Patents by Inventor Ethan Rand

Ethan Rand 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).

  • Ergonomic wheelchair propulsion system
    Patent number: 8109529
    Abstract: The present application pertains to a wheelchair having a frame; a seat attached to the frame and supporting a user; two lateral drive wheels mounted on essentially horizontal axes; and a propulsion system including a handle, an operating lever supporting said handle and having a friction element mounted onto the operating lever. The operating lever is movable axially with respect to one axis between a first and second position and radially. The friction element is arranged and constructed to frictionally engage said drive wheel in the first position and radial movement of the propulsion system propels the chair in a predetermined direction.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: February 7, 2012
    Inventors: Ethan Rand, Robert Koffsky
  • ERGONOMIC WHEELCHAIR PROPULSION SYSTEM
    Publication number: 20100320719
    Abstract: The present application pertains to a wheelchair having a frame; a seat attached to the frame and supporting a user; two lateral drive wheels mounted on essentially horizontal axes; and a propulsion system including a handle, an operating lever supporting said handle and having a friction element mounted onto the operating lever. The operating lever is movable axially with respect to one axis between a first and second position and radially. The friction element is arranged and constructed to frictionally engage said drive wheel in the first position and radial movement of the propulsion system propels the chair in a predetermined direction.
    Type: Application
    Filed: December 15, 2009
    Publication date: December 23, 2010
    Inventors: Ethan RAND, Robert Koffsky
  • ERGONOMIC WHEELCHAIR PROPULSION SYSTEM
    Publication number: 20070024021
    Abstract: The present application pertains to a wheelchair having a frame; a seat attached to the frame and supporting a user; two lateral drive wheels mounted on essentially horizontal axes; and a propulsion system including a handle, an operating lever supporting said handle and having a friction element mounted onto the operating lever. The operating lever is movable axially with respect to one axis between a first and second position and radially. The friction element is arranged and constructed to frictionally engage said drive wheel in the first position and radial movement of the propulsion system propels the chair in a predetermined direction.
    Type: Application
    Filed: July 31, 2006
    Publication date: February 1, 2007
    Inventors: Ethan RAND, Robert Koffsky