Pipe joints or couplings – With lubrication
Patent
1978-01-03
1981-12-15
Callaghan, Thomas F.
Pipe joints or couplings
With lubrication
285112, 285272, 285373, 285383, F16L 2700
Patent
active
043056075
ABSTRACT:
A swivel coupling apparatus includes a pair of aligned metal pipe sections having grooved outer ends for connecting to hoses and rigid pipes by releasable clamp units. A gasket is disposed between the smooth end faces and an outer clamp housing encircles the end portions to mechanically connect the pipe sections. The pipe sections have outer shoulders with inclined clamp walls. The clamp housing includes a pair of semi-circular members having bolt clamping lugs for drawing the members onto the shoulders. The members having outer side clamp legs defining a cavity. A central rectangular spacer projects partially into the cavity for location between the outer portion of the end faces. The cavity has annular base walls between the spacer and side legs aligned with and outwardly spaced from the outer peripheral walls of the shoulders. Grease fittings to the opposite sides of the spacer provide for introducing of grease into the free space. The spacer has a smooth inner wall forming a backing for the gasket. The ring gasket is formed with a rectangular outer body and inner flared side lips with a curved base wall on the inner face to define a pressure chamber. The pumped concrete moves into the chamber and acts on the side lips to increase the sealing effect of the gasket.
REFERENCES:
patent: 2188314 (1940-01-01), Scheffauer
patent: 2295510 (1942-09-01), Ball et al.
patent: 2341449 (1944-02-01), Krone et al.
patent: 2575938 (1951-11-01), Brenneke
patent: 2962305 (1960-11-01), McCarthy et al.
patent: 3705737 (1972-12-01), Westerlund et al.
patent: 3967837 (1976-07-01), Westerlund et al.
Read Wayne L.
Westerlund Robert E.
Callaghan Thomas F.
Construction Forms, Inc.
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