Patents by Inventor Yichuan Pan

Yichuan Pan 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: 20230337873
    Abstract: A collapsible wheeled walker with two side frames and two height adjustable upper body supports. Each upper body support includes a height adjustment tube. And each height adjustment tube may be set to a recoupable height by a height memory device coupled to the height adjustment tube for quick an easy height setting. The apparatus may include a seat that is slidably attached to the two side frames and is movable between a front position to facilitate an ample walking space inside the frames and a rear position for a user to sit. It may include an X-folder that facilitates collapsing the walker to a small footprint It may also include two forearm gutters as, part of the upper both supports that give the user an upright walking posture for health benefits.
    Type: Application
    Filed: April 22, 2022
    Publication date: October 26, 2023
    Inventors: David A Purcell, Yichuan Pan
  • Publication number: 20210338516
    Abstract: The disclosure demonstrates a collapsible wheeled walker having two side frames supported above a walking surface with attached wheel assemblies. The side frames are interconnected by an X-folder apparatus. The X-folder apparatus has first and second elongate elements rotatably coupled to each other with the bottom ends of the elements rotatably attached to the bottoms of the side frames, and the top ends of the elements having perpendicular support elements that in the deployed open position, engage support brackets formed on the inner sides of the side frames. The support brackets have protrusions extending from bracket support surfaces to engage complementary apertures formed in the perpendicular support elements to provide stability to the wheeled walker.
    Type: Application
    Filed: July 13, 2021
    Publication date: November 4, 2021
    Applicant: ProtoStar, Inc., a Delaware Corporation
    Inventors: Peter James Fellingham, Craig Timothy Shugert, Yichuan Pan, Haibin Wu
  • Patent number: 11071676
    Abstract: The disclosure demonstrates a collapsible wheeled walker having two side frames supported above a walking surface with attached wheel assemblies. The side frames are interconnected by an X-folder apparatus. The X-folder apparatus has first and second elongate elements rotatably coupled to each other with the bottom ends of the elements rotatably attached to the bottoms of the side frames, and the top ends of the elements having perpendicular support elements that in the deployed open position, engage support brackets formed on the inner sides of the side frames. The support brackets have protrusions extending from bracket support surfaces to engage complementary apertures formed in the perpendicular support elements to provide stability to the wheeled walker.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: July 27, 2021
    Assignee: ProtoStar, Inc.
    Inventors: Peter James Fellingham, Craig Timothy Shugert, Yichuan Pan, Haibin Wu
  • Patent number: 10973730
    Abstract: A rollator including a frame having first and second side frames extending along respective ones of a pair of planes. First and second upper body supports are coupled to and disposable at an adjustable height above the frame. A pair of forearm gutters are coupled to respective ones of the first and second upper body supports for engaging and supporting a respective forearm of the user during use. Each forearm gutter includes a peripheral edge, a forward midpoint on the peripheral edge, and a rearward midpoint on the peripheral edge. Each forearm gutter defines a longitudinal axis bisecting the respective forearm gutter and passing through the forward midpoint and the rearward midpoint. The forward midpoint and the rearward midpoint on each forearm gutter fall between the pair of planes.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: April 13, 2021
    Assignee: Protostar, Inc., a Delaware Corporation
    Inventors: Peter James Fellingham, Yichuan Pan
  • Patent number: 10828226
    Abstract: A collapsible upright wheeled walker with adjustable armrests that support sufficient user upper-body weight to facilitate a natural upright gait and provide unassisted mobility for a wide range of mobility-impaired individuals. The apparatus may be easily and quickly folded (and unfolded) and may include bilateral stabilizing wheel suspensions to facilitate navigation over uneven terrain. The apparatus includes a frame-stiffening folder assembly and may also include mechanical brakes, an adjustable upper armrest assembly with removable padded forearm supports and two pairs of handles, at least one of which is disposed sufficiently forward to place the user within the polygonal footprint defined by the front and rear wheels to provide support without leaning, stooping, or risking falls.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: November 10, 2020
    Assignee: Protostar, Inc., a Delaware Corporation
    Inventors: Peter James Fellingham, Yichuan Pan, David A Purcell, Nebojsa Sataric
  • Publication number: 20200315901
    Abstract: The disclosure demonstrates a collapsible wheeled walker having two side frames supported above a walking surface with attached wheel assemblies. The side frames are interconnected by an X-folder apparatus. The X-folder apparatus has first and second elongate elements rotatably coupled to each other with the bottom ends of the elements rotatably attached to the bottoms of the side frames, and the top ends of the elements having perpendicular support elements that in the deployed open position, engage support brackets formed on the inner sides of the side frames. The support brackets have protrusions extending from bracket support surfaces to engage complementary apertures formed in the perpendicular support elements to provide stability to the wheeled walker.
