Ball nut having adjustable preloading
CA 1196516 A · Owner: Kearney & Trecker Corporation · Inventors: Johnstone, Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A ball nut having adjustable preloading includes a first member comprising a first ball nut member for threaded engagement with a ball screw, a second ball nut element in threaded engagement with the ball screw adjacent to the first ball nut element, means securing the two ball nut elements to each other to prevent rotation of the elements relative to each other, means supporting the second ball nut element on a second member biasing means, arranged to urge the two ball nut elements in opposite directions for preloading the ball nut and adjusting means, coupled to regulate the biasing means for varying the preload pressure in accordance with the operating conditions.
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 November 12, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 12, 2002.
- 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.