4-jaw work holding chucks
CA 1069287 A · Owner: Smith, Bernard · Inventors: Smith, Bernard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A 4-jaw work holding chuck the jaws of which are adjustable in oppositely disposed pairs each pair of jaws, being adjustable towards or away from each other simultaneously by a respective one of a pair of adjusting screws. A sleeve is located on at least one end of at least one of the adjusting screws between that screw and the associated jaw. The sleeve is internally screw threaded so as to engage the screw thread at the aforementioned end of its associated screw. The sleeve is externally screw threaded to engage the associated jaw, so that rotation of the sleeve provides a differential adjustment of its associated jaw relative to the opposite jaw independent of the adjusting screw.
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 January 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 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.