Print tip contact sensor for quiet impact printer
CA 1269339 C · Owner: Dunfield, John C. · Inventors: Bowers, George W. Jr.; Dunfield, John C.; Crystal, Richard G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An impacting element for an impact printer having a platen selectable, character elements and means for driving the impacting element to impart a printing force to a selected character element to drive it against said platen, for a contact period the impacting element including a sensor thereon for generating a signal indicative of the initiation of the contact period.
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 May 22, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 22, 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.
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.