Press system for reaction injection moulding
CA 2300860 A1 · Owner: Wallace, Keith · Inventors: Mcnally, Douglas J.; Wallace, Keith
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The mold press includes a drive arrangement for controlling press movement and closure force. The drive arrangement includes a pair of generally identical drive units (76) connected between upper and lower press plates (36 51) , adjacent opposite longitudinal ends of the press. The drive units (76) in a preferred embodiment each employ a ball-screw drive arrangement (71). The screw shaft (74) extends vertically between the top and bottom press plates. A screw shaft engages a ball nut mounted on one press plate typically the , bottom press plate (51) which is disposed for movement toward and away from the top press plate (36). A first high speed drive arrangement employing a first …
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 19, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 19, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 19, 2020.
- 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.