Apparatus for mounting gear segments
CA 2094579 C · Owner: Harnischfeger Technologies, Inc. · Inventors: Kallenberger, Harvey J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is an improvement in a gear assembly having a gear segment attached to a spider. The improvement comprises a pair of spaced spider webs and a segment-attached mounting member received between the webs. The mounting member has a pair of spaced plates one plate against each web. Each of a group of tube-like generally cylindrical segment coupling members extends between a particular web and its adjacent plate while each of another group of coupling members extends between the other web and its adjacent plate. The coupling members of a group are in opposed relationship to corresponding coupling members of another group. A boltlike retaining member extends through each pair of …
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
- Filed April 21, 1993 and granted January 14, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 21, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 21, 2015.
- 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.