Helically geared compound transmission
CA 2123932 C · Owner: Eaton Corporation · Inventors: Stine, Alan Charles; Reynolds, Joseph Douglas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A compound helically geared transmission (310) of lighter weight and/or shorter axial length than comparable prior art transmissions is provided. The compound helically geared transmission of the present invention utilizes main and, auxiliary section countershafts (324 362) which are coaxial and supported , solely by bearings in the transmission housing (316) forward and rearward end walls (316A, 316B). The mainshaft (362) is supported solely by tapered surfaces at the, forward and rearward ends thereof which abut complimentary tapered surfaces on, or carried by the rearward end of the input shaft (318) and forward end of the output shaft (358).
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 May 19, 1994 and granted November 2, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 19, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 19, 2016.
- 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.