Patents by Inventor David Purcell

David Purcell 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).

  • Patent number: 11918200
    Abstract: Meniscal extrusion can occur due detachment of the knee capsule from structures of the knee. Disclosed herein are methods to repair the meniscal detachment. Additionally, cadaveric and synthetic models can be used to teach said methods of repair.
    Type: Grant
    Filed: June 3, 2021
    Date of Patent: March 5, 2024
    Assignee: Arthrex, Inc.
    Inventors: David Crane, George Paletta, John Purcell, Andrew Osika, Robert Harrison
  • 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
  • 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: 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: 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
  • 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: 20190191205
    Abstract: Devices, computer-readable media, and methods for presenting a secondary content in connection with a presentation of a video program on a primary screen device are disclosed. For example, a processing system may receive a timed event metadata set associated with a video program, receive a timestamp associated with the video program from a primary screen device, and detect that the timestamp matches a timed event record from the timed event metadata set. The processing system may additionally access a secondary content in accordance with the timed event record in response to the detecting and present the secondary content on a screen of the device.
    Type: Application
    Filed: December 19, 2017
    Publication date: June 20, 2019
    Inventors: David B. DeLorme, Dale W. Malik, David Purcell
  • 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
  • Publication number: 20180360686
    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: August 28, 2018
    Publication date: December 20, 2018
    Applicant: Protostar, Inc., a Delaware Corporation
    Inventors: Peter James Fellingham, Yichuan Pan, David A Purcell, Nebojsa Sataric
  • Publication number: 20180280226
    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: January 25, 2017
    Publication date: October 4, 2018
    Applicant: Protostar, Inc., a Delaware Corporation
    Inventors: Peter James Fellingham, Yichuan Pan, David A Purcell, Nebojsa Sataric
  • Patent number: 10085909
    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: January 25, 2017
    Date of Patent: October 2, 2018
    Assignee: Protostar, Inc., a Delaware Corporation
    Inventors: Peter James Fellingham, Yichuan Pan, David A Purcell, Nebojsa Sataric
  • Publication number: 20170319424
    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: January 25, 2017
    Publication date: November 9, 2017
    Applicant: Protostar, Inc., a Delaware Corporation
    Inventors: Peter James Fellingham, Yichuan Pan, David A Purcell, Nebojsa Sataric
  • Publication number: 20170258664
    Abstract: An upright wheeled walker with bilateral stabilizing wheel suspensions, and an automatic braking system integrated with obstacle avoidance systems, terrain sensors and user feedback controls. The walker provides user upper body weight support in a wheeled walker with a user safety system including a plurality of sensor, processor and control elements and an automatic braking system for avoiding unseen obstacles and automatic speed limiting on inclines.
    Type: Application
    Filed: January 26, 2017
    Publication date: September 14, 2017
    Applicant: Protostar, Inc., a Delaware Corporation
    Inventor: David A. Purcell
  • Patent number: 9585807
    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: May 6, 2016
    Date of Patent: March 7, 2017
    Assignee: Protostar, Inc., a Delaware Corporation
    Inventors: Peter James Fellingham, Yichuan Pan, David A Purcell, Nebojsa Sataric
  • Publication number: 20170046723
    Abstract: A server implemented method and system for providing merchants with customer information by receiving customer profile data from a social network onto which a customer has logged-in using a customer's device over a network, storing the customer profile data in a storage device, generating reward data for products or services offered by merchants, the respective reward data identifying the merchants offering the respective reward, transmitting the reward data over the network to a customer's device, receiving a customer's selection of reward data for a product or service from the customer's device, receiving a message related to the product or service associated with the selected reward data from the customer's device and forwarding the message to the social network over the network for posting on the social network, storing data indicating the selection of the reward to be redeemed at the merchant by the customer; and transmitting information on the selected reward data and the stored customer profile data to
    Type: Application
    Filed: August 12, 2016
    Publication date: February 16, 2017
    Inventors: Joseph David Purcell, Stephen Daniel Hughes
  • Publication number: 20160331626
    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: May 6, 2016
    Publication date: November 17, 2016
    Applicant: Protostar, Inc., a Delaware Corporation
    Inventors: Peter James Fellingham, Yichuan Pan, David A. Purcell, Nebojsa Sataric
  • Patent number: 8987626
    Abstract: A stacking assembly is operative to protect stacked mailpieces from damage due to abrasion. The stacking assembly includes a support blade moveably mounted to a bin for accepting a stack of mailpieces and an ingestion assembly including a Leading Edge (LE) urge roller and Trailing Edge (TE) alignment device. The LE urge roller is operative to accept mailpieces from a supply of mailpieces, and urge a leading edge portion thereof toward a sidewall of the stacking bin. The TE alignment device includes a first cam driven about an axis of rotation by a digital rotary positioning device which cam defines a surface operative to urge the trailing edge portion of each mailpiece into parallel alignment with the support blade. The stacking assembly also includes an anti-abrasion linkage responsive to rotation of the digital rotary positioning device to forcibly displace a surface of the stacked mailpieces away from a moving surface of the ingestion assembly.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: March 24, 2015
    Assignee: Pitney Bowes Inc.
