Fire retardant partitioning for openings for plastic pipe lines
AssigneeGeberit AG
InventorRene Dolder
Life of this patent
Estimating the term…
Abstract
Partitioning for preventing the spread of fire or smoke through wall apertures created by the burning of plastic pipe. Pre-stressed metal squeezing elements are retained by plastic bolts which melt at about 120.degree. C., releasing the squeezing elements and permitting them to squeeze together the heat-softened plastic pipe. An insert of foamable material may additionally be used to supplement the aperture sealing effect.
Claims7
Fire retardant partitioning means for openings for a plastic pipe line through building walls and floors, comprising a housing surrounding a said pipe line, said housing having at least one resilient corrugated metal squeezing element held in a squeezed pre-stressed state by strain bolts which break at a temperature of about 120.degree., whereby said element is released, and during its tension release squeezes together the pipe line which has become plastic through heating.
Dependencies are inferred from the claim text.