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US 2018/0257153 A1Published application
Keyhole saw
AssigneeHilti Aktiengesellschaft
InventorsMaximilian SIRCH, Helmut HAPPACH, Herbert MUENZENBERGER
Life of this patent
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Abstract
A tool for creating a wall opening. The tool includes a hole saw; and a centering jig having a center axis, where the centering jig is constructed as a centering ring, into which the hole saw can be pushed at least partly, and in that both the hole saw and the centering ring have on their circumference an opening such that this can be pushed transverse to the center axis completely onto a line.
Claims10
A tool for creating a wall opening, the tool comprising:
- a hole saw:
- and
- a centering jig having a center axis, wherein
- the centering jig is constructed as a centering ring, into which the hole saw can be pushed at least partly, and in that both the hole saw and the centering ring have on their circumference an opening such that this can be pushed transverse to the center axis completely onto a line.
1 more element
Dependencies are inferred from the claim text.