    Type: Application
    Filed: March 31, 2020
    Publication date: October 8, 2020
    Applicant: ProtoStar, Inc., a Delaware Corporation
    Inventors: Peter James Fellingham, Craig Timothy Shugert, Yichuan Pan, Haibin Wu
  • Publication number: 20200222268
    Abstract: A rollator including a frame having first and second side frames extending along respective ones of a pair of planes. First and second upper body supports are coupled to and disposable at an adjustable height above the frame. A pair of forearm gutters are coupled to respective ones of the first and second upper body supports for engaging and supporting a respective forearm of the user during use. Each forearm gutter includes a peripheral edge, a forward midpoint on the peripheral edge, and a rearward midpoint on the peripheral edge. Each forearm gutter defines a longitudinal axis bisecting the respective forearm gutter and passing through the forward midpoint and the rearward midpoint. The forward midpoint and the rearward midpoint on each forearm gutter fall between the pair of planes.
    Type: Application
    Filed: March 31, 2020
    Publication date: July 16, 2020
    Applicant: Protostar, Inc., a Delaware Corporation
    Inventors: Peter James Fellingham, Yichuan Pan
  • Publication number: 20200206068
    Abstract: A collapsible upright wheeled walker with adjustable armrests that support sufficient user upper-body weight to facilitate a natural upright gait and provide unassisted mobility for a wide range of mobility-impaired individuals. The apparatus may be easily and quickly folded (and unfolded) and may include bilateral stabilizing wheel suspensions to facilitate navigation over uneven terrain. The apparatus includes a frame-stiffening folder assembly and may also include mechanical brakes, an adjustable upper armrest assembly with removable padded forearm supports and two pairs of handles, at least one of which is disposed sufficiently forward to place the user within the polygonal footprint defined by the front and rear wheels to provide support without leaning, stooping, or risking falls.
    Type: Application
    Filed: March 10, 2020
    Publication date: July 2, 2020
    Applicant: Protostar, Inc., a Delaware Corporation
    Inventors: Peter James Fellingham, Yichuan Pan, David A. Purcell, Nebojsa Sataric
  • Patent number: 10617592
    Abstract: A rollator including a frame having first and second side frames extending along respective ones of a pair of planes. First and second upper body supports are coupled to and disposable at an adjustable height above the frame. A pair of forearm gutters are coupled to respective ones of the first and second upper body supports for engaging and supporting a respective forearm of the user during use. Each forearm gutter includes a peripheral edge, a forward midpoint on the peripheral edge, and a rearward midpoint on the peripheral edge. Each forearm gutter defines a longitudinal axis bisecting the respective forearm gutter and passing through the forward midpoint and the rearward midpoint. The forward midpoint and the rearward midpoint on each forearm gutter fall between the pair of planes.
