Dental handpiece
CA 1056627 A · Owner: Flatland, Lloyd P. · Inventors: Flatland, Lloyd P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure An air driven dental handpiece has a housing defining a rotor chamber and also defining an inlet duct leading into the chamber as well as an outlet duct opening from the chamber. There is a spindle mounted in the housing for rotation in the chamber about an axis. A rotor in the chamber is fast on the spindle. The rotor has a hub engaging the spindle and extending for a predetermined axial distance A rotor web extends, radially from the hub and is axially shorter than the hub. Blades extend radially from the web and are axially longer than the web to leave annular cutaway portions on opposite sides of the rotor between the hub and the blades.
Read the whole patent
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 June 19, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 19, 1996.
- 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.