Joint for tubings

Details Joint for tubings Joint for tubings

2005-12-06

2005-12-06

Hewitt, James M. (Department: 3679)

Pipe joints or couplings

Nonmetal to metal

Internal member

C285S354000, C285S334500, C285S386000, C285S089000

Reexamination Certificate

active

06971683

ABSTRACT:
A joint for tubings with which, in tightening the nut member (20), the friction torque applied to the first end face (32) of the control ring (30) by the bore peripheral face (25) of the internally threaded bore (21) of the nut member (20) is greater than the friction torque applied to the second end face (34) of the control ring (30) by the stopper portion (17) of the joint main body (10, and thus the nut member (20) is reliably turned together with the control ring (30) at the final stage of tightening the nut member (200, which allows the proper initial tightening position of the nut member (20) to be determined.

REFERENCES:
patent: 904673 (1908-11-01), Bideker
patent: 1774841 (1930-09-01), Parker
patent: 1894700 (1933-01-01), Parker
patent: 2863678 (1958-12-01), Gordon et al.
patent: 6022053 (2000-02-01), Hukuda
patent: 6142535 (2000-11-01), Nishio et al.
patent: 6334632 (2002-01-01), Nishio et al.
patent: 6776440 (2004-08-01), Nishio
patent: 1-316591 (1989-12-01), None
patent: 6-129576 (1994-05-01), None
patent: 6-159574 (1994-06-01), None
patent: 07-243564 (1995-09-01), None

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