Pipe-handling apparatus
Patent 4053973 Issued on October 18, 1977. Estimated Expiration Date: 
October 18, 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 18, 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 2615413 3233315 3387761 3633813 InventorsAssigneeApplicationNo. 05/670653 filed on 03/26/1976US Classes:29/252, Having fluid operator228/44.5Comprising tube aligning meansExaminersPrimary: Jones, James L. Jr.Attorney, Agent or FirmInternational ClassB23K 37/053 (20060101)Foreign Application Priority Data1975-03-28 ITAbstractAn apparatus or "coupler" for use in welding two lengths of pipe to be butt-welded, particularly suitable for welding a section of pipe to the end of a pipeline section being laid on the sea bottom, comprising an elongate body having a first portion and a second portion, which can be attached to respective pipes by means of respective attachment means and sliding means cooperating with the attachment means in order to move the first and second pipes towards each other, whereby, during the welding, not only the two pipes on internally changed to the said portions with their axes aligned, but are also drawn and held together, even when one of the pipes undergoes a longitudinal reciprocating movement.Field of SearchPuller or pusher means, contained force multiplying operator | |
