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The Pentaject Corporation Patents
The Pentaject Corporation
Algonquin, IL
No. of patents:

Patent Number Title Of Patent Date Issued
4150931 Injection molding apparatus with quick change molds April 24, 1979
Three molds are formed with bayonet-type couplings adapted to interlock releasably with bayonet-type sockets in a holding plate to enable the molds to be quickly attached to and released from the holding plate. A key fits releasably into keyways in the molds and holds all three molds
4111633 Mechanism for opening the molding dies of an injection molding machine September 5, 1978
Molding units each having upper and lower molds are indexed through an injection station and then into an opening station. At the opening station, the lower mold of each unit first is opened and then is closed relative to the upper mold, the opening and closing of the lower mold bein

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