Fire safety device
AssigneeNational Improvement Company, Inc.
InventorsEric B. Robertson, John C. Ibasfalean, Daniel D. Ibasfalean
Life of this patent
Estimating the term…
Abstract
A fire safety device for closing through-holes in floors and walls and for thus stopping the potential spread of fire and smoke in case of the occurrence of a fire, includes a section of conduit, a cup-shaped retainer spaced from the outside surface of the conduit section so as to define an annular space therebetween, the annular space containing a suitable and pre-measured quantity of intumescent material, and a floating floor below the intumescent material which, in the event of fire, will move inwardly to occupy the interior space previously occupied by the conduit section.
Claims16
In a fire safety device for use in construction to seal an opening in a fire or smoke rated floor or wall to restore integrity of the floor or wall upon occurrence of a fire, comprising:
- a hollow conduit section having an exterior surface;
- a retainer surrounding said conduit section and having a portion spaced therefrom to create a confined space between said conduit section exterior surface and said retainer, said retainer further having a portion generally defining a floor thereof;
- a pre-selected quantity of intumescent material within the confined spaced between said retainer and said conduit exterior surface;
- and
- a cover disk means for preventing escape of hot intumescent material from the confined space between said retainer and said conduit section at an end of said retainer opposite said portion defining its floor;
- the improvement wherein said fire safety device further comprises;
- extension means for extending the floor of said retainer inwardly upon destruction of said conduit section, said extension means resting on an inner surface of said retainer but being unconnected to said retainer.
In a fire safety device for use in construction to seal an opening in a fire or smoke rated floor or wall to restore integrity of the floor or wall upon occurrence of a fire, comprising:
- a hollow conduit section having an exterior surface;
- a retainer surrounding said conduit section and having a portion spaced therefrom to create a confined spaced between said conduit section exterior surface and said retainer, said retainer further having a portion generally defining a floor thereof;
- a pre-selected quantity of intumescent material within the confined spaced between said retainer and said conduit exterior surface;
- and
- a cover disk means for preventing escape of hot intumescent material from the confined space between said retainer and said conduit section at an end of said retainer opposite said portion defining its floor;
- the improvement wherein said fire safety device further comprises
- extension means for extending the floor of said retainer inwardly upon destruction of said conduit section,
- said extension means comprising a plurality of floating tabs in generally side-by-side relationship extending generally across said confined space above said floor of said retainer.
In a fire safety device for use in construction to seal an opening in a fire or smoke rated floor or wall to restore integrity of the floor or wall upon occurrence of a fire, comprising:
- a hollow conduit section having an exterior surface and defining a central axis;
- a retainer surrounding said conduit section and having a portion spaced therefrom to create a confined space between said conduit section exterior surface and said retainer, said retainer further having a portion generally defining a floor thereof;
- a pre-selected quantity of intumescent material within the confined space between said retainer and said conduit exterior surface;
- and
- a cover disk means for preventing escape of hot intumescent material from the confined space between said retainer and said conduit section at an end of said retainer opposite said portion defining its floor;
- the improvement wherein said fire safety device further comprises
- extension means for extending the floor of said retainer inwardly upon destruction of said conduit section,
- said extension means comprising a plurality of elements collectively defining an outer circumference, said elements being capable of moving inwardly in a generally equal manner from said outer circumference toward said axis upon destruction of said conduit section.
Dependencies are inferred from the claim text.