Disposable cup lid with tear tab and gripping means for the tear tab
CA 1324342 C · Owner: Heath, James E. · Inventors: Smith, J. Bradley; Heath, James E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns lids for disposable drinking cups. A circular cup lid having a peripheral lip to engage a rim of a drinking cup has a minor section forming a tear back strip. That portion of the lip in the tear back sector which is arcuate in form is engagable in a generally straight groove in the lid to hold the tear back strip in open position. The engagement of an arcuate lip portion in a straight groove may provide extra gripping force in the groove. The tear tab need not have perforated or other physically formed tear lines but may be defined only by orientation lines in the plastic material of the lid.
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 November 16, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 16, 2010.
- 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.