Constant gap document feeder and method of operation thereof
CA 2106684 C · Owner: Guthmueller, Rodney · Inventors: Ogles, Jimmy; Hosiner, Walter; Rajagopal, Ganesh
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A controller (25) ensures a desired constant gap between a trailing edge of a first document and a leading edge of a subsequent document. The controller (25) decreases the speed of a feeder transport (22) upon the detection of a leading edge of a first document at an entrance to a take-away transport (24). The controller (25) then linearly increases the speed of the feed transport (22) along a speed ramp (R) until a trailing edge of the first document is detected. Upon the detection of the trailing edge of the first document, the controller (25) sets the speed of the feeder transport (22) to a constant value (S4). Thereafter the controller (25) detects a leading edge of the subsequent …
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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 March 21, 1991 and granted June 15, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 21, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 21, 2013.
- 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.