Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With means between charger and mold to cut off flow of...
Reexamination Certificate
2008-03-25
2008-03-25
Heitbrink, Tim (Department: 1791)
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With means between charger and mold to cut off flow of...
Reexamination Certificate
active
07347684
ABSTRACT:
An actuator for a valve pin of an injection molding apparatus includes an adjustment piece coupled to a valve pin via a connector and axially movable relative to a piston to adjust an axial position of the valve pin relative to a mold gate. A removable locking device restricts axial movement of the adjustment piece with respect to the piston. An indicator is provided for determining the position of the valve pin relative to a mold gate based on the position of the adjustment piece with respect to the piston. An anti-rotation device is provided to inhibit rotational movement of the valve pin. During maintenance, the actuator piston and adjustment piece may be extracted with or without the valve pin. The actuator may be reassembled with correct axial position via the piston/adjustment piece relationship and correct rotational position of the valve pin via the anti-rotation device.
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HRS Flow HotRunner Technology document entitled “Adjustable Cylinder” (dated Aug. 20, 2004).
Five (5) photographs of piston sample from Weber-Formenbau first shown at Fakuma Show held on Oct. 14, 2003 in Friedrichshafen, Germany.
Babin Denis
Tabassi Payman
Heitbrink Tim
Mold-Masters (2007) Limited
Ridout & Maybee LLP
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