Fastener plunger entry resistance means
CA 1083788 A · Owner: Hartwell Corporation · Inventors: Poe, Lloyd R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fastener is disclosed which is adapted to be secured in a perforated member. The fastener comprises a grommet having a sleeve portion with an entry end and a set of fingers continuing from its other end; a plunger having an expander portion slidable through the sleeve portion to engage inwardly inclined surfaces on said fingers and expand the fingers, and a radially contractable ring of normally greater diameter than the inside of said sleeve and spaced from said expander portion a distance no greater than the distance from said entry end to said inclined surfaces and thereby being engageable with the sleeve portion prior to expansion of the fingers by the expander portion, whereby the …
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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
- Granted August 19, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 19, 1997.
- 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.