Pipe joints or couplings – Essential catch – Leaf spring
Patent
1989-02-27
1990-08-07
Reese, Randolph A.
Pipe joints or couplings
Essential catch
Leaf spring
285351, 285 82, 285 39, 285 93, 285174, F16L 3900
Patent
active
049462059
ABSTRACT:
A connector for connecting a small diameter pipe is disclosed, the arrangement being such that: a joint body formed with an insertion bore for a pipe has large, intermediate and small diameter portions; a seal ring is attached to the intermediate diameter portion; and a holder including a pair of elastic stoppers is set in an opening formed in the large diameter portion, the stoppers engaging with a swelling wall shaped on the pipe circumference, thus positioning the pipe and preventing its removal. The connector further includes a confirmative member which is stopped in the opening when the pipe is in the proper connecting position to the joint body. The confirmative member comprises a securing wall provided at the tips with stopping pawls and having a pair of arms. The confirmative member is disengaged from the opening on the basis of a positional correlation between the swelling wall or elastic stoppers and the securing wall when the pipe is properly installed. Whereas in an ill-installed state, the engagement of confirmative member can not be released.
REFERENCES:
patent: 2892991 (1959-06-01), Beebee
patent: 3453005 (1969-07-01), Foults
patent: 3826523 (1974-07-01), Eschbaugh
patent: 4035005 (1977-07-01), Devincent
patent: 4637636 (1987-01-01), Guest
patent: 4681351 (1987-07-01), Bartholomew
patent: 4730856 (1988-03-01), Washizu
patent: 4778203 (1988-10-01), Bartholomew
patent: 4781400 (1988-11-01), Cunningham
patent: 4793637 (1988-12-01), Laipply
Bordas Carol I.
Casella Anthony J.
Hespos Gerald E.
Reese Randolph A.
Usui Kokusai Sangyo Kaisha Ltd.
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