Rupture disk
AssigneeOklahoma Safety Equipment Company, Inc.
InventorSudheer Khamitkar
Life of this patent
Estimating the term…
Abstract
A rupture disk is provided for relieving pressure between the interior of a battery box and the exterior of the battery box, the box having an outlet opening. A first layer provides a gasket which abuts the battery box, the gasket having a central opening which aligns with the battery box opening. A second layer is in the form of a reverse buckling disk having a disk flange, a domed portion and a weakened portion on the dome that defines a disk burst pressure, the second layer having concave and convex sides. A third layer that is an outlet ring that sandwiches the second layer in between the first and the third layer layers, the outlet ring having a central opening surrounded by an edge. A plurality of teeth on the third layer extend from said edge inwardly. A plurality of tabs are provided on the first and third layers.
Claims20
A rupture disk for relieving pressure between the interior of a box and the exterior of the box, the box having an outlet opening, comprising:
- a) a first layer that provides a gasket which abuts the box, the gasket having a central opening which aligns with the box opening;
- b) a second layer in the form of a reverse buckling disk having a disk flange, a domed portion and a weakened score on the dome that defines a disk burst pressure, the second layer having concave and convex sides;
- c) a third layer that is an outlet ring that sandwiches the second layer in between the first and the third layer layers, the outlet ring having a central opening surrounded by an edge;
- d) a plurality of regularly spaced apart and circumferentially extending teeth on the third layer extending from said edge inwardly a distance, each tooth having a circumferentially extending edge;
- e) a plurality of recesses, one recess in between each pair of said teeth;
- f) the combination of teeth and recesses extending completely around said third layer central opening;
- g) a plurality of tabs on the first and third layers, said tabs including circumferentially spaced apart tabs on each of said first and third layers, each tab having a tab opening, said tabs generally aligning so that a fastener can be passed through the tab openings of the first layer and the third layer;
- h) fasteners that affix the first and third layers to the box;
- i) wherein the second layer is generally circular and surrounded by the fasteners;
- and
- j) wherein circumferentially extending edge of each tooth is positioned on the concave side of the second layer and next to the score.
A rupture disk for relieving pressure between the interior of a battery box and the exterior of the battery box, the box having an outlet opening, comprising:
- a) a first layer that provides a gasket which abuts the battery box, the gasket having a central opening which aligns with the battery box opening;
- b) a second layer in the form of a reverse buckling disk having a disk flange, a domed portion and one or more scores on the domed portion that define a disk burst pressure, the second layer having concave and convex sides;
- c) a third layer that is an outlet ring that sandwiches the second layer in between the first and the third layer layers, the outlet ring having a central opening surrounded by an edge;
- d) a plurality of teeth on the third layer, each tooth extending from said edge inwardly a distance, each tooth having an innermost tooth edge that is positioned adjacent said score and that extends circumferentially along a part of the score;
- e) a plurality of recesses, one recess in between each pair of teeth;
- f) the combination of teeth and recesses surrounding said third layer central opening;
- g) a plurality of tabs on the first layer, said tabs including circumferentially spaced apart tabs, each tab having a tab opening;
- h) a plurality of tabs on the third layer, said tabs including circumferentially spaced apart tabs, each tab having a tab opening;
- i) fasteners that affix the first and third layers to the box, the fasteners being arranged generally in a circle to provide a fastener circle;
- j) wherein the second layer domed portion is positioned inside of the fastener circle, surrounded by the fasteners;
- and
- k) wherein the teeth are positioned on the concave side of the second layer.
A rupture disk for relieving pressure between the interior of a battery box and the exterior of the battery box, the box having an outlet opening, comprising:
- a) a first layer that provides a gasket which abuts the battery box, the gasket having a central opening which aligns with the battery box opening;
- b) a second layer in the form of a reverse buckling disk having a disk flange, a domed portion and a weakened score on the dome that defines a disk burst pressure, the second layer having concave and convex sides, with the height of the dome from the disk flange adjustable but accurately controlled;
- c) a third layer that is an outlet ring that sandwiches the second layer in between the first and the third layer layers, the outlet ring having a central opening surrounded by an edge;
- d) a plurality of teeth on the third layer, each said tooth extending from said edge inwardly a distance, each tooth having a circumferentially extending edge;
- e) a recess between each pair of teeth;
- f) a plurality of tabs on the first and third layers, said tabs including circumferentially spaced apart tabs on each of said first and third layers, each tab having a tab opening, said tabs generally aligning so that a fastener can be passed through the tab openings of the first layer and the second layer;
- g) the third layer is attached to the second layer which is a metal membrane by means of spot welds around the disk flange and the first layer attached to the metal disk by means of an adhesive thus forming a rupture disk assembly;
- h) wherein the second layer is generally circular and surrounded by the fasteners;
- i) wherein circumferentially extending edge of each tooth is positioned on the concave side of the second layer and next to the score;
- j) fasteners that pass through the tab openings of the first and third layers and affix the rupture disk assembly to the box and
- k) wherein the combination of teeth and recesses extend three hundred sixty degrees around said third layer outlet ring cental opening.
Dependencies are inferred from the claim text.