Patents by Inventor Eric J. Opitz

Eric J. Opitz 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: 4411284
    Abstract: There is provided an improvement in the art of walking aid tip assemblies of the type that support an individual and provide assistance in ambulation or movement across ground surfaces of various conditions. This improvement includes the use of a spiked gripper member secured on the groundward end of the walking aid, a sleeve slidably and rotationally secured on the groundward end of the walking aid and selectively moveable relative thereto, and a flexible foot secured to the sleeve and engageable with the ground and having a series of annular grooves in the ground engaging surface thereof, the sleeve and foot being moveable axially relative to the gripper member to expose the gripper member to the ground in one position of operation, to separate the gripper member from the ground in another position of operation, and to expose both the gripper member and the foot to the ground in an intermediate position of operation.
    Type: Grant
    Filed: November 19, 1981
    Date of Patent: October 25, 1983
    Inventor: Eric J. Opitz