Firestop collar

摘要

A firestop collar including a support band made of sheet metal and an intumescent strip that runs along the support band and is connected to it. The support band is provided with several pre-defined cutting zones which are at a distance from each other in the lengthwise direction and which run crosswise to the lengthwise direction. The intumescent strip has cutting areas that are oriented in the same manner and in which the intumescent strip is thinner than it is in the adjacent areas in the lengthwise direction. The cutting areas coincide with the cutting zones of the support band.

主权项

1. A firestop collar comprising:
a support band made of sheet metal, the support band including a plurality of pre-defined cutting zones at a distance from each other in a lengthwise direction of the support band and running crosswise to the lengthwise direction; and an intumescent strip running along the support band and connected to the support band, the intumescent strip having several cutting areas oriented in a similar manner where the intumescent strip is thinner than in adjacent areas in the lengthwise direction, the cutting areas coinciding with the cutting zones; wherein the support band includes a plurality of hooks created by stamping and bending sheet metal sections of the support band, and wherein the stamped sheet metal sections are arranged in groups and openings formed by stamping the sheet metal sections overlap with the cutting zones.