Nib retaining assembly for a writing instrument
CA 1102739 A · Owner: Sanford Research Company · Inventors: Sherwood, Edward E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A nib retaining assembly for a writing instrument to hold a capillary writing element or nib of small cross-sectional dimension in position against writing pressure the nib retaining, assembly including a nib receiving main longitudinal passageway formed by offset portions through which the capillary element extends. The capillary element is held by light staking within an axial bore of a nib holder which, in turn is inserted into, a seat at one end of the passageway. Because of the passageway offset portions and an intermediate camming surface a capillary, element inserted into the passageway is deflected around an internal shoulder so as to be forced into frictional engagement with 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 June 9, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 1998.
- 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.