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US 4,993,894 AGranted
Drill
Assigneefischerwerke Artur Fischer GmbH & Co. KG
InventorsArtur Fischer, Willi Haug
Life of this patent
Estimating the term…
Abstract
A drill for drilling holes in masonry and comprising a depth stop mounted on the drill shank and formed as a resilient anti-vibration element.
Claims8
A drill for producing drilled holes in masonry, comprising a drill shank;
- and a depth stop mounted on said shank and comprising a resilient anti-vibration element;
- a drill bit tip having lateral cutting edges projecting laterally beyond said shank;
- bulge means formed on said shank between said resilient anti-vibration element and said drill tip;
- a collar formed on said shank above said resilient anti-vibration element;
- and a bearing washer arranged between said collar and said resilient, anti-vibration element, said resilient anti-vibration element being ring-shaped and abutting said bearing washer.
2 more elements
Dependencies are inferred from the claim text.