Tape measure end hook
CA 2018963 C · Owner: Cooper Industries, Inc. · Inventors: Knapp, Ralph Edward
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A floating end hook for a measuring tape is disclosed which defines two openings for receipt of first and second rivets for attachment of the end hook to the measuring tape. The openings lie on an axis parallel to an inside surface of an abutting member of the end hook. The positioning of the openings allows the force produced when the end hook impacts the measuring tape housing to be approximately evenly distributed between the first and second rivets. A third opening for receipt of a third rivet may be located on the end hook a predetermined distance from the axis on which the other two openings lie. The third opening prevents the end hook from twisting and further ensures that 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 June 13, 1990 and granted November 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 13, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 13, 2012.
- 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.