Restraint edge for paving members
Patent 4863307 Issued on September 5, 1989. Estimated Expiration Date: 
June 29, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 29, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.InventorApplicationNo. 07/213303 filed on 06/29/1988US Classes:404/7, Curb404/8With rim or edge protectorExaminersPrimary: Massie, Jerome W.Assistant: Spahn, Gay Ann Attorney, Agent or FirmInternational ClassesE01C 11/00 (20060101)E01C 11/22 (20060101) AbstractLandscaping support apparatus is provided which includes substantially vertical strip restraining elements for defining a boundary around hard surface elements. The vertical strip restraining elements include an inner surface facing toward the hard surface elements for receiving substantially horizontal forces from the hard surface elements. Horizontal extension elements are provided which extend out from an outer surface of the vertical strip restraining elements in at least the lower region of the upright strip restraining elements for receiving vertical forces relative to the ground surface. Force converting elements are provided for converting the horizontal forces received by the vertical strip restraining elements into vertical forces against the horizontal extension elements, thereby restraining the hard surface elements in the boundary. Attaching elements are provided which permit a detachable mounting of at least one of the horizontal extension elements and the force converting elements to the vertical strip restraining elements. | |
