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US 4,476,083 AGranted
Pivot mold assembly method
OwnerJohn W. von Holdtinventor
Life of this patent
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OwnerJohn W. von Holdtinventor
Estimating the term…
The following specification describes a stop boss formed on the handle of a pail by means of a pair of slides located behind a skirt wall of the pail with the handle passing through a slot in the skirt wall, which is closed by a flange wall formed by the slides. The slides are movably carried in guides by a ring member and are received in a recess of another ring member which conventionally forms the annular pail wall. The guides enable the slides to move laterally toward each other in response to downward movement of the carrying ring member, to define the cavities for forming the stop boss and the flange wall closing the skirt wall slot. On completion of the mold cycle and upward movement of the ring member carrying the slides, the guides move the slides laterally apart to release the stop boss and the flange wall. The slides are then moved from between the skirt and pail walls to enable the pail to be released from the mold.
A method for forming a retaining portion comprising first and second molded walls about a freely pivotable member extending through a passage formed in said first molded wall to occupy a position intermediate said first wall and second molded wall, said second molded wall being spaced from said first wall and integrally interconnected with said first wall at a plurality of positions spaced circumferentially about said pivotable member, to define a recess between said first and second walls, comprising the steps of:
A method for forming a pail having a freely rotatable handle in a mold defining a pair of ring members arranged for relative axial movement therebetween to define an annular wall portion of said pail, the improvement comprising the steps of:
Dependencies are inferred from the claim text.