Sheet feed tractor
CA 1080266 A · Owner: Data Motion · Inventors: Seitz, Alan F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A drive tractor of the type usually mounted in pairs at opposite edges of a web of edge-perforated sheet material such as printout paper has an endless drive belt mounted on a chassis. The drive belt has pin members projecting from it to engage edge perforations in the web and is engaged with a drive wheel having sprocket teeth which engage a drive formation on the inner surface of the belt. The sprocket wheel is engaged by a drive shaft to be driven thereby. The sprocket teeth and belt tread are respectively configured to mesh only in a predetermined relative position of the pin members relative to the rotational position of the drive wheel. The drive wheel is configured to seat on the …
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 24, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 24, 1997.
- 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.