Method and apparatus for making steering rack bars
CA 1204005 A · Owner: Bishop, Merrill E. · Inventors: Scott, David W.; Roeske, Klaus J.; Bishop, Arthur E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A die for forming a Y-form rack portion of a steering rack bar from a blank by forging in which the die has at least three forming elements relatively movable on application of forging pressure to the die to converge on a blank therein, a first of the forming elements having in it cavities the shape of which corresponds to the shapes of the teeth to be formed, second and third forming elements having forming faces to form longitudinal guide faces on the Y-form rack portion on the side thereof opposite the teeth. The three forming elements are shaped and arranged to move together to converge on the blank to transform it into the final form in such a manner as to inhibit escape of 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
- Granted May 6, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 6, 2003.
- 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.