    Type: Grant
    Filed: October 2, 2018
    Date of Patent: April 14, 2020
    Assignee: PROTOSTAR, INC., A DELAWARE CORPORATION
    Inventors: Peter James Fellingham, Yichuan Pan
  • Patent number: 10588815
    Abstract: A collapsible upright wheeled walker with adjustable armrests that support sufficient user upper-body weight to facilitate a natural upright gait and provide unassisted mobility for a wide range of mobility-impaired individuals. The apparatus may be easily and quickly folded (and unfolded) and may include bilateral stabilizing wheel suspensions to facilitate navigation over uneven terrain. The apparatus includes a frame-stiffening folder assembly and may also include mechanical brakes, an adjustable upper armrest assembly with removable padded forearm supports and two pairs of handles, at least one of which is disposed sufficiently forward to place the user within the polygonal footprint defined by the front and rear wheels to provide support without leaning, stooping, or risking falls.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: March 17, 2020
    Assignee: Protostar, Inc.
    Inventors: Peter James Fellingham, Yichuan Pan, David A Purcell, Nebojsa Sataric
  • Patent number: 10555866
    Abstract: A collapsible wheeled walker with two side frames and two height adjustable upper body supports. The apparatus includes a plurality of wheel direction locks each coupled to a wheel and adapted to lock the wheel in fixed moving direction or to release the wheel to turn freely. The apparatus may include a seat that is slidably attached to the two side frames and is movable between a front position for walking inside the frames and a rear position sitting. The apparatus may be converted to a transport chair by locking front wheel and releasing the rear wheels, and sliding the movable seat to the rear position. It may include an X-folder that facilitates collapsing the walker to a small footprint. It may also include two forearm gutters as part of the upper body supports that give the user an upright walking posture for health benefits.
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: February 11, 2020
    Assignee: ProtoStar, Inc., a Delaware Corporation
    Inventors: Yichuan Pan, Peter James Fellingham, Zelin Zhang, David Allen Purcell, David Michael Petersen, Scott Allen Rieger
  • Patent number: 10434031
    Abstract: A collapsible wheeled walker with two side frames and two height adjustable upper body supports. The apparatus includes a seat that is slidably attached to the two side frames and is movable between a front position to facilitate an ample walking space inside the frames and a rear position for a user to sit. The apparatus may include an X-folder that facilitates collapsing the walker to a small footprint for storage and transportation. It may also include a left forearm gutter and a right forearm gutter as part of the upper body supports that give the user an upright walking posture for health benefits.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: October 8, 2019
    Assignee: ProtoStar, Inc., a Delaware Corporation
    Inventors: Yichuan Pan, Peter James Fellingham, Zelin Zhang, Craig Timothy Shugert, David Michael Petersen
  • Publication number: 20190254918
    Abstract: A collapsible upright wheeled walker with adjustable armrests that support sufficient user upper-body weight to facilitate a natural upright gait and provide unassisted mobility for a wide range of mobility-impaired individuals. The apparatus may be easily and quickly folded (and unfolded) and may include bilateral stabilizing wheel suspensions to facilitate navigation over uneven terrain. The apparatus includes a frame-stiffening folder assembly and may also include mechanical brakes, an adjustable upper armrest assembly with removable padded forearm supports and two pairs of handles, at least one of which is disposed sufficiently forward to place the user within the polygonal footprint defined by the front and rear wheels to provide support without leaning, stooping, or risking falls.
    Type: Application
    Filed: April 29, 2019
    Publication date: August 22, 2019
    Applicant: Protostar, Inc., a Delaware Corporation
    Inventors: Peter James Fellingham, Yichuan Pan, David A. Purcell, Nebojsa Sataric
  • Publication number: 20190247266
    Abstract: A collapsible wheeled walker with two side frames and two height adjustable upper body supports. The apparatus includes a seat that is slidably attached to the two side frames and is movable between a front position to facilitate an ample walking space inside the frames and a rear position for a user to sit. The apparatus may include an X-folder that facilitates collapsing the walker to a small footprint for storage and transportation. It may also include a left forearm gutter and a right forearm gutter as part of the upper body supports that give the user an upright walking posture for health benefits.
