Paving block
Patent 4711599 Issued on December 8, 1987. Estimated Expiration Date: 
November 20, 2005. 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.
November 20, 2005. 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 ReferencesInventorAssigneeApplicationNo. 06/805475 filed on 11/20/1985US Classes:404/41, Interfitting404/42, PatternedD25/113Construction block or brick type (20)ExaminersPrimary: Novosad, Stephen J.Assistant: Smith, Matthew Attorney, Agent or FirmInternational ClassE01C 5/00 (20060101)Foreign Application Priority Data1984-03-29 GBAbstractA paving block has six sides, and a top (10) and a bottom surface (12). Two of the side surfaces (14, 16) are substantially parallel and substantially twice as long as each of the other four side surfaces (18, 20, 22, 24), two surfaces (18, 20) of the said other four side surfaces each making an angle of substantially 120° with one end of each of the longer side surfaces (14, 16) and each other side surface (22, 24) making an angle of substantially 60° with the other end of each of the longer side surfaces (14, 16). In other words, a block according to the invention as seen in plan is of `chevron` shape a shape that could also be termed a squat `V` shape. This is a simple, easily manufactured block, which permits numerous different arrangements to be laid. | |
