All purpose seal
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsRobert Redfern, Constantine Pappas, Luke Cassario
Life of this patent
Estimating the term…
Abstract
An apparatus for sealing a doorway, more particularly, an all purpose gasket structure capable of sealing a doorway against the entry of water, smoke, and fire. The gasket is primarily an elongated silicone rubber structure having a ridged rectangular cross section for mounting to a gasket retainer. The gasket also includes a crush zone which collapses inwardly when pressure is applied to the gasket surface, resulting in improved sealing and the blockage of water intrusion paths. The gasket may further include an intumescent section within the elongated silicone rubber structure. In the sealing arrangement, the gasket is arranged within a gasket retainer that surrounds the doorway, thereby sealing boundaries between areas of personal egress.
Claims15
A gasket comprising:
- an elongated silicone rubber member having a ridged rectangular cross-section for mounting to a gasket retainer and a door frame, the ridged rectangular cross-section comprising:
- a back side with a first end and a second end;
- a front side with a first end and a second end;
- a first side extending from the first end of the back side to the first end of the front side;
- a second side extending from the second end of the back side to the second end of the front end;
- and
- a ridged portion protruding from the front side, wherein the back side, the front side, the first side, and the second side are for contacting inner walls of the gasket retainer, and the ridged portion is for contacting a knife edge of the door frame;
- and
- an elongated crush zone within the elongated silicone rubber member formed substantially adjacent to a surface of the ridged portion of the elongated silicone rubber member;
- and wherein
- the gasket further comprises an elongated intumescent section within the elongated silicone rubber member formed substantially adjacent to the back side of the elongated silicone rubber member.
An all-purpose sealing arrangement having:
- a door frame;
- a door panel attached to the door frame;
- a gasket pressing member having a knife edge, the gasket pressing member attached to the door frame;
- a gasket retainer attached to the door panel, the gasket retainer having a substantially rectangular channel;
- a wedge attached to a back side of the door panel;
- a dogging structure attached to the door frame for applying a force on the gasket via the wedge;
- a gasket comprising an elongated silicone rubber member having a ridged rectangular cross-section for mounting to the gasket channel, the ridged rectangular cross-section comprising:
- a back side with a first end and a second end;
- a front side with a first end and a second end;
- a first side extending from the first end of the back side to the first end of the front side;
- a second side extending from the second end of the back side to the second end of the front end;
- and
- a ridged portion protruding from the front side, wherein the back side, the front side, the first side, and the second side contact the gasket channel, and the ridged portion contacts the knife edge of the pressing member;
- an elongated crush zone within the elongated silicone rubber member formed substantially adjacent to the ridged portion of the elongated silicone rubber member;
- and
- an elongated intumescent section within the elongated silicone rubber member formed substantially adjacent to the back side of the elongated silicone rubber member.
Dependencies are inferred from the claim text.