Injection mold friction puller
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United States of America Patent
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Oct 18, 2011
Grant Date -
Oct 22, 2009
app pub date -
Apr 21, 2008
filing date -
Apr 21, 2008
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A friction puller for an injection mold is disclosed. The friction puller has a bolt with a head portion and a threaded portion. The friction puller has first and second first substantially hemispherical wedges having a first and second passages running through them for the bolt and allow lateral float about the bolt. The friction puller also has a deformable jacket having a third passage running through is for the bolt and first and second substantially hemispherical cups for receiving the first and second substantially hemispherical wedges. The first hemispherical wedge can have a vent relief notch disposed in a top surface of the first hemispherical wedge. The deformable jacket can have a jacket vent notch disposed in a top surface of the deformable jacket. The bolt head and the jacket can have alignment indicator marks thereon. The bolt threads can have a variable pitch diameter.
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