Non-circular vent pin for golf ball injection mold and golf ball formed therefrom
CA 2426340 A1 · Owner: Shannon, Kevin J. · Inventors: Tavares, Gary; Kennedy, Thomas J. Iii; Shannon, Kevin J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved vent pin for a golf ball injection mold is characterized by a noncircular configuration so that a non-circular dimple (P) can be formed at one or both poles of the golf ball. The vent pin is coaxially arranged within a passage in the injection mold which is aligned with a radius of the ball which passes through one of the poles thereof. The pin is operable between a normal position where the end of the pin closes the passage lower end and a retracted position where the pin end is withdrawn into the passage so that air from a cavity of the mold where the cover layer of the ball is formed can be vented during delivery of thermoplastic material to the cavity to form the golf …
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 October 18, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 18, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 18, 2023.
- 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.