includes a rechargeable battery pack that is charged without interfering with data signals present on a power over Ethernet link that provides normal lighting. The system includes a power loss monitor for monitoring the presence of normal lighting power present on a power over Ethernet link without interference.
    Type: Application
    Filed: July 19, 2019
    Publication date: November 21, 2019
    Inventor: David Crenshaw
  • Publication number: 20190297710
    Abstract: A system for providing power over Ethernet illuminated signage is provided. The system includes receiving lighting instructions via an Ethernet compatible communications protocol, translating those instructions to a lower bandwidth, slower protocol while passing through DC power. Illumination fixtures are powered by the passed-through power and operated in accordance with the translated instructions.
    Type: Application
    Filed: March 21, 2019
    Publication date: September 26, 2019
    Inventors: David Crenshaw, Rafael Ordonez Gonzalez
  • Patent number: 10361583
    Abstract: A method for providing power over Ethernet emergency lighting is disclosed. The method includes detecting a loss of power over a POE link segment connected to a lighting fixture, and in response to the detection of a loss of power over the POE link segment, causing a relaying device to connect a lamp of the fixture to a backup battery.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: July 23, 2019
    Assignee: IOTA ENGINEERING LLC
    Inventor: David Crenshaw
  • Publication number: 20180183264
    Abstract: A system for providing power over Ethernet emergency lighting is disclosed. The system includes a rechargeable battery pack that is charged without interfering with data signals present on a power over Ethernet link that provides normal lighting. The system includes a power loss monitor for monitoring the presence of normal lighting power present on a power over Ethernet link without interference.
    Type: Application
    Filed: February 23, 2018
    Publication date: June 28, 2018
    Inventor: David Crenshaw
  • Patent number: 9941737
    Abstract: A system for providing power over Ethernet emergency lighting is disclosed. The system includes a rechargeable battery pack that is charged without interfering with data signals present on a power over Ethernet link that provides normal lighting. The system includes a power loss monitor for monitoring the presence of normal lighting power present on a power over Ethernet link without interference.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: April 10, 2018
    Inventor: David Crenshaw
  • Publication number: 20170271914
    Abstract: A system for providing power over Ethernet emergency lighting is disclosed. The system includes a rechargeable battery pack that is charged without interfering with data signals present on a power over Ethernet link that provides normal lighting. The system includes a power loss monitor for monitoring the presence of normal lighting power present on a power over Ethernet link without interference.
    Type: Application
    Filed: February 14, 2017
    Publication date: September 21, 2017
    Inventor: David Crenshaw
  • Patent number: 9609706
    Abstract: A luminaire for use with power over an Ethernet emergency lighting is disclosed. The luminaire includes a rechargeable battery pack, an emergency backup LED driver, a normal lighting LED driver and an LED lamp. The luminaire also includes a power loss monitor that monitors the presence of normal lighting power present on a power over Ethernet link, and connects the emergency backup LED driver to the LED lamp through a relaying device in the event of a loss of normal lighting power. Furthermore, a method of detecting the power loss in a POE link segment is provided, wherein the method includes detecting a differential DC voltage between a first conductor in a first data pair on the POE link segment and a second conductor in a second data pair on the same POE link segment.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: March 28, 2017
    Assignee: Iota Engineering LLC
    Inventor: David Crenshaw
  • Publication number: 20160273722
    Abstract: A system for providing power over Ethernet emergency lighting is disclosed. The system includes a rechargeable battery pack that is charged without interfering with data signals present on a power over Ethernet link that provides normal lighting. The system includes a power loss monitor for monitoring the presence of normal lighting power present on a power over Ethernet link without interference.
    Type: Application
    Filed: March 17, 2016
    Publication date: September 22, 2016
    Applicant: IOTA ENGINEERING LLC
    Inventor: David Crenshaw
  • Publication number: 20050258765
    Abstract: A supplemental arc maintenance electrical supply for a high density discharge (HID) lamp (L) for applying a high frequency supplemental arc voltage to maintain the arc during a period of unstable or intermittent AC supply in addition to or in lieu of the voltage or current being supplied to the lamp by the HID ballast (12). AC supply instability is identified in less time than the unstable or intermittent power will cause the lamp to arc to extingish and energize a supplemental arc maintenance electrical supply to maintain the arc of the lamp during the period of instability or interruption, so long as its internal, rechargeable battery is operational. The monitoring system (18) also recognizes the re-establishment of a stable (as by being a persistently repeating cycle but not necessarily a sinusoidal AC supply) repeating electrical power supply which is also of sufficient energy level to maintain operation of the HID lamp.
    Type: Application
    Filed: March 15, 2002
    Publication date: November 24, 2005
    Inventors: Reginald Rodriguez, David Crenshaw