Patents by Inventor Ian Allen Duncan

Ian Allen Duncan 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).

  • ROTARY POWER TOOL INCLUDING TRANSMISSION HOUSING BUSHING
    Publication number: 20230017720
    Abstract: A rotary power tool comprises a drive mechanism including an electric motor and a transmission, a housing enclosing at least a portion of the drive mechanism, a spindle rotatable in response to receiving torque from the drive mechanism, a first ratchet coupled for co-rotation with the spindle, a second ratchet rotationally fixed to the housing, a sleeve bushing supported by the housing, and a bearing rotatably supporting the spindle. The spindle has an outer race. And, the outer race of the bearing moves along the sleeve bushing during reciprocation of the spindle when the first ratchet and second ratchet are engaged.
    Type: Application
    Filed: September 7, 2022
    Publication date: January 19, 2023
    Inventors: Ryan A. Dedrickson, Ian Allen Duncan, Tian Yu, Jian Wei Li
  • Rotary power tool including transmission housing bushing
    Patent number: 11440173
    Abstract: A rotary power tool comprises a drive mechanism including an electric motor and a transmission, a housing enclosing at least a portion of the drive mechanism, a spindle rotatable in response to receiving torque from the drive mechanism, a first ratchet coupled for co-rotation with the spindle, a second ratchet rotationally fixed to the housing, a sleeve bushing on an interior of the housing, and a bearing arranged between the spindle and the sleeve bushing and rotatably supporting the spindle. The bearing has an outer race. The spindle is movable relative to the housing in response to contact with a workpiece, causing the first and second ratchets to engage and the spindle to reciprocate while rotating. The outer race of the bearing moves along the sleeve bushing during reciprocation of the spindle when the first ratchet and second ratchet are engaged.
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: September 13, 2022
    Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
    Inventors: Ryan A. Dedrickson, Ian Allen Duncan, Tian Yu, Jian Wei Li
  • ROTARY POWER TOOL INCLUDING TRANSMISSION HOUSING BUSHING
    Publication number: 20220009071
    Abstract: A rotary power tool comprises a drive mechanism including an electric motor and a transmission, a housing enclosing at least a portion of the drive mechanism, a spindle rotatable in response to receiving torque from the drive mechanism, a first ratchet coupled for co-rotation with the spindle, a second ratchet rotationally fixed to the housing, a sleeve bushing on an interior of the housing, and a bearing arranged between the spindle and the sleeve bushing and rotatably supporting the spindle. The bearing has an outer race. The spindle is movable relative to the housing in response to contact with a workpiece, causing the first and second ratchets to engage and the spindle to reciprocate while rotating. The outer race of the bearing moves along the sleeve bushing during reciprocation of the spindle when the first ratchet and second ratchet are engaged.
    Type: Application
    Filed: September 17, 2021
    Publication date: January 13, 2022
    Inventors: Ryan A. Dedrickson, Ian Allen Duncan, Tian Yu, Jian Wei Li
  • Rotary power tool including transmission housing bushing
    Patent number: 11148273
    Abstract: A rotary power tool comprises a drive mechanism including an electric motor and a transmission, a housing enclosing at least a portion of the drive mechanism, a spindle rotatable in response to receiving torque from the drive mechanism, a first ratchet coupled for co-rotation with the spindle, a second ratchet rotationally fixed to the housing, a sleeve bushing on an interior of the housing, and a bearing arranged between the spindle and the sleeve bushing and rotatably supporting the spindle. The bearing has an outer race. The spindle is movable relative to the housing in response to contact with a workpiece, causing the first and second ratchets to engage and the spindle to reciprocate while rotating. The outer race of the bearing moves along the sleeve bushing during reciprocation of the spindle when the first ratchet and second ratchet are engaged.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: October 19, 2021
    Assignee: Milwaukee Electric Tool Corporation
    Inventors: Ryan A. Dedrickson, Ian Allen Duncan, Tian Yu, Jian Wei Li
  • ROTARY POWER TOOL INCLUDING TRANSMISSION HOUSING BUSHING
    Publication number: 20190299383
    Abstract: A rotary power tool comprises a drive mechanism including an electric motor and a transmission, a housing enclosing at least a portion of the drive mechanism, a spindle rotatable in response to receiving torque from the drive mechanism, a first ratchet coupled for co-rotation with the spindle, a second ratchet rotationally fixed to the housing, a sleeve bushing on an interior of the housing, and a bearing arranged between the spindle and the sleeve bushing and rotatably supporting the spindle. The bearing has an outer race. The spindle is movable relative to the housing in response to contact with a workpiece, causing the first and second ratchets to engage and the spindle to reciprocate while rotating. The outer race of the bearing moves along the sleeve bushing during reciprocation of the spindle when the first ratchet and second ratchet are engaged.
    Type: Application
    Filed: March 21, 2019
    Publication date: October 3, 2019
    Inventors: Ryan A. Dedrickson, Ian Allen Duncan, Tian Yu, Jian Wei Li