Firestop collar means with improved mounting means

• US 6,360,502 B1
• Filed: 09/26/2000
• Issued: 03/26/2002
• Est. Priority Date: 09/26/2000
• Status: Active Grant

• Current Assignee: Specified Technologies Incorporated
• Original Assignee: Specified Technologies Incorporated
• Inventors: Stahl, James P. Jr.
• Primary Examiner(s): Friedman, Carl D.
• Assistant Examiner(s): A, PHI DIEU TRAN
• Application Number:
  US09/670,301
• Time in Patent Office: 546 Days
• Field of Search: 522/32, 522/208, 522/19, 52/1, 527/12, 527/413, 527/452.1
• US Class Current: 52/232
• CPC Class Codes: A62C 2/065 having as the main closure device materials, whose characteristics undergo an irreversible change under high temperatures, e.g. intumescent
• CPC Class Codes: F16L 5/04 to form a firebreak device

Abstract

The present invention provides a firestop collar with an improved apparatus and method for mounting thereof with respect to a annular cavity formed in a wall or floor around a pipe or other cylindrical member protruding therethrough. The collar member preferably is positioned adjacent to the surface surrounding the protruding member and contains preferably intumescent material therein which is responsive to heat in order to expand and fill the aperture extending through the wall or panel during heat, fire or smoke conditions. The anchoring device for the present invention is adapted to hold the collar in abutment with the structural wall in position surrounding the penetrating conduit and it includes two leg members and an arcuate member. The arcuate member extends between the leg members and is made of a flexibly resilient material and has a radius of curvature less than that of the protruding conduit. The arcuate member can be flexed to cause the arcuate member to assume the same radius of curvature as the annular cavity such that it can extend therethrough such that the arcuate member is movable to the opposite side of the structural member with the two leg members secured at opposite ends of the arcuate member extending outwardly to the first side of the structural member through the cavity. These legs can then be secured to a collar member and with the arcuate member engaging the second surface of the structural member the firestop collar member is held in place securely.

Claims

1. A firestop collar means with improved mounting means positioned adjacent a cavity defined between a structural panel having an aperture therein extending from the first side to the second side thereof and a generally cylindrical penetrating member extending through the aperture, said firestop collar means comprising:

A. a collar member positioned adjacent the first side of the structural panel surrounding the cylindrical penetrating member adjacent the cavity defined between the cylindrical penetrating member and the structural panel to facilitate sealing of the aperture to inhibit movement of fire, heat and smoke therethrough;

B. an anchoring means comprising;

(1) a first leg member attached to said collar member and extending through the cavity of the structural panel to the second side thereof, said first leg member defining a first collar end attached to the collar member adjacent the first side of the structural panel and a first protruding end spatially disposed from said first collar end and extending through the cavity to the second side of the structural panel;

(2) second leg member attached to said collar member at a position spatially disposed from said first leg member, said second leg member extending through the cavity of the structural panel to the second side thereof, said second leg member defining a second collar end attached to the collar member adjacent the first side of the structural panel and a second protruding end spatially disposed from said second collar end and extending through the cavity to the second side of the structural panel; and

(3) an arcuate member secured to said first protruding end of said first leg member and to said second protruding end of said second leg member and extending through an arcuate shaped curve therebetween, said arcuate member being formed of a flexibly resilient material to allow selective modification of the radius of curvature thereof to facilitate insertion of said anchoring means through the cavity for engagement of the arcuate member with the second side of the structural panel to facilitate retaining of said collar member adjacent the cavity on the first side of the structural member.

2. A firestop collar means with improved mounting means positioned adjacent a cavity defined between a structural panel having an aperture therein extending from the first side to the second side thereof and a generally cylindrical penetrating member extending through the aperture as defined in claim 1 wherein the steady state radius of curvature of said arcuate member of said anchoring means is less than the radius of curvature of the generally cylindrical penetrating member to facilitate maintaining of abutment of said arcuate member with respect to the outer surface thereof during installation and to facilitate engagement of said arcuate member with respect to the second surface of the structural member when positioned installed through the cavity to the second side of the structural member.

