Back to results
US 6,643,985 B2Granted
Tubular lead-in fixture
AssigneeHilti Aktiengesellschaft
InventorHerbert Münzenberger
Life of this patent
Estimating the term…
Abstract
A tubular lead-in fixture including an attachment element (3) for a temporary attachment of the lead-in fixture, and an axially extending, radially widening region (8) provided within an embeddable length (L) of the lead-in fixture (1) and limited by spaced from each other, radial shoulders, and in which an intumescent mass (7) is received.
Claims9
A tubular lead-in fixture for a conduit (2), comprising attachment means (3) for a temporary art attachment of the lead-in fixture (1) to a formwork (4) of a subsequently formed of concrete, wall (6);
- intumescent mass (7) located within lead-in fixture coaxially therewith;
- and an axially extending, radially widening region (8) provided within an embeddable length (L) of the lead-in fixture (1) an axially limited by spaced from each other radial shoulders for receiving the intumescent mass (7) therein, wherein the lead-in fixture is formed of at least two, undercut-free sections.
Dependencies are inferred from the claim text.