Valve flange retainment system

• US 4,991,881 A
• Filed: 07/10/1989
• Issued: 02/12/1991
• Est. Priority Date: 07/10/1989
• Status: Expired due to Fees

• Current Assignee: Fisher Controls International LLC (Emerson Electric Company)
• Original Assignee: Fisher Controls International LLC (Emerson Electric Company)
• Inventors: Davis, James R., Osgood, Melvin L.
• Primary Examiner(s): Arola, Dave W.
• Application Number:
  US07/378,405
• Time in Patent Office: 582 Days
• Field of Search: 285/404, 285/330, 285/419, 285/90, 285/87, 285/368, 285/412, 285/413, 285/414, 285/415, 403/356, 403/362, 403/375
• US Class Current: 285/330
• CPC Class Codes: F16L 23/0286 the shoulder not being formed from the pipe

Abstract

A separable flange retainment system includes a first boss on the flange and a mating second boss on a valve body. The boss on the valve body has a threaded aperture for reception of a suitable fastener. A generally U shaped retainer device having an orifice in its bight portion straddles the bosses and is secured in position by the fastener. The retainer device precludes lateral and rotational movement between the flange and the body.

Claims

1. In combination:

a pipeline device having a body defining a circumferential groove;

a split ring positioned in said groove;

a loosely mounted flange secured to said body by said split ring; and

removable means engaging both said flange and said body for securing said flange in position on said body, said removable means precluding both lateral and rotational movements between said body and said flange, said removable means capable of being loosely applied and still precluding said movements.

2. In combination:

a pipeline device having a body defining a circumferential groove;

a split ring positioned in said groove;

a loosely mounted flange secured to said body by said split ring;

removable means for securing said flange in position on said body, said securing means comprising a pair of matching bosses on said flange and said body, respectively; and

means for maintaining said bosses in alignment to preclude both lateral and rotational movement therebetween.

3. The combination of claim 2 wherein said maintaining means comprises a generally U-shaped retainer having an aperture therein;

a mating aperture formed in one of said bosses; and

a fastener mounted in said aperture and secured in said mating aperture.

4. A valve body having a flange loosely secured thereto, said flange being capable of relative rotational and limited lateral movement with respect to said valve body;

a first generally rectangular boss on said valve body;

a second generally rectangular mating boss on said flange, said bosses being juxtaposed each other in one orientation of said flange and said body;

a U-shaped retainer device, having a U-shaped cross-section throughout the extent thereof, straddling said first and second bosses and maintaining said flange and said body in said one orientation; and

fastener means for securing said retainer device in position.

5. The apparatus of claim 4 wherein said fastener means includes:

a threaded aperture formed in said first boss;

a hole formed in the bight portion of said U-shaped retainer device; and

a bolt passing through said hole and engaging said threaded aperture.