Processing extruded elastomers
Patent 4247506 Issued on January 27, 1981. Estimated Expiration Date: 
May 19, 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.
May 19, 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 ReferencesInventorAssigneeApplicationNo. 05/907540 filed on 05/19/1978US Classes:264/177.16, Die configuration (other than fixed orifice shape)264/177.19, Temperature specified (other than ambient)264/178R, Into a liquid bath264/235, Annealing264/237CoolingExaminersPrimary: Woo, Jay H.Attorney, Agent or FirmInternational ClassesB29C 47/00 (20060101)B29C 47/88 (20060101) AbstractMethod and apparatus for processing extruded thermoplastic material for use in siding by advancing the extrudate from the die member through a series of baths which size and shape the extrudate. The process sizes and cools the extrudate, and, thence, heat treats the extrudate followed by a final quenching of the extrudate in its final shape and size. | |
