Robert M Mozley

US Patent:

6431383, Aug 13, 2002

Filed:

Nov 28, 2000

Appl. No.:

09/723659

Inventors:

Robert M. Mozley - Raytown MO
James M. Shivers - Kansas City MO

Assignee:

Continental Disc Corporation - Liberty MO

International Classification:

B65D 2500

US Classification:

220 891, 220 892, 220 893, 137 6827, 137 69

Abstract:

An improved reverse rupture disc for use as a safety pressure relief device is provided. The disc is defined by an annular flat flange region, a concave-convex disc dome region and a transition region that joins the disc-shaped flat flange region to the concave-convex disc dome region. One or more deformations may be formed at or near the apex of the disc dome region for weakening the disc to the point that incidental damage to the disc will not weaken the disc any further, thereby ensuring that the disc will reverse at a certain pressure, and no lower. The disc may also formed with one or more irregular transition regions at the base of the disc and a partial circular groove in the transition region. The irregular transition region of the disc cooperates with a shear enhancing means such as a protrusion or notch formed in a support ring or disc holder disposed downstream of the disc to sever the disc dome from the annular flat flange region along the groove in the transition region. A back pressure support means extends over the transition region and potentially over the dome region to prevent vacuum and forward to reverse cyclical pressures in the convex direction from damaging or destroying the disc.

US Patent:

20100140238, Jun 10, 2010

Filed:

Mar 13, 2009

Appl. No.:

12/403828

Inventors:

Robert M. Mozley - Raytown MO, US
Gabriel Hernandez - Kansas City MO, US

Assignee:

CONTINENTAL DISC CORPORATION - Liberty MO

International Classification:

B23K 26/00

US Classification:

21912172

Abstract:

A method of forming a score line in a rupture disc using a laser is provided, wherein the method includes selecting a wavelength for the laser that maximizes absorption of the laser radiation by the disc material, selecting a pulse duration for the laser that maximizes a peak power of the laser, selecting a pulse repetition rate for the laser that reduces a heat affected zone of the rupture disc during ablation, and selecting the speed of relative motion between the laser and the rupture disc. The score line is ablated in the rupture disc using the laser to remove material from the rupture disc as vapor without melting or oxidizing disc material adjacent the material being removed.

US Patent:

46696261, Jun 2, 1987

Filed:

Sep 20, 1983

Appl. No.:

6/533982

Inventors:

Robert M. Mozley - Raytown MO

Assignee:

Continental Disc Corporation - Kansas City MO

International Classification:

F16K 1716
F16K 1740

US Classification:

220 89A

Abstract:

A rupture disc system comprises a rupture disc including a dome portion and a flange portion interconnected by a transition region and a mounting mechanism for mounting the rupture disc by the flange portion thereof in a pressure relieving vent. The rupture disc includes a thickness reducing groove at least partially circumferentially surrounding the dome portion and located in the transition region thereof. Preferably, the rupture disc is of the reverse buckling type and the groove does not completely surround the dome portion so as to define a tab or hinge within that part of the transition region which is ungrooved or not as deeply grooved as a remainder of the transition region. In addition, the slope or radius of curvature may be increased in the region of the tab. The rupture disc also includes an indentation on the dome portion.

US Patent:

62411136, Jun 5, 2001

Filed:

Mar 15, 1999

Appl. No.:

9/268413

Inventors:

Robert M. Mozley - Raytown MO
James M. Shivers - Kansas City MO

Assignee:

Continental Disc Corporation - Liberty MO

International Classification:

F16K 1300

US Classification:

220 891

Abstract:

An improved reverse rupture disc for use as a safety pressure relief device is provided. The disc is defined by an annular flat flange region, a concave-convex disc dome region and a transition region that joins the disc-shaped flat flange region to the concave-convex disc dome region. One or more deformations may be formed at or near the apex of the disc dome region for weakening the disc to the point that incidental damage to the disc will not weaken the disc any further, thereby ensuring that the disc will reverse at a certain pressure, and no lower. The disc may also formed with one or more irregular transition regions at the base of the disc and a partial circular groove in the transition region. The irregular transition region of the disc cooperates with a shear enhancing means such as a protrusion or notch formed in a support ring or disc holder disposed downstream of the disc to sever the disc dome from the annular flat flange region along the groove in the transition region. A back pressure support means extends over the transition region and potentially over the dome region to prevent vacuum and forward to reverse cyclical pressures in the convex direction from damaging or destroying the disc.

