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Expired Canadian patentCanada

Face gear transmission

CA 1269871 C · Owner: Kuiken, Hendrik · Inventors: Kuiken, Hendrik

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Face-gear transmissions have been used hitherto only for secondary applications, with little running hours and low loads. They form a type of underdeveloped angle transmissions. When analysing said underdevelopment it was surprisingly found that well-known gear theory had not been applied correctly. Especially the teeth-tip-height can be increased considerably in the region where the face-gear teeth have increased pressure angles resulting, in considerably increased loading capacity and meshing quotient all based on meshing cooperation with standard cylindrical gears with either straight (spur) or helical teeth. The angle between the transmission shafts may be 90°, less or over the shafts …

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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 June 5, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 5, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 3, 1986
GrantedJune 5, 1990
Term endedJune 5, 2007
Patent numberCA 1269871 C
Classification (IPC)F16H1/12 +1 more

Timeline

Timeline From CIPO dates

1987199019931996199920022005Application filedDec 3, 1986Patent grantedJune 5, 1990Term endedJune 5, 2007

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.