Patents by Inventor Thomas Francis McGrath

Thomas Francis McGrath 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: 7025072
    Abstract: Walking aid apparatus comprises handle portion and a shaft portion including a ground-contacting ferrule, the shaft portion comprising telescopically-mounted cylindrical spindle and sleeve elements and a spring means acting between seats of said spindle and sleeve elements resiliently to restrain relative axial sliding movement, in which the apparatus includes a sliding friction-reducing means between at least one end of the spring means and the associated seat, whereby the handle portion and the ferrule are axially rotatable to accommodate twisting movement as between the user and the ground in use. The sliding friction-reducing means results in controlled rotation as between the spring means and the spindle and/or elements with considerable benefits to the user in avoiding tortional loading to the twist, elbow and/or shoulder joints which can be especially painful to those who suffer from arthritis.
    Type: Grant
    Filed: November 6, 2001
    Date of Patent: April 11, 2006
    Inventor: Thomas Francis McGrath
  • Publication number: 20040035453
    Abstract: Walking aid apparatus comprises handle portion and a shaft portion including a ground-contacting ferrule, the shaft portion comprising telescopically-mounted cylindrical spindle and sleeve elements and a spring means acting between seats of said spindle and sleeve elements resiliently to restrain relative axial sliding movement, in which the apparatus includes a sliding friction-reducing means between at least one end of the spring means and the associated seat, whereby the handle portion and the ferrule are axially rotatable to accommodate twisting movement as between the user and the ground in use. The sliding friction-reducing means results in controlled rotation as between the spring means and the spindle and/or elements with considerable benefits to the user in avoiding tortional loading to the twist, elbow and/or shoulder joints which can be especially painful to those who suffer from arthritis.
    Type: Application
    Filed: May 5, 2003
    Publication date: February 26, 2004
    Inventor: Thomas Francis McGrath
  • Publication number: 20010027802
    Abstract: A walking aid comprises a shaft and a foot assembly, in which the foot assembly includes in combination a sleeve member and a foot member adapted for relative axial sliding movement and including resilient movement-restraint means, the sleeve member being adapted for attachment to the shaft and including grip means for inhibiting or preventing removal from the shaft once attached thereto.
    Type: Application
    Filed: February 24, 2001
    Publication date: October 11, 2001
    Inventor: Thomas Francis McGrath