US Patent:

45121710, Apr 23, 1985

Filed:

Sep 20, 1983

Appl. No.:

6/533854

Inventors:

Robert M. Mozley - Raytown MO

Assignee:

Continental Disc Corporation - Kansas City MO

International Classification:

B21D 2200

US Classification:

72 55

Abstract:

A rupture disc system comprises a rupture disc including a dome portion and a flange portion interconnected by a transition region and a mounting mechanism for mounting the rupture disc by the flange portion thereof in a pressure relieving vent. The rupture disc includes a thickness reducing groove at least partially circumferentially surrounding the dome portion and located in the transition region thereof. Preferably, the rupture disc is of the reverse buckling type and the groove does not completely surround the dome portion so as to define a tab or hinge within that part of the transition region which is ungrooved or not as deeply grooved as a remainder of the transition region. In addition, the slope or radius of curvature may be increased in the region of the tab. The rupture disc also includes an indentation on the dome portion.

US Patent:

47594608, Jul 26, 1988

Filed:

Dec 22, 1986

Appl. No.:

6/946650

Inventors:

Robert M. Mozley - Raytown MO

Assignee:

Continental Disc Corporation - Kansas City MO

International Classification:

F16K 1716
F16K 1740

US Classification:

220 89A

Abstract:

A rupture disc system comprises a ruptue disc including a dome portion and a flange portion interconnected by a transition region and a mounting mechanism for mounting the rupture disc by the flange portion thereof in a pressure relieving vent. The rupture disc includes a thickness reducing groove at least partially circumferentially surrounding the dome portion and located in the transition region thereof. Preferably, the rupture disc is of the reverse buckling type and the groove does not completely surround the dome portion so as to define a tab or hinge within that part of the transition region which is ungrooved or not as deeply grooved as a remainder of the transition region. In addition, the slope or radius of curvature may be increased in the region of the tab. The rupture disc also includes an indentation on the dome portion.

US Patent:

60069384, Dec 28, 1999

Filed:

Sep 18, 1997

Appl. No.:

8/933281

Inventors:

Robert M. Mozley - Raytown MO
J. Kyle McCamis - Liberty MO

Assignee:

Continental Disc Corporation - Liberty MO

International Classification:

F16K 1300

US Classification:

220 892

Abstract:

An improved reverse rupture disc for use as a safety pressure relief device is provided. The disc is defined by an annular flat flange region, a concave-convex disc dome region and a transition region that joins the disc-shaped flat flange region to the concave-convex disc dome region. One or more deformations are formed at or near the apex of the disc dome region for weakening the disc to the point that incidental damage to the disc will not weaken the disc any further, thereby ensuring that the disc will reverse at a certain pressure, and no lower. The disc is also formed with an irregular transition region at the base of the disc and a partial circular groove in the transition region. The irregular transition region of the disc cooperates with a protrusion formed in a support ring disposed downstream of the disc to sever the disc dome from the annular flat flange region along the groove in the transition region. An ungrooved region of the transition region acts as a hinge holding the ruptured disc dome to the flat flange region after the disc has ruptured.

US Patent:

45975051, Jul 1, 1986

Filed:

Apr 9, 1984

Appl. No.:

6/598457

Inventors:

Robert M. Mozley - Raytown MO
Bryce H. Wilson - Kansas City MO

Assignee:

Continental Disc Corporation - Kansas City MO

International Classification:

F16K 1716
F16K 1740

US Classification:

220 89A

Abstract:

A rupture disc system comprises a rupture disc including a dome portion and a flange portion interconnected by a transition region and a mounting mechanism for mounting the rupture disc by the flange portion thereof in a pressure relieving vent. The rupture disc includes a thickness reducing groove at least partially circumferentially surrounding the dome portion and located in the transition region thereof. The rupture disc is of the reverse buckling type and the groove does not completely surround the dome portion so as to define a tab or hinge within that part of the transition region which is ungrooved or not as deeply grooved as a remainder of the transition region. The system includes a support structure for the disc which supports the transition region except in a sector adjacent the dome portion where initial failure is desired. The location of the unsupported sector is approximately centered relative to the tab or hinge. In addition, the disc support structure preferably comprises a downstream ring member having an arcuate projection which extends into the vent.