Metal working – Method of mechanical manufacture – Obtaining plural product pieces from unitary workpiece
Patent
1987-08-18
1988-09-27
Rosenbaum, Mark
Metal working
Method of mechanical manufacture
Obtaining plural product pieces from unitary workpiece
29416, 29434, 206527, 264152, 264536, B23P 1100
Patent
active
047731478
ABSTRACT:
A method of manufacturing blow molded plastic cases of the type comprising two hollow hinged containers where at least one of the containers has a compartment, and a door for the compartment is presented. The method allows the manufacture of compartment doors as part of an integrated manufacture without requiring a separate blow molding step to make the door. The method comprises blow molding a standard size door as one face of a first hollow container, in an area of the container which would otherwise be cut out and discarded, removing the door from the container, storing the door for future use, and assembling the first hollow container with a second blow molded hollow container to make a first case. A third and fourth hollow container are blow molded, and an area sized to accommodate the door stock is cut from the third container. The door is retrieved from stock and mounted in the third hollow container. The third and fourth hollow containers are then assembled together to form a second case having a compartment and a compartment door.
REFERENCES:
patent: 4103411 (1978-08-01), Gottsegen
patent: 4179790 (1979-12-01), Tornerfelt
patent: 4615464 (1986-10-01), Byrns
patent: 4621404 (1986-11-01), Browning
Chin Frances
Rosenbaum Mark
The Plastic Forming Company, Inc.
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