Separable three-section telescopic drive shaft
CA 1103471 A · Owner: Walterscheid (Jean) G.M.B.H. · Inventors: Geisthoff, Hubert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a separable three-section telescopic drive shaft such as used for driving an agricultural implement the shaft, consists of an inner section and a tubular outer section with, a tubular intermediate section located between then in the retracted position of the shaft. A locking ball is radially movably supported within a cut-out in the intermediate section and is engageable in a recess in one of the inner and outer sections in the retracted position of the shaft and in a recess in the other of the inner and outer sections in the extended position of the shaft. A cover is attached to one end of the intermediate member and a control disc is slidably positioned within the intermediate member. …
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 June 23, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 23, 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.