3. A firestop collar means with improved mounting means positioned adjacent a cavity defined between a structural panel having an aperture therein extending from the first side to the second side thereof and a generally cylindrical penetrating member extending through the aperture as defined in claim 1 wherein said arcuate member is made of a flexibly resilient material which is sufficiently flexible in order to assume a radius of curvature approximately equal to the radius of curvature of the generally cylindrical penetrating member to facilitate insertion of said anchoring means through the cavity defined in the aperture between the structural member and the generally cylindrical penetrating member.

4. A firestop collar means with improved mounting means positioned adjacent a cavity defined between a structural panel having an aperture therein extending from the first side to the second side thereof and a generally cylindrical penetrating member extending through the aperture as defined in claim 1 wherein the cavity defined in the aperture between the structural member and the penetrating member is generally annular in shape to facilitate extending of said first leg member and said second leg member and said arcuate member therethrough and to facilitate engagement of said arcuate member with respect to the second side of the structural member and retaining of said collar member with respect to the first side of the structural member adjacent said aperture therein.

5. A firestop collar means with improved mounting means positioned adjacent a cavity defined between a structural panel having an aperture therein extending from the first side to the second side thereof and a generally cylindrical penetrating member extending through the aperture as defined in claim 1 wherein said arcuate member extends through an angle of approximately 134 degrees with a radius of curvature less than the radius of curvature of the penetrating member when in the steady state position in order to facilitate securement of said anchoring means with respect to the second side of the structural member.

6. A firestop collar means with improved mounting means positioned adjacent a cavity defined between a structural panel having an aperture therein extending from the first side to the second side thereof and a generally cylindrical penetrating member extending through the aperture as defined in claim 1 wherein said arcuate member of said anchoring means is of a semi-circular shape.

7. A firestop collar means with improved mounting means positioned adjacent a cavity defined between a structural panel having an aperture therein extending from the first side to the second side thereof and a generally cylindrical penetrating member extending through the aperture as defined in claim 1 wherein said arcuate member extends through an angle of approximately 127 degrees with a radius of curvature approximately equal to the radius of curvature of the penetrating member when in the flexed position in abutting contact with respect to the exterior surface of the generally cylindrical member for movement thereof through said cavity during insertion of said anchoring means.

8. A firestop collar means with improved mounting means positioned adjacent a cavity defined between a structural panel having an aperture therein extending from the first side to the second side thereof and a generally cylindrical penetrating member extending through the aperture as defined in claim 1 wherein said first leg member, said second leg member and said arcuate member of said anchoring means are formed of a single integral section of flexible metal wire to facilitate insertion thereof into the cavity for engaging of said arcuate member against the second surface of the structural member.

9. A firestop collar means with improved mounting means positioned adjacent a cavity defined between a structural panel having an aperture therein extending from the first side to the second side thereof and a generally cylindrical penetrating member extending through the aperture as defined in claim 1 wherein said collar member defines a chamber means therewithin and wherein said chamber means contains an intumescent material which is expandable responsive to exposure to heat to fill the aperture defined in the structural member.

10. A firestop collar means with improved mounting means positioned adjacent a cavity defined between a structural panel having an aperture therein extending from the first side to the second side thereof and a generally cylindrical penetrating member extending through the aperture as defined in claim 1 wherein said anchoring means is positioned spatially disposed from the penetrating member whenever said arcuate member is in the position of engagement with respect to the second side of the structural member to facilitate maintaining of engagement between said arcuate member and the second side of the structural member and engagement of said collar member with the structural member adjacent the aperture defined therein responsive to a possible condition of disintegration of the generally cylindrical penetrating member during exposure thereof to excessive heat.

11. A firestop collar means with improved mounting means positioned adjacent a cavity defined between a structural panel having an aperture therein extending from the first side to the second side thereof and a generally cylindrical penetrating member extending through the aperture as defined in claim 1 wherein said first leg member and said second leg member of said anchoring means extend approximately parallel with respect to one another and wherein said first leg member and said second leg member extend outwardly away from said arcuate member in a direction approximately perpendicular with respect thereto.

12. A firestop collar means with improved mounting means positioned adjacent a cavity defined between a structural panel having an aperture therein extending from the first side to the second side thereof and a generally cylindrical penetrating member extending through the aperture as defined in claim 1 wherein said anchoring means is made of metal material and wherein said arcuate member and said first protruding end of said first leg member and said second protruding end of said second leg member are heat treated to enhance flexible resilience thereof.

