Plug cock

• US 4,140,149 A
• Filed: 03/02/1977
• Issued: 02/20/1979
• Est. Priority Date: 03/12/1976
• Status: Expired due to Term

• Current Assignee: Constructions Metalliques de Provence
• Original Assignee: Constructions Metalliques de Provence
• Inventors: Mommeja, Patrick F., Laignel, Raymond A.
• Primary Examiner(s): Cline, William R.
• Assistant Examiner(s): Spiegel, H. Jay
• Application Number:
  US05/773,488
• Time in Patent Office: 720 Days
• Field of Search: 251/315, 251/298, 251/304, 251/309, 251/367, 137/559, 137/329.01, 137/584
• US Class Current: 137/329.01
• CPC Class Codes: F16K 5/0407 with particular plug arrangements, e.g. particular shape or built-in means
• CPC Class Codes: F16K 5/0492 Easy mounting or dismounting means
• CPC Class Codes: F16K 5/0605 with particular plug arrangements, e.g. particular shape or built-in means
• CPC Class Codes: F16K 5/0626 Easy mounting or dismounting means
• CPC Class Codes: Y10T 137/6164 Valve heads and/or seats
• CPC Class Codes: Y10T 137/8359 Inspection means
• CPC Class Codes: Y10T 137/863 Access and outlet

Abstract

Plug cock equipped with a rotating plug, which comprises a cylindrical body pivoting about an axis perpendicular to the axis of the cylinder and through which passes a conduit for the passage of fluid, which body comprises, at least one of its two axial ends, a portion of sphere; the body of the plug cock according to the invention comprises a side opening, located in a plane parallel to the axis of rotation and to the axis of the conduit, the diameter of which is slightly larger than the diameter of the cylindrical body of the plug.

Claims

1. In a plug cock comprising a body and a plug rotating inside said body, said plug being composed of a cylindrical body having an axis YO-Y1 and two opposite axial ends, which body pivots about the axis ZO-Z1 perpendicular to axis YO-Y1, a conduit for the passage of fluid passing through said body and whose direction is perpendicular to the axes YO-Y1 and ZO-Z1, which body is extended, at at least one of its two axial ends, by a spherical portion of revolution about the axis YO-Y1 of said cylindrical body;

said plug being composed of a cylindrical body extended at each of its two axial ends by a segment of a sphere both centered at point O of intersection of the axes YO-Y1 and ZO-Z1 and a bore passing therethrough whose diameter is smaller than the diameter of said cylindrical body and the axis of which is perpendicular to axes YO-Y1 and ZO-Z1;

said cylindrical body comprising two diametrically opposite housings and said plug comprising two aligned cylindrical pivots which define the pivot axis ZO-Z1 of the plug and each of said pivots being fixed at one of its ends to one of said housings;

said body including two aligned bearings in which said plug pivots swivel;

at least two diametrically opposite terminals which define the axis XO-X1 of a pipe connected to said cock; and

a circular side opening located in a plane parallel to axes ZO-Z1 and XO-X1, which opening is reinforced by a cylindrical ring welded to the body and is obturated by a removable cover and the external diameter of the cover, which is slightly smaller than the internal diameter of the ring, is larger than the diameter of the cylindrical body of the plug, so that the plug is dismountable through said opening; and

wherein the spherical ends of the plug comprise two concentric grooves each containing a gasket and the body comprises seats centered on the axis XO-X1 of the pipe and a seat coaxial with said opening, the outer gaskets, located nearest the ends, cooperate with said seats when the cock is closed, whilst one of the inner gaskets cooperate with the seat when the plug is in open position, so that, in this position it is possible to inspect and replace the outer gaskets without cutting off the circulation of fluid.