Intumescent security pin for fire rated doors
AssigneePemko Manufacturing Company
InventorPhilip A. Goossens
Life of this patent
Estimating the term…
Abstract
In a door assembly composed of a door frame, a door having a hinge side and a hinge supporting the door on the frame for pivotal movement of the door between an open position and a closed position, the hinge side of the door facing, and being adjacent to, a portion of the frame when the door is in the closed position, the door is provided with a recess in the hinge side; and the assembly is further provided with at least one projecting element secured to the frame portion to project into the recess when the door is in the closed position and having a mass of thermally intumescent material which is expandable for securing the projecting element to the door upon being heated above a predetermined temperature.
Claims14
In a door assembly composed of a door frame, a door having a hinge side and a hinge supporting the door on the frame for pivotal movement of the door between an open position and a closed position, the hinge side of the door facing, and being adjacent to, a portion of the frame when the door is in the closed position, the improvement wherein:
- said door is provided with a recess in said hinge side;
- and
- said assembly further comprises at least one projecting element secured to said frame portion to project into said recess when said door is in the closed position, said projecting element comprising a metal pin having a longitudinal axis perpendicular to said frame portion, a free end remote from said frame portion and a bore extending along said longitudinal axis and opening at said free end, and a mass of thermally intumescent material which fills said bore and which is expandable for securing said projecting element to said door upon being heated above a predetermined temperature.
In a door assembly composed of a door frame, a door having a hinge side and a hinge supporting the door on the frame for pivotal movement of the door between an open position and a closed position, the hinge side of the door facing, and being adjacent to, a portion of the frame when the door is in the closed position, the improvement wherein:
- said door is provided with a recess in said hinge side;
- and
- said assembly further comprises at least one projecting element secured to said frame portion to project into said recess when said door is in the closed position, said element comprising a mass of thermally intumescent material which is expandable for securing said projecting element to said door upon being heated above a predetermined temperature
- wherein said at least one projecting element is permanently fixed in a position in which said projecting element projects into said recess when said door is in the closed position.
Dependencies are inferred from the claim text.