Patents by Inventor Max Daniel Woodhams

Max Daniel Woodhams 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).

  • A STAIRLIFT
    Publication number: 20230278830
    Abstract: A stairlift has a load carrier, or chair, which can be levelled in both roll and pitch. Two level drive motors are provided which engage with a levelling wheel centred on the roll axis and when the level drive motors are driven in the same direction, the load carrier is driven about the roll axis. A linkage connects the level drive motors with the load carrier and is configured such that, when the level drive motors are driven in opposite directions, movement of the load carrier about the pitch axis is induced.
    Type: Application
    Filed: September 6, 2021
    Publication date: September 7, 2023
    Inventor: Max Daniel Woodhams
  • IMPROVEMENTS IN OR RELATING TO STAIRLIFTS
    Publication number: 20230249944
    Abstract: A friction drive stairlift has a pair of drive wheels in frictional engagement with an upper surface of a stairlift rail. The drive wheels are mounted to rotate in a vertical plane passing through the centreline of the stairlift rail. The rail is preferably formed from two substantially parallel tubes and the carriage is maintained perpendicular to that part of the rail with which it is in contact at any particular time.
    Type: Application
    Filed: June 29, 2021
    Publication date: August 10, 2023
    Inventors: Max Daniel Woodhams, Andreas Csaba Szentistvany
  • Stairlifts
    Patent number: 11261060
    Abstract: A mechanically-based arrangement for locking a stairlift chair relative to a stairlift carriage in the event of a failure within the drive that is provided to maintain the chair level as the stairlift is in operation. The arrangement uses inter-engaging components that are engaged and dis-engaged in timed relationship to rotation of the levelling motor. At all times at least one set of inter-engaging components are engaged.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: March 1, 2022
    Assignee: Stannah Stairlifts Limited
    Inventor: Max Daniel Woodhams
  • IMPROVEMENTS IN OR RELATING TO STAIRLIFTS
    Publication number: 20210130133
    Abstract: A mechanically-based arrangement for locking a stairlift chair relative to a stairlift carriage in the event of a failure within the drive that is provided to maintain the chair level as the stairlift is in operation. The arrangement uses inter-engaging components that are engaged and dis-engaged in timed relationship to rotation of the levelling motor. At all times at least one set of inter-engaging components are engaged.
    Type: Application
    Filed: July 30, 2018
    Publication date: May 6, 2021
    Inventor: Max Daniel Woodhams
  • Stairlifts
    Patent number: 10836607
    Abstract: A stairlift rail is configured to cause a stairlift carriage and chair to rotate a small amount in a downhill direction adjacent to the lower end of the rail, thus avoiding a clash between the chair and the staircase.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: November 17, 2020
    Assignee: Stannah Stairlifts Limited
    Inventor: Max Daniel Woodhams
  • IMPROVEMENTS IN OR RELATED TO STAIRLIFTS
    Publication number: 20190112157
    Abstract: A stairlift rail is configured to cause a stairlift carriage and chair to rotate a small amount in a downhill direction adjacent to the lower end of the rail, thus avoiding a clash between the chair and the staircase.
    Type: Application
    Filed: April 25, 2017
    Publication date: April 18, 2019
    Applicant: Stannah Stairlifts Limited
    Inventor: Max Daniel Woodhams
  • Stairlifts
    Patent number: 9758348
    Abstract: A stairlift and/or a method of supporting a user on a stairlift in which the seat is configured to positively retain the user and in which the seat-to-footrest height is set so as to reduce flexure of the knee joints as well as to reduce the intrusion of the passenger into the stairway.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: September 12, 2017
    Assignee: Stannah Stairlifts Limited
    Inventor: Max Daniel Woodhams
  • STAIRLIFTS
    Publication number: 20140332320
    Abstract: A stairlift and/or a method of supporting a user on a stairlift in which the seat is configured to positively retain the user and in which the seat-to-footrest height is set so as to reduce flexure of the knee joints as well as to reduce the intrusion of the passenger into the stairway.
    Type: Application
    Filed: November 26, 2012
    Publication date: November 13, 2014
    Inventor: Max Daniel Woodhams
  • STAIRLIFTS
    Publication number: 20110088977
    Abstract: The present invention enhances the safety of a stairlift by providing a movement sensor (46) to detect movement of the stairlift chair, such movement being deemed to indicate that a user is attempting to occupy or leave the chair. Upon detection of such movement, the stairlift hand control (38), and remote call controls (22, 24) are rendered inoperative. A chair occupancy sensor (40) may also be provided to restore power to the hand control (38) when the user is safely seated within the chair.
    Type: Application
    Filed: June 5, 2009
    Publication date: April 21, 2011
    Applicant: Stannah Stairllifts Limited
    Inventor: Max Daniel Woodhams