    Type: Application
    Filed: April 25, 2019
    Publication date: August 15, 2019
    Applicant: ProtoStar, Inc., a Delaware Corporation
    Inventors: Yichuan Pan, Peter James Fellingham, Zelin Zhang, Craig Timothy Shugert, David Michael Petersen
  • Patent number: 10322056
    Abstract: A collapsible upright wheeled walker with adjustable armrests that support sufficient user upper-body weight to facilitate a natural upright gait and provide unassisted mobility for a wide range of mobility-impaired individuals. The apparatus may be easily and quickly folded (and unfolded) and may include bilateral stabilizing wheel suspensions to facilitate navigation over uneven terrain. The apparatus includes a frame-stiffening folder assembly and may also include mechanical brakes, an adjustable upper armrest assembly with removable padded forearm supports and two pairs of handles, at least one of which is disposed sufficiently forward to place the user within the polygonal footprint defined by the front and rear wheels to provide support without leaning, stooping, or risking falls.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: June 18, 2019
    Assignee: Protostar, Inc., a Delaware Corporation
    Inventors: Peter James Fellingham, Yichuan Pan, David A Purcell, Nebojsa Sataric
  • Patent number: 10307321
    Abstract: A collapsible wheeled walker with two side frames and two height adjustable upper body supports. The apparatus includes a seat that is slidably attached to the two side frames and is movable between a front position to facilitate an ample walking space inside the frames and a rear position for a user to sit. The apparatus may include an X-folder that facilitates collapsing the walker to a small footprint for storage and transportation. It may also include a left forearm gutter and a right forearm gutter as part of the upper body supports that give the user an upright walking posture for health benefits.
    Type: Grant
    Filed: January 20, 2018
    Date of Patent: June 4, 2019
    Assignee: ProtoStar, Inc., a Delaware Corporation
    Inventors: Yichuan Pan, Peter James Fellingham, Zelin Zhang, Craig Timothy Shugert, David Michael Petersen
  • Publication number: 20190105222
    Abstract: A rollator including a frame having first and second side frames extending along respective ones of a pair of planes. First and second upper body supports are coupled to and disposable at an adjustable height above the frame. A pair of forearm gutters are coupled to respective ones of the first and second upper body supports for engaging and supporting a respective forearm of the user during use. Each forearm gutter includes a peripheral edge, a forward midpoint on the peripheral edge, and a rearward midpoint on the peripheral edge. Each forearm gutter defines a longitudinal axis bisecting the respective forearm gutter and passing through the forward midpoint and the rearward midpoint. The forward midpoint and the rearward midpoint on each forearm gutter fall between the pair of planes.
    Type: Application
    Filed: October 2, 2018
    Publication date: April 11, 2019
    Applicant: Protostar, Inc., a Delaware Corporation
    Inventors: Peter James Fellingham, Yichuan Pan
  • Publication number: 20190105221
    Abstract: A collapsible wheeled walker with two side frames and two height adjustable upper body supports. The apparatus includes a seat that is slidably attached to the two side frames and is movable between a front position to facilitate an ample walking space inside the frames and a rear position for a user to sit. The apparatus may include an X-folder that facilitates collapsing the walker to a small footprint for storage and transportation. It may also include a left forearm gutter and a right forearm gutter as part of the upper body supports that give the user an upright walking posture for health benefits.
    Type: Application
    Filed: January 20, 2018
    Publication date: April 11, 2019
    Applicant: ProtoStar, Inc., a Delaware Corporation
    Inventors: Yichuan Pan, Peter James Fellingham, Zelin Zhang, Craig Timothy Shugert, David Michael Petersen
  • Patent number: D874351
    Type: Grant
    Filed: October 4, 2018
    Date of Patent: February 4, 2020
    Assignee: Protostar, Inc., A Delaware Corporation
    Inventors: Peter James Fellingham, Zelin Zhang, Yichuan Pan, Craig Timothy Shugert
  • Patent number: D902791
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: November 24, 2020
    Assignee: ProtoStar, Inc., a Delaware Corporation
    Inventors: Peter James Fellingham, Craig Timothy Shugert, Yichuan Pan