Static structures (e.g. – buildings) – Facers; e.g. – modules – mutually bonded by internal settable... – Lapped or bridger strip juncture-type surfacing
Reexamination Certificate
1998-01-22
2001-05-08
Callo, Laura A. (Department: 3635)
Static structures (e.g., buildings)
Facers; e.g., modules, mutually bonded by internal settable...
Lapped or bridger strip juncture-type surfacing
C052S460000
Reexamination Certificate
active
06226946
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to walls and barriers in general, and to industry standard rated fire walls and the materials for fabricating such walls in particular.
BACKGROUND OF THE INVENTION
Throughout the country, local building codes and national standard practices require that steps be taken in commercial and residential construction to slow the spread of fire through attics, crawlspaces, and other interior locations. One such step is the construction of fire walls from wood or metal trusses or stud walls. A fire wall is created by fastening flat modular units to the wood or metal studs. These units, known as fire-rated gypsum board, are abutted edge to edge, and provide a barrier to flame and fire-fighting water. Because of the modular construction of the gypsum board, gaps or seams are presented between individual modules. Standard practices require that these gaps be covered to reduce the rate of flame and water penetration through the fire wall. Conventionally, a paper tape has been applied to the seams and adhered thereto by a coating of a wet plaster-like compound known as mud.
Fire walls are usually not in public areas of the building, and thus do not require a high level of decorative finish. Yet the application of the liquid mud can be difficult and cumbersome, as fire walls are often located in cramped or difficult to reach spaces.
Self-adhesive drywall tapes for finish drywall have been previously suggested. An open fiberglass mesh self-adhesive drywall joint tape has been used, and a perforated self-adhesive drywall tape has also been known in finishing applications. Nonetheless, the perforations or openings in these tapes make their application in a fire wall unacceptable.
What is needed is a tape for the construction of a fire wall which may be applied in a single step without the need for application of mud.
SUMMARY OF THE INVENTION
The wall board joint tape of this invention has a base layer one surface of which is covered with a pressure sensitive adhesive for convenient application to a joint between fire-rated gypsum board panel. The opposite surface of the base layer has a release coating thereon, so the adhesive coated tape may be wound on itself in a roll for convenient dispensing. The base layer may be paper or plastic material.
It is an object of the present invention to provide a tape for application to fire-rated gypsum board panels which is self-adhesive and which does not require application of mud to adhere to the panels.
It is a further object of the present invention to provide a paper tape assembly for application to fire-rated gypsum board panels which may be wound in rolls for releasable engagement with itself.
It is an additional object of the present invention to provide a tape for application in fire walls.
Further objects, features and advantages of the invention will be apparent from the following detailed description when taken in conjunction with the accompanying drawings.
REFERENCES:
patent: 1357350 (1920-11-01), Schumacher
patent: 2463244 (1949-03-01), Carter
patent: 2502499 (1950-04-01), Ames
patent: 3300330 (1967-01-01), Vassel et al.
patent: 3575771 (1971-04-01), Padgtt
patent: 3625798 (1971-12-01), Ihli
patent: 3788941 (1974-01-01), Kupits
patent: 4041201 (1977-08-01), Wurker
patent: 4042739 (1977-08-01), Emal et al.
patent: 4313991 (1982-02-01), Lamb
patent: 4331727 (1982-05-01), Maas
patent: 4398985 (1983-08-01), Eagon
patent: 4406730 (1983-09-01), Altmix
patent: 4522004 (1985-06-01), Evans et al.
patent: 4652331 (1987-03-01), Plasencia
patent: 4707202 (1987-11-01), Sweeny
patent: 4750968 (1988-06-01), Sweeny
patent: 4757783 (1988-07-01), Matheny
patent: 4792473 (1988-12-01), Vitale
patent: 4835925 (1989-06-01), Hoffmann, Sr.
patent: 4863774 (1989-09-01), Tucker
patent: 4913766 (1990-04-01), Löjdström
patent: 4977718 (1990-12-01), Hoffman, Sr.
patent: 5037686 (1991-08-01), Conboy
patent: 5198300 (1993-03-01), Matthews et al.
patent: 5242725 (1993-09-01), Weissmann et al.
patent: 5246775 (1993-09-01), Loscuito
patent: 5486394 (1996-01-01), Stough
patent: 869952 (1971-05-01), None
patent: 2305919 (1976-10-01), None
patent: 48-27462 (1973-08-01), None
Stough Ronald A.
Thompson Edward A.
Callo Laura A.
E-Z Taping System, Inc.
Lathrop & Clark LLP
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