Pipe connecting device

Pipe joints or couplings – With fluid pressure seal – With separate – encased pipe-gripping means

Reexamination Certificate

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Details

C285S003000, C285S382400, C285S334100, C285S357000

Reexamination Certificate

active

07032933

ABSTRACT:
A pipe connecting device designed for detachable, sealing assembly of two pipe ends which device consists of an outer part and an inner part inserted axially into the outer part and cooperating therewith for internal connection to the first pipe end. The cooperating contact surfaces of both the inner part and the outer part are conical in shaped. Furthermore, means are arranged to prevent axial movement between the conical contact surfaces.

REFERENCES:
patent: 922544 (1909-05-01), Turner et al.
patent: 2132636 (1938-10-01), Maahs
patent: 2813568 (1957-11-01), Kilmarx, Jr.
patent: 3058760 (1962-10-01), Bankowski
patent: 3340762 (1967-09-01), Bennett
patent: 3689038 (1972-09-01), Martin
patent: 3879065 (1975-04-01), Kobayashi
patent: 4627647 (1986-12-01), Hauff
patent: 4768560 (1988-09-01), Logsdon
patent: 6557825 (2003-05-01), Stone et al.
patent: 597771 (1929-10-01), None

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