B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 45/23 (2006.01) B29C 45/28 (2006.01)
Patent
CA 2065617
ABSTRACT OF THE DISCLOSURE An adjustable valve stem apparatus 10 adapted for use in an injection molding equipment or device comprises a cylindrical body 12 comprising internally threaded fixed portion 14 and moveable portion 16 threadably mounted on a double-ended screw 30. The fixed and moveable portions 14,16 are relatively oppositely threaded with threads of essentially equal pitch. Moveable portion 16 has a means 26 for removably mounting a valve stem 28 which communicates with a mold cavity. The double-ended screw 30 has a socket 38 formed in its top portion for adjusting the moveable portion 16 relative to the fixed portion 14 thereby correspondingly axially displacing the valve stem 28 from a first to second position relative to the workpiece. In a preferred embodiment, the apparatus 10 may be adjusted from the outside of the injection molding equipment, where equipment uptime is critical to the operation.
Berg Ralph Olivier
Kupka Dennis Bernard
Lang Fred John Jr.
Eastman Kodak Company
Gowling Lafleur Henderson Llp
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