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).
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Publication number: 20230337873Abstract: 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: ApplicationFiled: April 22, 2022Publication date: October 26, 2023Inventors: David A Purcell, Yichuan Pan
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Publication number: 20210338516Abstract: 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: ApplicationFiled: July 13, 2021Publication date: November 4, 2021Applicant: ProtoStar, Inc., a Delaware CorporationInventors: Peter James Fellingham, Craig Timothy Shugert, Yichuan Pan, Haibin Wu
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Patent number: 11071676Abstract: 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: GrantFiled: March 31, 2020Date of Patent: July 27, 2021Assignee: ProtoStar, Inc.Inventors: Peter James Fellingham, Craig Timothy Shugert, Yichuan Pan, Haibin Wu
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Patent number: 10973730Abstract: 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: GrantFiled: March 31, 2020Date of Patent: April 13, 2021Assignee: Protostar, Inc., a Delaware CorporationInventors: Peter James Fellingham, Yichuan Pan
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Patent number: 10828226Abstract: 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: GrantFiled: March 10, 2020Date of Patent: November 10, 2020Assignee: Protostar, Inc., a Delaware CorporationInventors: Peter James Fellingham, Yichuan Pan, David A Purcell, Nebojsa Sataric
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Publication number: 20200315901Abstract: 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: ApplicationFiled: March 31, 2020Publication date: October 8, 2020Applicant: ProtoStar, Inc., a Delaware CorporationInventors: Peter James Fellingham, Craig Timothy Shugert, Yichuan Pan, Haibin Wu
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Publication number: 20200222268Abstract: 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: ApplicationFiled: March 31, 2020Publication date: July 16, 2020Applicant: Protostar, Inc., a Delaware CorporationInventors: Peter James Fellingham, Yichuan Pan
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Publication number: 20200206068Abstract: 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: ApplicationFiled: March 10, 2020Publication date: July 2, 2020Applicant: Protostar, Inc., a Delaware CorporationInventors: Peter James Fellingham, Yichuan Pan, David A. Purcell, Nebojsa Sataric
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Patent number: 10617592Abstract: 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: GrantFiled: October 2, 2018Date of Patent: April 14, 2020Assignee: PROTOSTAR, INC., A DELAWARE CORPORATIONInventors: Peter James Fellingham, Yichuan Pan
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Patent number: 10588815Abstract: 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: GrantFiled: April 29, 2019Date of Patent: March 17, 2020Assignee: Protostar, Inc.Inventors: Peter James Fellingham, Yichuan Pan, David A Purcell, Nebojsa Sataric
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Patent number: 10555866Abstract: 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: GrantFiled: January 15, 2018Date of Patent: February 11, 2020Assignee: ProtoStar, Inc., a Delaware CorporationInventors: Yichuan Pan, Peter James Fellingham, Zelin Zhang, David Allen Purcell, David Michael Petersen, Scott Allen Rieger
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Patent number: 10434031Abstract: 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: GrantFiled: April 25, 2019Date of Patent: October 8, 2019Assignee: ProtoStar, Inc., a Delaware CorporationInventors: Yichuan Pan, Peter James Fellingham, Zelin Zhang, Craig Timothy Shugert, David Michael Petersen
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Publication number: 20190254918Abstract: 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: ApplicationFiled: April 29, 2019Publication date: August 22, 2019Applicant: Protostar, Inc., a Delaware CorporationInventors: Peter James Fellingham, Yichuan Pan, David A. Purcell, Nebojsa Sataric
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Publication number: 20190247266Abstract: 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: ApplicationFiled: April 25, 2019Publication date: August 15, 2019Applicant: ProtoStar, Inc., a Delaware CorporationInventors: Yichuan Pan, Peter James Fellingham, Zelin Zhang, Craig Timothy Shugert, David Michael Petersen
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Patent number: 10322056Abstract: 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: GrantFiled: August 28, 2018Date of Patent: June 18, 2019Assignee: Protostar, Inc., a Delaware CorporationInventors: Peter James Fellingham, Yichuan Pan, David A Purcell, Nebojsa Sataric
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Patent number: 10307321Abstract: 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: GrantFiled: January 20, 2018Date of Patent: June 4, 2019Assignee: ProtoStar, Inc., a Delaware CorporationInventors: Yichuan Pan, Peter James Fellingham, Zelin Zhang, Craig Timothy Shugert, David Michael Petersen
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Publication number: 20190105222Abstract: 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: ApplicationFiled: October 2, 2018Publication date: April 11, 2019Applicant: Protostar, Inc., a Delaware CorporationInventors: Peter James Fellingham, Yichuan Pan
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Publication number: 20190105221Abstract: 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: ApplicationFiled: January 20, 2018Publication date: April 11, 2019Applicant: ProtoStar, Inc., a Delaware CorporationInventors: Yichuan Pan, Peter James Fellingham, Zelin Zhang, Craig Timothy Shugert, David Michael Petersen
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Patent number: D874351Type: GrantFiled: October 4, 2018Date of Patent: February 4, 2020Assignee: Protostar, Inc., A Delaware CorporationInventors: Peter James Fellingham, Zelin Zhang, Yichuan Pan, Craig Timothy Shugert
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Patent number: D902791Type: GrantFiled: September 3, 2019Date of Patent: November 24, 2020Assignee: ProtoStar, Inc., a Delaware CorporationInventors: Peter James Fellingham, Craig Timothy Shugert, Yichuan Pan