Patents by Inventor Martin John colenutt

Martin John colenutt 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).

  • Over-speed detection device for stairlifts
    Patent number: 10479649
    Abstract: An over-speed detection device (OSDD) and over-speed governor (OSG) for a stairlift is tripped by flyweights which displace from a rotational axis of the OSDD/OSG when subjected to an over-speed. The outward displacement of the flyweights is converted into an axial displacement to effect triggering of the OSG. This ensures that the tripping speed is independent of the angle if inclination of the stairlift rail. The OSDD/OSG may be mounted so that it takes its drive from a convex surface of the rail in negative transition bends. This ensures that the speed of the OSDD/OSG is maintained close to the tripping speed even when the carriage is slowed to traverse the negative transition bend.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: November 19, 2019
    Assignee: Stannah Stairlifts Limited
    Inventor: Martin John Colenutt
  • IMPROVEMENTS IN OR RELATING TO STAIRLIFTS
    Publication number: 20170144860
    Abstract: The invention provides an over-speed detection device (OSDD) and over-speed governor (OSG) for a stairlift, the OSDD/OSG being tripped by flyweights which displace from the rotational axis of the OSDD/OSG when subjected to over-speed. The outward displacement of the flyweights is converted into an axial displacement to effect triggering of the OSG. This ensures that the tripping speed is independent of the angle of inclination of the stairlift rail. A number of other features are described including mounting the OSDD/OSG so that it takes its drive from a convex surface of the rail in negative transition bends.
    Type: Application
    Filed: June 15, 2015
    Publication date: May 25, 2017
    Applicant: Stannah Stairlifts Limited
    Inventor: Martin John Colenutt
  • In or relating to stairlifts
    Patent number: 8607936
    Abstract: A roller arrangement (20) for a stairlift carriage is described, the arrangement including a central roller set (22), and outer roller sets (24) and (26). Rollers (42), (43, 44) and (45) in the outer roller sets are mounted in yokes (48) which are mounted for independent pivotal movement, relative to one another, in two orthogonal axes. The axes of each set preferably lie in common planes.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: December 17, 2013
    Assignee: Stannah Stairlifts Limited
    Inventors: Andreas Csaba Szentistvany, Martin John Colenutt
  • IMPROVEMENTS IN OR RELATING TO STAIRLIFTS
    Publication number: 20100101894
    Abstract: A roller arrangement (20) for a stairlift carriage is described, the arrangement including a central roller set (22), and outer roller sets (24) and (26). Rollers (42), (43, 44) and (45) in the outer roller sets are mounted in yokes (48) which are mounted for independent pivotal movement, relative to one another, in two orthogonal axes. The axes of each set preferably lie in common planes.
    Type: Application
    Filed: October 17, 2007
    Publication date: April 29, 2010
    Applicant: STANNAH STAIRLIFTS LIMITED
    Inventors: Andreas Csaba Szentistvany, Martin John colenutt