Tube fitting with variable tube insertion
Patent 5028078 Issued on July 2, 1991. Estimated Expiration Date: 
February 5, 2010. 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.
February 5, 2010. 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 2405489 2475026 2484815 3290064 InventorsAssigneeApplicationNo. 474878 filed on 02/05/1990US Classes:285/12, CONVERTIBLE285/39, Particular tool-engaging means or with tool285/382.7By separate deformable elementExaminersPrimary: Arola, Dave W.Attorney, Agent or FirmInternational ClassF16L 025/00AbstractA flareless fitting includes a coupling body, a coupling nut and a ferrule. A tube is inserted so that it may extend axially inwardly a variable insertion length beyond the ferrule, through the length of a counterbore which is slip fit about the tube. Tightening of the coupling nut and the tapered arrangement causes the ferrule to be sealed between the tube outer wall and the internal cylindrical surface of the coupling body. Specifically, a single tube fitting system is provided which offers substantial tube penetration, or shallow tube penetration, without using two different kinds of fittings. | |
