Platen clamping unit for an injection molding machine
CA 2418022 A1 · Owner: Krauss-Maffei Kunststofftechnik Gmbh · Inventors: Wohlrab, Walter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
To displace a mobile platen (3), a threaded spindle drive is inserted between the mobile platen (3) and a fixed platen (16) whereby one end of each , threaded spindle is mounted in the fixed platen (16) and is configured as a piston (9) of a hydraulic piston/cylinder unit. The pistons are mounted in the fixed platen (16) in hydraulic cylinders and an increased clamping force is created for the platen clamping mechanism by an appropriate impingement of the piston (9). In addition, the invention provides a detachable anti-rotation lock (23) for the threaded spindles (15). The invention thus allows an oblique position of the platens (3, 16) to be corrected by the targeted rotation of , …
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
- Filed August 21, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 21, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 21, 2023.
- 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.