Fireproofing

• US 5,950,376 A
• Filed: 05/28/1997
• Issued: 09/14/1999
• Est. Priority Date: 08/01/1994
• Status: Expired due to Fees

• Current Assignee: MM Systems Corporation
• Original Assignee: MM Systems Corporation
• Inventors: Kemeny, Zoltan A., Attaway, Julian J., Attaway, J. Paul, Schuerman, C. Michael
• Primary Examiner(s): Friedman, Carl D.
• Assistant Examiner(s): WILKENS, KEVIN DOUGLAS
• Application Number:
  US08/865,396
• Time in Patent Office: 839 Days
• Field of Search: 52/1, 52/19, 52/20, 52/21, 52/167.1, 52/167.3, 52/169.6, 52/232, 52/236.3, 52/262, 52/265, 52/317, 52/481.1, 52/573.1, 52/721.4, 52/721.5 , 52/723.1, 52/723.2, 52/736.3, 52/736.4, 52/737.5, 52/738.1, 52/787.11, 52/793.11, 52/741.3
• US Class Current: 52/167.1
• CPC Class Codes: E04B 1/94 against fire fire protection of partitions E04B2/7403, E04B2/7409; supporting constructions for ceilings having the capability of expansion in case of fire E04B9/08; fire-fighting A62C, e.g. fire prevention or containment A62C2/00; impregnation of wood or similar materials B27K; fireproof paints C09D5/18; fireproofing materials C09K21/00; flame-resistant papers D21H5/0002; coverings or linings, e.g. for walls or ceilings, in general E04F13/00; fireproof doors E06B5/16; firebreak devices for pipes or the like passing through walls F16L5/04; protection of pipes by means of non-inflammable material F16L57/04

Abstract

A fire proofing assembly with friction sliding surfaces to accommodate wide horizontal seismic isolator movements placed around seismic isolators and in partitions at the perimeter of isolation spaces. Heat reflecting, insulating and intumescent layers may be interposed at friction surfaces. Normal force to friction may be maintained by spring. Temporary, partial dissembling arrangement provided for isolation bearing inspection. Elastomeric curtain may be provided for fire hose test.

Claims

1. A displaceable fire proofing assembly enclosing and accommodating relative movement between two or more ends of an enclosed isolation bearing comprising:

a first wall having a plurality of spaced apart stud members with first covering members on either side of said stud members, said first wall attached to a first location above said bearing, said first wall including a first rigid abutting surface on at least one of said first covering members, said first rigid abutting surface lined with a first heat reflective layer; and

a second wall abutting said first wall, said second wall having a plurality of spaced apart stud members with second covering members on either side of said stud members, said second wall attached to a second location below said bearing, said second wall including a second rigid abutting surface on at least one of said second covering members, said second rigid abutting surface lined with a second heat reflecting layer for frictionally engaging said first rigid abutting surface.

2. The fire proofing assembly of claim 1, wherein said first heat reflective layer and said second heat reflective layer further includes at least one of a fire blanket and an intumescent material.

3. The fire proofing assembly of claim 1, wherein said assembly is prefabricable.

4. The fire proofing assembly of claim 1, wherein said assembly allows for periodic visual inspection of said isolation bearing.

5. The fire proofing assembly of claim 1, wherein said assembly is comprised of fire rated materials, said fire rated materials fire rate after at least one of small horizontal displacement, small compression and small uplift.

6. The fire proofing assembly of claim 1, wherein said assembly substantially restricts smoke and flame.

7. The fire proofing assembly of claim 1, wherein said assembly includes a curtain over said first and second abutting surfaces, whereby said curtain is configured to drop water.

8. The fire proofing assembly of claim 1, wherein said first and second abutting surfaces further include a spring, whereby said spring exerts a force against said first and second reflecting layers, respectively.

12. The method of claim 8, wherein said displaceable fire proof assembly is comprised of fire rated materials where said fire rated materials first rate after at least one of small horizontal displacement, small compression and small uplift.

9. A method for enclosing and accommodating relative movement between two or more ends of an enclosed isolation bearing with a displaceable fire proofing assembly, wherein said method includes the steps of:

providing an isolation bearing;

providing a first wall having a plurality of spaced apart stud members with first covering members on either side of said stud members;

providing a first rigid abutting surface on one of said first covering members;

lining said first rigid abutting surface with a first heat reflective layer;

attaching said first wall to a first location above said bearing;

providing a second wall abutting said first wall, said second wall having a plurality of spaced apart stud members with second covering members on either side of said stud members;

providing a second rigid abutting surface on one of said second covering members;

lining said second rigid abutting surface with a second heat reflecting layer;

attaching said second wall to a second location below said bearing;

frictionally engaging said first rigid abutting surface against said second rigid abutting surface.

10. The method of claim 9, wherein said step of lining said first abutting surface and said second abutting surface further includes providing at least one of a fire blanket and an intumescent material under said first and second heat reflecting layer, respectively.

11. The method of claim 9, wherein said method includes providing a prefabricable assembly.

13. The method of claim 9 further including the step of substantially restricting smoke and flame.

14. The method of claim 9 further including dropping water, wherein said assembly further includes providing a curtain over said first and second abutting surface, whereby said curtain is configured to drop water.

15. The method of claim 9, wherein said steps of providing said first and second abutting surfaces further include providing a spring, whereby said spring exerts a force against said first and second reflecting layers, respectively.