13. A firestop collar means with improved mounting means positioned adjacent a cavity defined between a structural panel having an aperture therein extending from the first side to the second side thereof and a generally cylindrical penetrating member extending through the aperture, said firestop collar means comprising:

A. a collar member positioned adjacent the first side of the structural panel surrounding the cylindrical penetrating member adjacent the cavity defined between the cylindrical penetrating member and the structural panel to facilitate sealing of the aperture to inhibit movement of fire, heat and smoke therethrough;

B. an anchoring means comprising;

(1) a primary anchor member comprising;

(a) a first primary leg member attached to said collar member and extending through the cavity of the structural panel to the second side thereof, said first primary leg member defining a first primary collar end attached to the collar member adjacent the first side of the structural panel and a first primary protruding end spatially disposed from said first primary collar end and extending through the cavity to the second side of the structural panel;

(b) a second primary leg member attached to said collar member at a position spatially disposed from said first primary leg member, said second primary leg member extending through the cavity of the structural panel to the second side thereof, said second primary leg member defining a second primary collar end attached to the collar member adjacent the first side of the structural panel and a second primary protruding end spatially disposed from said second primary collar end and extending through the cavity to the second side of the structural panel;

(c) a primary arcuate member secured to said first primary protruding end of said first primary leg member and to said second primary protruding end of said second primary leg member and extending through an arcuate shaped curve therebetween, said primary arcuate member being formed of a flexibly resilient material to facilitate insertion of said primary anchoring member through the cavity for engagement of the primary arcuate member with the second side of the structural panel to facilitate retaining of said collar member adjacent the cavity on the first side of the structural member; and

(2) a secondary anchor member comprising;

(a) a first secondary leg member attached to said collar member and extendable through the cavity of the structural panel to the second side thereof, said first secondary leg member defining a first secondary collar end attached to the collar member adjacent the first side of the structural panel and a first secondary protruding end spatially disposed from said first secondary collar end and extending through the cavity to the second side of the structural panel;

(b) a second secondary leg member attached to said collar member at a position spatially disposed from said first secondary leg member, said second secondary leg member extending through the cavity of the structural panel to the second side thereof, said second secondary leg member defining a second secondary collar end attached to the collar member adjacent the first side of the structural panel and a second secondary protruding end spatially disposed from said second secondary collar end and extending through the cavity to the second side of the structural panel; and

(c) a secondary arcuate member secured to said first secondary protruding end of said first secondary leg member and to said second secondary protruding end of said second secondary leg member and configured extending through an arcuate shaped curve therebetween, said secondary arcuate member being formed of a flexibly resilient material to facilitate insertion of said secondary anchoring member through the cavity for engagement of the secondary arcuate member with the second side of the structural panel to facilitate retaining of said collar member adjacent the cavity on the first side of the structural member.

14. A firestop collar means with improved mounting means positioned adjacent an annular cavity defined between a structural panel having an aperture therein extending from the first side to the second side thereof and a generally cylindrical penetrating member extending through the aperture, said firestop collar means comprising:

A. a collar member positionable adjacent the first side of the structural panel surrounding the cylindrical penetrating member adjacent the cavity defined between the cylindrical penetrating member and the structural panel to facilitate sealing of the aperture to inhibit movement of fire, heat and smoke therethrough, said collar member defining a chamber means therewithin and wherein said chamber means contains an intumescent material which is expandable responsive to exposure to heat to fill the aperture defined in the structural member;

B. an anchoring means comprising;

(1) first leg member attached to said collar member and extending through the cavity of the structural panel to the second side thereof, said first leg member defining a first collar end attached to the collar member adjacent the first side of the structural panel and a first protruding end spatially disposed from said first collar end and extending through the cavity to the second side of the structural panel;

(2) a second leg member attached to said collar member at a position spatially disposed from said first leg member, said second leg member extending through the cavity of the structural panel to the second side thereof, said second leg member defining a second collar end attached to the collar member adjacent the first side of the structural panel and a second protruding end spatially disposed from said second collar end and extending through the cavity to the second side of the structural panel; and

