Endless tape videocassette structure
CA 2177156 A1 · Owner: Harrises, Chris · Inventors: Harrises, Chris; Ballard, Samuel; Saunders, Roger
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An endless tape videocassette (10) is provided which is relatively inexpensive to manufacture while providing a relatively long serpentine path (A, B, C A', B' C') for the, tape (40), maintaining at least some tension (22 24, 28) on, substantially all portions of the tape when the cassette is in its operative or play state, and preferably also when the cassette is in its inoperative state, and which assures that there is substantially no intertape contact and no significant contact between the tape and static surfaces when the tape is being played Systems (64-69) are also provided to utilize an endless tape videocassette (10) for the continuous play of an audiovisual clip and/or for 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
- Filed November 22, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 22, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 22, 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.