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US 2005/0244244 A1Published application
Sprue dowel
AssigneeHilti Aktiengesellschaft
InventorThomas Ayrle
Life of this patent
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Abstract
A sprue dowel has a radially projecting embeddable portion (12) and an attachment portion (21) formed as a hollow cylindrical shaft (24) provided with a plurality of spaced from each other, furrowed retaining projections (26, 27) formed on an outer circumference of the shaft and extending parallel to a longitudinal axis (25) of the sprue dowel (11).
Claims15
A sprue dowel, comprising a radially projecting, embeddable portion (12);
- an attachment portion (21) formed as a hollow cylindrical shaft (24);
- and a plurality of spaced from each other, furrowed retaining projections (26, 27) provided on an outer circumference of the shaft (24) and extending parallel to a longitudinal axis (25) of the sprue dowel (11).
Dependencies are inferred from the claim text.