Hammer drill with separate and interconnectable drive means
CA 1248782 A · Owner: Hilti Aktiengesellschaft · Inventors: Neumaier, Anton; Hoereth, Hans-Jurgen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hammer drill includes a first unit for supplying impact force to a tool inserted in such a hammer drill and a second unit for supplying rotational force to such a tool. A first drive motor drives the impact force unit and a second drive motor drives the rotational force unit. The motors can be operated independently of one another. A first drive train interconnects the first drive motor to the impact force unit and a second drive train interconnects the second drive motor and the rotational force unit. A coupling device interconnects the first and second drive trains so that at least one of the impact force unit and the rotational force unit can be selectively driven by both the first and …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted January 17, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 17, 2006.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.