Patents by Inventor Christopher A. Holman

Christopher A. Holman 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: 20260175463
    Abstract: Outdoor tools and lubrication systems, including methods of operating the same, are provided. An outdoor tool or lubrication system includes a housing, a motor assembly attached to the housing, a tool unit, and a lubrication system. The tool unit may be powered by the motor assembly and include a guide bar and a chain circumscribing a portion of the guide bar. The lubrication system may provide lubricant to the chain. The lubrication system may include a lubricant reservoir attached to the housing to contain a volume of the lubricant, a lubricant output directed toward the guide bar in fluid communication with the lubricant reservoir, and a reversible lubricant pump disposed in fluid communication between the lubricant reservoir and the lubricant output to alternately motivate a first lubricant flow from the lubricant reservoir and a second lubricant flow to the lubricant reservoir.
    Type: Application
    Filed: December 5, 2025
    Publication date: June 25, 2026
    Inventors: Scott W. Reed, Christopher A. Holman
  • Publication number: 20260123575
    Abstract: A lawnmower including a motor; a blade having a sharpened edge; and a quick release system configured to releasably couple the blade to the motor, the quick release system including: a user-actuatable interface movable between an engaged position and a release position; a blade engagement element; and a linkage coupled to the user-actuatable interface and configured to drive the blade engagement element between an engaged state and a release state in response to movement of the user-actuatable interface between the engaged and release positions.
    Type: Application
    Filed: October 30, 2025
    Publication date: May 7, 2026
    Inventor: Christopher A. Holman
  • Publication number: 20260053088
    Abstract: A power tool and an accessory mount device are provided. The device includes a driven member, a plate, and a flyweight comprising a first flyweight portion configured to translate along the first direction and contact the plate. The flyweight includes a second flyweight portion configured to translate along the second direction. The flyweight is positioned at a hinge between the first flyweight portion and the second flyweight portion and is configured to rotate along the hinge to push the first flyweight portion to the plate and translate the plate and the driven member along the first direction toward the first end when a rotational speed threshold about the first axis is exceeded.
    Type: Application
    Filed: October 31, 2025
    Publication date: February 26, 2026
    Inventors: Ronald J. Hoffman, Christopher A. Holman
  • Patent number: 12477978
    Abstract: A power tool and an accessory mount device are provided. The device includes a driven member, a plate, and a flyweight comprising a first flyweight portion configured to translate along the first direction and contact the plate. The flyweight includes a second flyweight portion configured to translate along the second direction. The flyweight is positioned at a hinge between the first flyweight portion and the second flyweight portion and is configured to rotate along the hinge to push the first flyweight portion to the plate and translate the plate and the driven member along the first direction toward the first end when a rotational speed threshold about the first axis is exceeded.
    Type: Grant
    Filed: November 9, 2022
    Date of Patent: November 25, 2025
    Assignee: Techtronic Cordless GP
    Inventors: Ronald J. Hoffman, Christopher A. Holman
  • Patent number: 12215717
    Abstract: A blower vacuum, the blower vacuum including a nozzle forming a first opening, a fan housing in fluid communication with the nozzle, an inlet exhaust housing rotatably coupled to the fan housing, and a debris housing. The fan housing forms a second opening. A fan assembly is positioned at the fan housing. The inlet exhaust housing includes an inlet portion and an exhaust portion. The inlet exhaust housing is rotatable to a first position forming a blower operation and a second position forming a vacuum operation. The debris housing is coupled to the exhaust portion of the inlet exhaust housing.
    Type: Grant
    Filed: February 27, 2024
    Date of Patent: February 4, 2025
    Assignee: TECHTRONIC CORDLESS GP
    Inventors: Lance Eckard, Jr., Christopher A. Holman, Ronald J. Hoffman
  • Publication number: 20240335972
    Abstract: A chainsaw and a drive system therefor are provided. The drive system includes a motor operably coupled to drive a motor shaft and an output drive operably coupled to an output shaft. The motor shaft and the output shaft are mechanically coupled to one another by a transmission system to transfer energy from the motor to the output drive. The motor and motor shaft are coupled to a housing. The transmission system allows the output shaft to selectively change positions along a circumferential direction relative to a rotational axis of the motor shaft to selectively loosen or tighten a connection of the output drive to a chain at a guide bar.
    Type: Application
    Filed: March 21, 2024
    Publication date: October 10, 2024
    Inventors: Christopher A. Holman, Lance Eckard, Ronald H. Hoffman, Brett Steenwyk
  • Publication number: 20240200577
    Abstract: A blower vacuum, the blower vacuum including a nozzle forming a first opening, a fan housing in fluid communication with the nozzle, an inlet exhaust housing rotatably coupled to the fan housing, and a debris housing. The fan housing forms a second opening. A fan assembly is positioned at the fan housing. The inlet exhaust housing includes an inlet portion and an exhaust portion. The inlet exhaust housing is rotatable to a first position forming a blower operation and a second position forming a vacuum operation. The debris housing is coupled to the exhaust portion of the inlet exhaust housing.