(3) a arcuate member of semi-circular shape secured to said first protruding end of said first leg member and to said second protruding end of said second leg member and extending through an arcuate shaped curve therebetween, said arcuate member being formed of a flexibly resilient material to facilitate insertion of said anchoring means through the cavity for engagement of the arcuate member with the second side of the structural panel to facilitate retaining of said collar member adjacent the cavity on the first side of the structural member, said arcuate member having a steady state radius of curvature being less than the radius of curvature of the generally cylindrical penetrating member to facilitate maintaining of engagement of said arcuate member with respect to the outer surface thereof during installation and to facilitate engagement of said arcuate member with respect to the second surface of the structural member when positioned installed through the cavity to the second side of the structural member, said arcuate member made of a flexibly resilient material which is sufficiently flexible in order to assume a radius of curvature approximately equal to the radius of curvature of the generally cylindrical penetrating member to facilitate insertion of said anchoring means through the cavity defined in the aperture between the structural member and the generally cylindrical penetrating member, said first leg member and said second leg member and said arcuate member of said anchoring means being formed of a single integral section of flexible wiring to facilitate insertion thereof into the annular cavity for engaging of said arcuate member against the second surface of the structural member.

15. A method for anchoring a firestop collar member to a first side of a structural member adjacent an aperture defined therein with a generally cylindrical penetrating member extending therethrough to define a cavity of generally annular shape therebetween extending through to the second surface of the structural member, comprising:

A. providing an anchoring device including an arcuate member with a given steady state radius of curvature which is flexibly resilient with two leg members secured thereto at positions spatially disposed from one another and extending outwardly away from the arcuate member;

B. applying of a force to the leg members in order to increase the relative distance therebetween for increasing the radius of curvature of the arcuate member by flexing thereof such that the increased radius of curvature is approximately equal to the radius of curvature of the annular cavity;

C. inserting of the arcuate member of the anchoring device into and completely through the annular cavity to a position adjacent the second surface of the structural member with the two leg members extending outwardly therefrom through the annular cavity and exiting therefrom adjacent the first surface of the structural member;

D. releasing of the force applied to the leg members to allow the legs and the arcuate member to assume the steady state radius of curvature thereof in order to allow the arcuate member to extend outwardly from the annular cavity;

E. moving the arcuate member into abutment with the second surface of the structural member immediately adjacent the annular cavity for securement thereagainst with both leg members positioned extending therefrom through the cavity and exiting thereof adjacent the first surface of the structural member;

F. providing a firestop collar for selectively sealing the aperture extending through the structural member; and

G. securing of the firestop collar to the leg members of the anchoring device in a position surrounding the generally cylindrical penetrating member in abutment with the first side of the structural member around the aperture defined therethrough to facilitate sealing thereof responsive to conditions of fire, heat and smoke.

16. A method for anchoring a firestop collar member to a first side of a structural member adjacent an aperture defined therein with a generally cylindrical penetrating member extending therethrough to define a cavity of generally annular shape therebetween extending through to the second surface of the structural member as defined in claim 15 wherein said providing of an anchoring device includes two leg member extending outwardly away from the arcuate member approximately parallel with respect to one another to facilitate movement thereof and of the arcuate member through the generally annular cavity.

17. A method for anchoring a firestop collar member to a first side of a structural member adjacent an aperture defined therein with a generally cylindrical penetrating member extending therethrough to define a cavity of generally annular shape therebetween extending through to the second surface of the structural member as defined in claim 15 wherein said providing of the firestop collar includes providing of intumescent material to be retained therewithin and being adapted to intumescently expand to facilitate sealing of the aperture extending through the structural member responsive to heat.

18. A method for anchoring a firestop collar member to a first side of a structural member adjacent an aperture defined therein with a generally cylindrical penetrating member extending therethrough to define a cavity if generally annular shape therebetween extending through to the second surface of the structural member as defined in claim 15 wherein said providing of an anchoring device includes providing an arcuate member and a two leg members formed as a single integral member formed of a flexibly resilient wire member in order to facilitate flexing of the arcuate member as desired to selectively modify the radius of curvature thereof.

