Firestop collar
AssigneeJ. van Walraven Holding B. V
InventorJan VAN WALRAVEN
Life of this patent
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Abstract
A metal casing strip for a fire collar to be arranged around a duct has a line of successive tongues and cutouts in the longitudinal direction of the strip. The tongues and cutouts are arranged in the strip in an alternating fashion. The tongues are bendable out of the surface of the casing strip such that in use, when the casing strip is arranged around a pipe such that two end regions overlap, an outwardly bended tongue from the one end region is inserted in a cutout of the overlapping other end region and folded over the edge of the cutout to retain the casing strip in the closed collar shape.
Claims20
Metal casing strip for a fire collar to be arranged around a pipe or other duct, wherein the casing strip has a line of successive tongues and cutouts in the longitudinal direction of the strip, which tongues and cutouts are arranged in the strip in an alternating fashion, wherein the tongues are bendable out of the surface of the casing strip such that in use, when the casing strip is arranged around a pipe or other duct such that two end regions overlap, an outwardly bended tongue from the one end region is inserted in a cutout of the overlapping other end region and folded over the edge of the cutout to retain the casing strip in the closed collar shape.
Combination of a metal casing strip for a fire collar to be arranged around a pipe or other duct and an attachment bracket for attaching the casing strip to a support surface, wherein the casing strip has a line of successive tongues and cutouts in the longitudinal direction of the strip, which tongues and cutouts are arranged in the strip in an alternating fashion, wherein the tongues are bendable out of the surface of the casing strip such that in use, when the casing strip is arranged around a pipe or other duct such that two end regions overlap, an outwardly bended tongue from the one end region is inserted in a cutout of the overlapping other end region and folded over the edge of the cutout to retain the casing strip in the closed collar shape, wherein above the free end of the tongue is a clearance space and wherein the bracket has an end edge with at least one tooth provided on it, which tooth are insertable through the clearance space, such that the tooth engages behind the tongue, whereby, when the bracket is moved downwards, the tongue is bended out of the surface of the casing strip.
Combination of a metal casing strip for a fire stop collar and an attachment bracket for attaching the casing strip to a support surface, said metal casing strip having successive segments with a weakening line between successive segments, which metal casing strip in use is severed at a weakening line to bring the casing strip to the desired length to allow it to be wrapped around a pipe or other duct, said bracket having a side edge as well as holding and positioning means for holding the strip, wherein the side edge of the bracket is positioned over one of the weakening lines and the strip can be bended and broken along said side edge of the bracket when in use the positioning means of the bracket are in cooperation with the positioning means of the casing.
Metal casing strip for a fire stop collar adapted to be used with an attachment bracket for attaching the casing strip to a support surface, said metal casing strip having successive segments with a weakening line between successive segments, which metal casing strip in use is severed at a weakening line to bring the casing strip to the desired length to allow it to be wrapped around a pipe or other duct, said bracket having a side edge as well as holding and positioning means for holding the strip, wherein the side edge of the bracket is positioned over one of the weakening lines and the strip can be bended and broken along said side edge of the bracket when in use the positioning means of the bracket are in cooperation with the positioning means of the casing.
Dependencies are inferred from the claim text.