    Type: Application
    Filed: February 27, 2024
    Publication date: June 20, 2024
    Inventors: Lance Eckard, JR., Christopher A. Holman, Ronald J. Hoffman
  • Patent number: 11946490
    Abstract: A blower vacuum, the blower vacuum including a nozzle forming a first opening, a fan housing in fluid communication with the nozzle, an inlet exhaust housing rotatably coupled to the fan housing, and a debris housing. The fan housing forms a second opening. A fan assembly is positioned at the fan housing. The inlet exhaust housing includes an inlet portion and an exhaust portion. The inlet exhaust housing is rotatable to a first position forming a blower operation and a second position forming a vacuum operation. The debris housing is coupled to the exhaust portion of the inlet exhaust housing.
    Type: Grant
    Filed: March 13, 2023
    Date of Patent: April 2, 2024
    Assignee: Techtronic Cordless GP
    Inventors: Lance Eckard, Christopher A. Holman, Ronald J. Hoffman
  • Patent number: 11840838
    Abstract: A gutter cleaner comprising: a fan assembly configured to generate airflow to blow debris from a gutter; a cage at least partially disposed around the fan assembly and configured to prevent ingress of clogging debris into the fan assembly; and at least one wheel configured to roll along the gutter and at least partially support the gutter cleaner, wherein the at least one wheel is non-powered, and wherein the gutter cleaner is self-aligning on the gutter.
    Type: Grant
    Filed: January 13, 2021
    Date of Patent: December 12, 2023
    Assignee: Techtronic Cordless GP
    Inventors: Christopher A. Holman, Ronald J. Hoffman
  • Publication number: 20230292658
    Abstract: A power tool and an accessory mount device are provided. The device includes a driven member, a plate, and a flyweight comprising a first flyweight portion configured to translate along the first direction and contact the plate. The flyweight includes a second flyweight portion configured to translate along the second direction. The flyweight is positioned at a hinge between the first flyweight portion and the second flyweight portion and is configured to rotate along the hinge to push the first flyweight portion to the plate and translate the plate and the driven member along the first direction toward the first end when a rotational speed threshold about the first axis is exceeded.
    Type: Application
    Filed: November 9, 2022
    Publication date: September 21, 2023
    Inventors: Ronald J. Hoffman, Christopher A. Holman
  • Publication number: 20230287902
    Abstract: A blower vacuum, the blower vacuum including a nozzle forming a first opening, a fan housing in fluid communication with the nozzle, an inlet exhaust housing rotatably coupled to the fan housing, and a debris housing. The fan housing forms a second opening. A fan assembly is positioned at the fan housing. The inlet exhaust housing includes an inlet portion and an exhaust portion. The inlet exhaust housing is rotatable to a first position forming a blower operation and a second position forming a vacuum operation. The debris housing is coupled to the exhaust portion of the inlet exhaust housing.
    Type: Application
    Filed: March 13, 2023
    Publication date: September 14, 2023
    Inventors: Lance Eckard, Christopher A. Holman, Ronald J. Hoffman
  • Publication number: 20220377974
    Abstract: A subassembly for a trimmer head of a power tool, the subassembly including: a flywheel; and a cartridge including a segment of trimmer line, wherein the cartridge is removably keyed to the flywheel, wherein the subassembly is configured to be operatively coupled to a motor of the power tool, and wherein the subassembly is removably positionable in a housing of the power tool.
    Type: Application
    Filed: May 23, 2022
    Publication date: December 1, 2022
    Inventors: Ronald J. Hoffman, Christopher A. Holman
  • Patent number: 11503763
    Abstract: Trimmer heads for trimmers are provided. A trimmer head includes a drive plate defining a lug slot, and a locking lug, the locking lug movably positioned in the lug slot and movable between an unlocked position and a locked position. A trimmer head further includes a drive plate cover connectable to the drive plate such that the locking lug is disposed between the drive plate and the drive plate cover. A trimmer head farther includes at least one operational head, the at least one operational head connectable to the drive plate. The connected operational head is locked to the drive plate when the locking lug is in the locked position and the connected operational head is unlocked from the drive plate when the locking lug is in the unlocked position.
    Type: Grant
    Filed: January 2, 2020
    Date of Patent: November 22, 2022
    Assignee: Techtronic Cordless GP
    Inventors: Christopher A. Holman, Ronald J. Hoffman, J. Eric Nolin
  • Publication number: 20220280957
    Abstract: Fluid delivery systems for use with power tools are provided. A fluid delivery system can include a reservoir configured to contain fluid; a manifold including a plurality of nozzles configured to be disposed at an airflow outlet of the power tool, the manifold being in fluid communication with the reservoir; a pump configured to supply fluid from the reservoir to the manifold to dispense the fluid through at least some of the plurality of nozzles; and an attachment element configured to selectively couple the manifold with the airflow outlet of the power tool.
