Structures for screen tensioning and printing
CA 2095248 A1 · Owner: Newman, Donald E. · Inventors: Newman, Donald E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A screen tensioning and printing frame (10) having a plurality of rollers (12, 22, 26) coupled at their ends to corner members (14, 24). Each roller is also coupled to one edge portion of a screen material. The screen is tensioned by the rotation of the rollers about their longitudinal axis. Each roller includes at least one end plug (42) having a series of engagement surfaces (48 50), for causing rotation of the roller and a corresponding screen tension. The engagement surface being substantially elongated in the axial direction to increase the strength of the end plug upon rotation thereof by a wrench or the like.
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 October 2, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 2, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 2, 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.