Collapsible barricade
Patent 4183695 Issued on January 15, 1980. Estimated Expiration Date: 
August 30, 1998. 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.
August 30, 1998. 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.Patent ReferencesInventorApplicationNo. 05/938065 filed on 08/30/1978US Classes:404/6, TRAFFIC STEERING DEVICE OR BARRIER116/63R, STREET TRAFFIC256/1, MISCELLANEOUS256/13.1, HIGHWAY GUARD40/606.15, Pivot (e.g., hinge)40/607.1, Base attached to post482/16Crossbar or support thereforExaminersPrimary: Byers, Nile C. Jr.Attorney, Agent or FirmInternational ClassesE01F 13/02 (20060101)E01F 9/018 (20060101) E01F 13/00 (20060101) E01F 9/011 (20060101) AbstractA plurality of signboards on a pair of legs are pivotally connected to a base and held in a vertical position by shear pins adapted to shear upon a predetermined impact force being directed against the signboards from either direction thereby allowing the legs to pivot to a collapsed horizontal position. | |
