Pipe joints or couplings – With assembly means or feature – Guide and support
Patent
1994-10-12
1996-01-30
Arola, Dave W.
Pipe joints or couplings
With assembly means or feature
Guide and support
285 38, 285 61, 285155, 285342, 285357, 285911, 29428, F16L 3500
Patent
active
054875692
ABSTRACT:
An easily-assembled, heat resistant connector for releasably joining end portions of three capillary tubes for use in chromatography without interrupting flow or interfering with chromatographic results comprises a main body, and a glass insert which has first, second and third hollow legs that are connected together at a central portion, and a connector that connects each leg of the glass insert to a capillary tube. Each leg of the glass insert extends outwardly from the central portion towards an open end portion, and each leg has an inboard bore with a taper that receives and end portion of one of the capillary tubes. The taper is wider near the open end portion of the leg and narrower near the central portion. The connectors are mounted on the main body and a sealing ferrule is provided in each connector for making a seal between the capillary tubes and the legs of the glass insert. An adjusting screw in each connector provides for independently adjusting the pressure against each of the sealing ferrules to insure that an efficient seal is made between each capillary tube and a leg of the glass insert.
REFERENCES:
patent: 4529230 (1985-07-01), Fatula
patent: 4621841 (1986-11-01), Wakefield
patent: 4690437 (1987-09-01), Anderson
patent: 4997213 (1991-03-01), Traner et al.
patent: 5234235 (1993-08-01), Worden
patent: 5288113 (1994-02-01), Silvis et al.
patent: 5303553 (1994-04-01), Ollivaud et al.
Rightnour Bradley R.
Silvis Paul H.
A. Earley John F.
A. Earley III John F.
Arola Dave W.
Restek Corporation
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