Method and apparatus for manufacturing a helically finned heat exchanger
Patent 4051586 Issued on October 4, 1977. Estimated Expiration Date: 
October 4, 1994. 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.
October 4, 1994. 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 References 2553142 3022049 InventorAssigneeApplicationNo. 05/737833 filed on 11/01/1976US Classes:29/890.048, Helically finned156/269, Of continuous or running length bonded web29/417, Dividing sequentially from leading end, e.g., by cutting or breaking29/726, Heat exchanger29/727Including deforming meansExaminersPrimary: Lanham, C.W.Assistant: Rising, V. K. Attorney, Agent or FirmAbstractA method and apparatus is disclosed for the manufacture of a continuous heat exchanger tube including helically winding a spine fin material on the outer wall of a base tube member. A preselected portion of the spine fin material is secured against movement relative to the base tube member. The heat exchanger is then severed in the secured portion so that a section of the secured portion is arranged at each end of the severed heat exchanger. The secured severed end sections are effective in maintaining the intermediate portion of the spine fin material from unwinding and, as a result, in heat transfer relationship with the base tube member. | |
