Damping stops for hydraulic jacks
CA 1182056 A · Owner: Inventio Ag · Inventors: Ach, Ernst
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is primarily used in hydraulic elevators or lifts or the like. A damping stop is arranged at a head end of a hydraulic jack in the form of a bushing made of a synthetic material, typically plastics. The purpose of this bushing is to damp movement at the upper travel limit of the elevator which corresponds to the stopping point of the elevator or lift cabin at the upper end of its travel. The synthetic material bushing is compressed between a flange of a piston and a lower abutment or contact surface at a cylindrical insert of the jack until the internal pressure assumes a predetermined value. For uniform deformation of the synthetic material bushing over its entire …
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 February 5, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 5, 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.