Patents by Inventor Erwin Wall

Erwin Wall 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: 8303006
    Abstract: An apparatus for gripping and lifting objects such as construction castings has a T-shaped frame comprising elongate horizontal and vertical frame members. The vertical frame member is slidably received in one end of a hollow sleeve member which is connected to its upper end to a loop or hook. A pair of articulated pivot arms are each connected at one end to the hollow sleeve member and at the other end to the horizontal frame member, with a joint being provided between the ends of each pivot arm. Carried at the ends of the horizontal frame member are a plurality of contact members which are adapted to contact and grip the sidewall of a construction casting. In use, the apparatus is placed over a construction casting with the horizontal frame member resting on the upper surface and with the contact elements in position facing the side wall of the casting. The apparatus is then lifted, for example by a backhoe or loader, which causes the sleeve member to slide upwardly along the vertical frame member.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: November 6, 2012
    Inventor: Erwin Wall
  • Publication number: 20120098285
    Abstract: An apparatus for gripping and lifting objects such as construction castings has a T-shaped frame comprising elongate horizontal and vertical frame members. The vertical frame member is slidably received in one end of a hollow sleeve member which is connected to its upper end to a lifting means such as a loop or hook. A pair of articulated pivot arms are each connected at one end to the hollow sleeve member and at the other end to the horizontal frame member, with a joint being provided between the ends of each pivot arm. Carried at the ends of the horizontal frame member are a plurality of contact members which are adapted to contact and grip the sidewall of a construction casting. In use, the apparatus is placed over a construction casting with the horizontal frame member resting on the upper surface and with the contact elements in position facing the side wall of the casting.
    Type: Application
    Filed: December 1, 2010
    Publication date: April 26, 2012
    Inventor: Erwin Wall