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公开(公告)号：US20220239241A1
公开(公告)日：2022-07-28
申请号：US17718762
申请日：2022-04-12
Applicant: Graco Minnesota Inc.
Inventor： Tyler J. Kruzel
Abstract: A fluid sprayer includes a housing, a pump, a nozzle, a high voltage direct current (HVDC) brushed electric motor that drives the pump, and a motor controller electrically connected to the motor. The motor controller drives the motor with a high speed pulse width modulated (PWM) drive signal that switches current through the motor on and off. The motor controller varies the PWM signal as a function of a spray setting input and sensed current through the motor.
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Patent Agency Ranking
公开(公告)号：US11518253B2
公开(公告)日：2022-12-06
申请号：US16689829
申请日：2019-11-20
Applicant: Graco Minnesota Inc.
Inventor： Joshua D. Roden , Tyler J. Kruzel , James C. Schroeder , Mark D. Shultz , David M. Larsen
Abstract: A battery powered driver for propelling a wheeled ground surface modifying machine includes at least one wheel contacting a ground surface, a battery powered electric motor, control circuitry configured to manage delivery of electrical battery power to the electric motor to control a sped of the driver, at least one pedal attached to a pedal axle and tiltable in each of a forward and rearward direction with respect to the pedal axle, and at least one pedal tilt sensor configured to output one or more signals to the control circuitry indicating a degree of tilt of the at least one pedal. The control circuitry is configured to control the electric motor to accelerate the driver forward based on the one or more signals indicating a forward tilt of the at least one pedal, the electrical battery power delivered to the electric motor for forward acceleration proportional to a degree of forward tilt of the at least one pedal, and to control the electric motor to accelerate the driver rearward based on the one or more signals indicating a rearward tilt of at least one pedal, the electrical battery power delivered to the electric motor for rearward acceleration proportional to a degree of rearward tilt of the at least one pedal.
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公开(公告)号：US11689129B2
公开(公告)日：2023-06-27
申请号：US17718762
申请日：2022-04-12
Applicant: Graco Minnesota Inc.
Inventor： Tyler J. Kruzel
CPC classification number: H02P7/29 , B05B9/0861 , H02M7/219 , H02P7/05
Abstract: A fluid sprayer includes a housing, a pump, a nozzle, a high voltage direct current (HVDC) brushed electric motor that drives the pump, and a motor controller electrically connected to the motor. The motor controller drives the motor with a high speed pulse width modulated (PWM) drive signal that switches current through the motor on and off. The motor controller varies the PWM signal as a function of a spray setting input and sensed current through the motor.
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公开(公告)号：US11323051B2
公开(公告)日：2022-05-03
申请号：US16476955
申请日：2018-01-15
Applicant: Graco Minnesota Inc.
Inventor： Tyler J. Kruzel
Abstract: A fluid sprayer includes a housing, a pump, a nozzle, a high voltage direct current (HVDC) brushed electric motor that drives the pump, and a motor controller electrically connected to the motor. The motor controller drives the motor with a high speed pulse width modulated (PWM) drive signal that switches current through the motor on and off. The motor controller varies the PWM signal as a function of a spray setting input and sensed current through the motor.
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公开(公告)号：US20230059159A1
公开(公告)日：2023-02-23
申请号：US17980738
申请日：2022-11-04
Applicant: Graco Minnesota Inc.
Inventor： Joshua D. Roden , Tyler J. Kruzel , James C. Schroeder , Mark D. Shultz , David M. Larsen
Abstract: A battery powered driver for propelling a wheeled ground surface modifying machine includes at least one wheel contacting a ground surface, a battery powered electric motor, control circuitry configured to manage delivery of electrical battery power to the electric motor to control a sped of the driver, at least one pedal attached to a pedal axle and tiltable in each of a forward and rearward direction with respect to the pedal axle, and at least one pedal tilt sensor configured to output one or more signals to the control circuitry indicating a degree of tilt of the at least one pedal. The control circuitry is configured to control the electric motor to accelerate the driver forward based on the one or more signals indicating a forward tilt of the at least one pedal, the electrical battery power delivered to the electric motor for forward acceleration proportional to a degree of forward tilt of the at least one pedal, and to control the electric motor to accelerate the driver rearward based on the one or more signals indicating a rearward tilt of at least one pedal, the electrical battery power delivered to the electric motor for rearward acceleration proportional to a degree of rearward tilt of the at least one pedal.
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公开(公告)号：US20200164752A1
公开(公告)日：2020-05-28
申请号：US16689829
申请日：2019-11-20
Applicant: Graco Minnesota Inc.
Inventor： Joshua D. Roden , Tyler J. Kruzel , James C. Schroeder , Mark D. Shultz , David M. Larsen
Abstract: A battery powered driver for propelling a wheeled ground surface modifying machine includes at least one wheel contacting a ground surface, a battery powered electric motor, control circuitry configured to manage delivery of electrical battery power to the electric motor to control a sped of the driver, at least one pedal attached to a pedal axle and tiltable in each of a forward and rearward direction with respect to the pedal axle, and at least one pedal tilt sensor configured to output one or more signals to the control circuitry indicating a degree of tilt of the at least one pedal. The control circuitry is configured to control the electric motor to accelerate the driver forward based on the one or more signals indicating a forward tilt of the at least one pedal, the electrical battery power delivered to the electric motor for forward acceleration proportional to a degree of forward tilt of the at least one pedal, and to control the electric motor to accelerate the driver rearward based on the one or more signals indicating a rearward tilt of at least one pedal, the electrical battery power delivered to the electric motor for rearward acceleration proportional to a degree of rearward tilt of the at least one pedal.
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