Worm mower
CA 1297303 C · Owner: Wieneke, Franz · Inventors: Wieneke, Franz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a worm mower for cutting blade material of all types. The mower has a mowing worm that turns at a high peripheral speed and combines the following features: the helical angle (a) of the worm is less than the angle of friction (gliding angle) of the worm for the material to be cut. Moreover the, circumference of the worm features in the axial direction a continuous cutting surface that runs either parallel or at an angle to the axis of the worm or in a stepped fashion. The mower works with a clean cutting operation even at low speed.
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 March 17, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 17, 2009.
- 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.