Plastic article or earthenware shaping or treating: apparatus – Preform reshaping or resizing means: or vulcanizing means... – Coacting shaping surfaces
Reexamination Certificate
2007-06-12
2007-06-12
Gupta, Yogendra N. (Department: 1722)
Plastic article or earthenware shaping or treating: apparatus
Preform reshaping or resizing means: or vulcanizing means...
Coacting shaping surfaces
C425S403100, C425S411000, C425S422000, C425S443000, C264S334000
Reexamination Certificate
active
11155720
ABSTRACT:
A tooling system in a press for forming a product from a blank of material disposed between a punch assembly and a die assembly and a method of using the same. The tooling system comprises a knockout and a bushing. The knockout further comprises a shaft having opposed ends, a plate fixed to one opposed end, and a tapered portion. The bushing is supported by one of the punch and die assemblies and defines a lumen configured to slidably receive the shaft for axial movement between an extended position and a retracted position. The lumen has a tapered receiving section at one end thereof configured to mate with the tapered portion of the knockout when the shaft is in the extended position.
REFERENCES:
patent: 4755128 (1988-07-01), Alexander et al.
patent: 4832676 (1989-05-01), Johns et al.
patent: 6139307 (2000-10-01), Plourde et al.
patent: 6261082 (2001-07-01), Han
patent: 6589043 (2003-07-01), Johns et al.
Johns Albert D.
Sofronie Mircea T.
Dixie Consumer Products LLC
Georgia-Pacific LLC
Gupta Yogendra N.
Hutter Jacqueline M.
Nguyen Thu Khanh T.
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