Device for safeguarding an open position of the closing unit...

Details Device for safeguarding an open position of the closing unit... Device for safeguarding an open position of the closing unit...

2007-02-20

2007-02-20

Heitbrink, Tim (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

With safety feature

C425S153000

Reexamination Certificate

active

10325679

ABSTRACT:
Injection molding machines must be provided with devices which ensure that the mold mounting plates when in open position cannot inadvertently close, wherein the conventional safety devices include a toothed locking bar disposed between two mold mounting plates and are provided with a ratchet mechanism, but which obstructs accessibility in the space between the two mold mounting plates, so that according with the present invention a blocking unit is disposed outside the space between two mold mounting plates for engagement of the drive unit of the closing unit to thereby prevent an inadvertent closure.

REFERENCES:
patent: 3728057 (1973-04-01), Grundmann et al.
patent: 5834036 (1998-11-01), Ueno
patent: 6164947 (2000-12-01), Miyahara
patent: 138 750 (1979-11-01), None
patent: 30 42 712 (1982-06-01), None
patent: 01 087321 (1989-03-01), None

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