Butterfly vent
AssigneeBS&B Innovations Limited
InventorsSteven Farwell, Geoffrey Brazier
Life of this patent
Estimating the term…
Abstract
A pressure relief device is disclosed. The pressure relief device may take the form of a “butterfly” vent, including paired burst panels or blow-out portions that are configured to open in a manner similar to a butterfly flapping its wings. Upon opening, the paired burst panels may contact each other, thereby absorbing kinetic energy. The burst panels may be positioned within a frame or may be formed or cut from a single sheet. A cord may be provided between the burst panels to retain the burst panels and/or ensure that the burst panels open substantially simultaneously. The pressure relief device also may include an activation mechanism to control the opening of the burst panels, one or more hinge members, and/or a braking member.
Claims16
A pressure relief device comprising:
- a first vent, the first vent comprising a first panel;
- a second vent, the second vent comprising a second panel;
- and
- a connecting member interposed between the first panel and second panel, the first panel and second panel configured to rotate relative to the connecting member;
- and
- a cord having a first end and a second end, the first end joined to the first panel and the second end joined to the second panel, wherein the cord is configured to join the first panel and second panel in tension;
- wherein the first panel is configured to open upon activation of the first vent;
- wherein the second panel is configured to open upon activation of the second vent;
- and
- wherein the first panel and second panel are configured to engage at least their outer ends upon opening.
A pressure relief device, comprising:
- a frame having a central portion, wherein the central portion of the frame defines an eyelet;
- a cord having a first end and a second end;
- wherein the cord is passed through the eyelet;
- a first burst panel mounted within the frame, wherein the first burst panel is configured to rotate relative to the central portion upon opening;
- and
- a second burst panel mounted within the frame, wherein the second burst panel is configured to rotate relative to the central portion upon opening;
- wherein the first end of the cord is attached to the first panel;
- and
- wherein the second end of the cord is attached to the second panel;
- wherein the first burst panel and second burst panel are configured to activate and open upon experiencing a predetermined pressure differential;
- and
- wherein at least a portion of the first burst panel engages with at least a portion of the second burst panel upon activation.
A pressure relief device, comprising:
- a sheet;
- wherein the sheet includes a first line of weakness defining a first burst panel, a second line of weakness defining a second burst panel, and a central portion between the first burst panel and the second burst panel;
- a cord joining the first burst panel to the second burst panel;
- wherein the first burst panel is configured to activate and rotate relative to the central portion upon experiencing a predetermined pressure differential, wherein rotation of the first burst panel creates a first opening in the sheet;
- wherein the cord is configured to transmit a tensile force between the first burst panel and second burst panel upon activation of the first burst panel;
- wherein the second burst panel is configured to activate and rotate relative to the central portion upon experiencing a predetermined pressure differential, wherein rotation of the second burst panel creates a second opening in the sheet;
- and
- wherein at least a portion of the first burst panel is configured to contact at least a portion of the second burst panel upon activation of the first burst panel and second burst panel.
Dependencies are inferred from the claim text.