19. A method for anchoring a firestop collar member to a first side of a structural member adjacent an aperture defined therein with a generally cylindrical penetrating member extending therethrough to define a cavity of generally annular shape therebetween extending through to the second surface of the structural member as defined in claim 15 wherein said inserting of the arcuate member of the anchoring device is performed by placing the leg members of the anchoring device in abutment with the generally cylindrical penetrating member extending parallel with respect thereto and with the arcuate member in abutment with the outer circular circumference of the generally cylindrical penetrating member to more easily be movable through the annular cavity defined thereadjacent.

20. A meth d for anchoring a firestop collar member to a first side of a structural member adjacent an aperture defined therein with a generally cylindrical penetrating member extending therethrough to define a cavity of generally annular shape therebetween extending through to the second surface of the structural member as defined in claim 15 wherein said releasing of the force applied to the leg members allows the leg members to return to the steady state spacing therebetween in position extending through the annular cavity with the radius of curvature of the arcuate member in the steady state condition less than the radius of curvature of the annular cavity.

21. A method for anchoring a firestop collar member to a first side of a structural member adjacent an aperture defined therein with a generally cylindrical penetrating member extending therethrough to define a cavity of generally annular shape therebetween extending through to the second surface of the structural member as defined in claim 15 wherein said securing of the firestop collar to the leg members of the anchoring device is performed by placing the leg members of the anchoring device in direct abutment with the external surface of the generally cylindrical penetrating member and placing the firestop collar member in surrounding engagement extending over and around the penetrating member and the leg members of the anchoring members to hold the leg members in place.

22. A method for anchoring a firestop collar member to a first side of a structural member adjacent an aperture defined therein with a generally cylindrical penetrating member extending therethrough to define a cavity of generally annular shape therebetween extending through to the second surface of the structural member, comprising:

A. providing an first anchoring device including a first arcuate member with a given steady state radius of curvature which is flexibly resilient with two first leg members secured thereto spatially disposed from one another and extending outwardly away from the first arcuate member;

B. applying of a force to the first leg members in order to increase the relative distance therebetween for increasing the radius of curvature of the first arcuate member by flexing thereof such that the increased radius of curvature is approximately equal to the radius of curvature of the annular cavity;

C. inserting of the first arcuate member of the first anchoring device into and completely through the annular cavity to a position adjacent the second surface of the structural member with the two first leg members extending outwardly therefrom through the annular cavity and exiting therefrom adjacent the first surface of the structural member;

D. releasing of the force applied to the first leg members to allow the first leg members and the first arcuate member to assume the steady state radius of curvature thereof in order to allow the first arcuate member to move into direct abutment with respect to the second surface of the structural member;

E. allowing the first arcuate member to abut the second surface of the structural member immediately adjacent the annular cavity for securement thereagainst with both first leg members positioned extending therefrom through the cavity and exiting thereof adjacent the first surface of the structural member;

F. providing an second anchoring device including a second arcuate member with a given steady state radius of curvature which is flexibly resilient with two second leg members secured thereto spatially disposed from one another and extending outwardly away from the second arcuate member;

G. applying of a force to the second leg members in order to increase the relative distance therebetween for increasing the radius of curvature of the second arcuate member by flexing thereof such that the increased radius of curvature is approximately equal to the radius of curvature of the annular cavity;

H. inserting of the second arcuate member of the second anchoring device into and completely through the annular cavity at a location diametrically opposite from the position of inserting of the first arcuate member of the first anchoring device, the second arcuate member being inserted to a position adjacent the second surface of the structural member with the two second leg members extending outwardly therefrom through the annular cavity and exiting therefrom adjacent the second surface of the structural member;

I. releasing of the force applied to the second leg members to allow the second legs and the second arcuate member to assume the steady state radius of curvature thereof in order to allow the second arcuate member to move into direct abutment with respect to the second surface of the structural member;

J. allowing the second arcuate member to abut the second surface of the structural member immediately adjacent the annular cavity for securement thereagainst with both second leg members positioned extending therefrom through the cavity and exiting thereof adjacent the second surface of the structural member;

K. providing a firestop collar for selectively sealing the aperture extending through the structural member; and

L. securing of the firestop collar to the leg members of the first anchoring device and the second anchoring device in a position surrounding the generally cylindrical penetrating member in abutment with the first side of the structural member around the aperture defined therethrough to facilitate sealing thereof responsive to conditions of fire, heat and smoke.