    Inventors: Robert J. Allen, Thomas M Lyga, David Purcell, Brad A Swinford
  • Patent number: 8748769
    Abstract: A divert assembly is described for a mailpiece sorter operative to sort mailpieces into one of a plurality of sortation bins. The divert assembly comprising a re-direct mechanism for selectively re-directing mailpieces travelling along a feed path into the sortation bin and causing each selected mailpiece to be re-directed at an angle relative to the stack of mailpieces to be accumulated in the sortation bin. The divert assembly also including a stacking assembly including a Leading Edge (LE) urge roller, a support blade, and a Trailing Edge (TE) alignment device. The LE urge roller accepts and urges each of the selected mailpieces toward a sidewall of the sortation bin while the support blade holds each of the selected mailpieces between the urge roller and the support blade and in an on-edge parallel relationship relative thereto. The support blade is moveably mounted relative to the LE urge roller to allow the accumulation of additional mailpieces between the LE urge roller and the support blade.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: June 10, 2014
    Assignee: Pitney Bowes Inc.
    Inventors: Robert J. Allen, Thomas M. Lyga, David Purcell, Brad A. Swinford
  • Publication number: 20140110312
    Abstract: A divert assembly is described for a mailpiece sorter operative to sort mailpieces into one of a plurality of sortation bins. The divert assembly comprising a re-direct mechanism for selectively re-directing mailpieces travelling along a feed path into the sortation bin and causing each selected mailpiece to be re-directed at an angle relative to the stack of mailpieces to be accumulated in the sortation bin. The divert assembly also including a stacking assembly including a Leading Edge (LE) urge roller, a support blade, and a Trailing Edge (TE) alignment device. The LE urge roller accepts and urges each of the selected mailpieces toward a sidewall of the sortation bin while the support blade holds each of the selected mailpieces between the urge roller and the support blade and in an on-edge parallel relationship relative thereto. The support blade is moveably mounted relative to the LE urge roller to allow the accumulation of additional mailpieces between the LE urge roller and the support blade.
    Type: Application
    Filed: October 24, 2012
    Publication date: April 24, 2014
    Applicant: PITNEY BOWES INC.
    Inventors: Robert J. Allen, Thomas M. Lyga, David Purcell, Brad A. Swinford
  • Publication number: 20140110313
    Abstract: A stacking assembly is operative to protect stacked mailpieces from damage due to abrasion. The stacking assembly includes a support blade moveably mounted to a bin for accepting a stack of mailpieces and an ingestion assembly including a Leading Edge (LE) urge roller and Trailing Edge (TE) alignment device. The LE urge roller is operative to accept mailpieces from a supply of mailpieces, and urge a leading edge portion thereof toward a sidewall of the stacking bin. The TE alignment device includes a first cam driven about an axis of rotation by a digital rotary positioning device which cam defines a surface operative to urge the trailing edge portion of each mailpiece into parallel alignment with the support blade. The stacking assembly also includes an anti-abrasion linkage responsive to rotation of the digital rotary positioning device to forcibly displace a surface of the stacked mailpieces away from a moving surface of the ingestion assembly.
    Type: Application
    Filed: October 24, 2012
    Publication date: April 24, 2014
    Applicant: Pitney Bowes, Inc.
    Inventors: Robert J. Allen, Thomas M. Lyga, David Purcell, Brad A. Swinford