    Type: Application
    Filed: February 25, 2022
    Publication date: September 8, 2022
    Inventors: Ronald J. Hoffman, Christopher A. Holman, Scott W. Reed
  • Publication number: 20220010798
    Abstract: A blower including a housing at least partially defining a chamber, a motor including a drive shaft defining a rotational axis, and an impeller drive by the motor to generate an air flow in the chamber. The blower also includes a coupler operably connected between the drive shaft and the impeller to transmit torque therebetween, the coupler being connected to one of the drive shaft and the impeller and including a plurality of ribs configured to engage the other of the drive shaft and the impeller, each rib defining a rib axis transverse to the rotational axis, each rib axis being arranged tangent to a circle centered on the rotational axis.
    Type: Application
    Filed: September 27, 2021
    Publication date: January 13, 2022
    Inventors: Ronald J. Hoffman, Eric Nolin, Christopher A. Holman, Lance A. Eckard
  • Patent number: 11185198
    Abstract: A blower includes a main body which includes a housing and a fan disposed in the housing. The housing further defines an air discharge opening. The blower further includes an extension tube connected to the air discharge opening, the extension tube extending between a first end connected to the air discharge opening and a second end. The blower further includes a variable nozzle, the variable nozzle including a plurality of adjustable air control surfaces. The blower further includes a nozzle adjustment tube connected to the second end of the extension tube and at least partially surrounding the variable nozzle.
    Type: Grant
    Filed: April 9, 2019
    Date of Patent: November 30, 2021
    Assignee: TECHTRONIC CORDLESS GP
    Inventors: Ronald J. Hoffman, Christopher A. Holman, Eric Nolin
  • Patent number: 11156224
    Abstract: A blower including a housing at least partially defining a chamber, a motor including a drive shaft defining a rotational axis, an impeller driven by the motor to generate an air flow in the chamber, and a coupler operably connected between the drive shaft and the impeller. The chamber may have an axial height which increases from a position proximate a back plate to a position spaced from the back plate. The chamber may have a non-circular cross-section proximate a chamber outlet, and a tube assembly in fluid communication with the chamber may have a tube inlet with a non-circular cross-section. The impeller may define two separate airflow paths each having an inlet and an outlet.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: October 26, 2021
    Assignee: TTI (MACAO COMMERCIAL OFFSHORE) LIMITED
    Inventors: Ronald J. Hoffman, Eric Nolin, Christopher A. Holman, Lance A. Eckard
  • Publication number: 20210262236
    Abstract: A gutter cleaner comprising: a fan assembly; a guide configured to at least partially support the fan assembly on a gutter, wherein the guide comprises a skid configured to slide along the gutter; a handle coupled to the fan assembly at a location adjacent to a first axial end of the handle; and a battery port disposed at a location adjacent to a second axial end of the handle, the second axial end of the handle being opposite the first axial end of the handle, wherein the gutter cleaner is supportable via the handle by an operator located at an elevation below the gutter, and wherein the gutter cleaner has an approximately neutral operational buoyancy.
    Type: Application
    Filed: January 20, 2021
    Publication date: August 26, 2021
    Inventors: Christopher A. Holman, Ronald J. Hoffman
  • Publication number: 20210254344
    Abstract: A gutter cleaner comprising: a fan assembly configured to generate airflow to blow debris from a gutter; a cage at least partially disposed around the fan assembly and configured to prevent ingress of clogging debris into the fan assembly; and at least one wheel configured to roll along the gutter and at least partially support the gutter cleaner, wherein the at least one wheel is non-powered, and wherein the gutter cleaner is self-aligning on the gutter.
    Type: Application
    Filed: January 13, 2021
    Publication date: August 19, 2021
    Inventors: Christopher A. Holman, Ronald J. Hoffman
  • Publication number: 20200214202
    Abstract: Trimmer heads for trimmers are provided. A trimmer head includes a drive plate defining a lug slot, and a locking lug, the locking lug movably positioned in the lug slot and movable between an unlocked position and a locked position. A trimmer head further includes a drive plate cover connectable to the drive plate such that the locking lug is disposed between the drive plate and the drive plate cover. A trimmer head farther includes at least one operational head, the at least one operational head connectable to the drive plate. The connected operational head is locked to the drive plate when the locking lug is in the locked position and the connected operational head is unlocked from the drive plate when the locking lug is in the unlocked position.
    Type: Application
    Filed: January 2, 2020
    Publication date: July 9, 2020
    Inventors: Christopher A. Holman, Ronald J. Hoffman, J. Eric Nolin