Railway switches and signals – Block-signal systems – Automatic
Reexamination Certificate
2004-08-27
2008-11-18
Aftergut, Jeff H (Department: 1791)
Railway switches and signals
Block-signal systems
Automatic
C264S539000, C264S544000, C264S554000, C264S320000, C425S387100, C425S388000, C425S394000, C425S397000
Reexamination Certificate
active
07451952
ABSTRACT:
A section of a foil is sandwiched between an upper die and a first lower die and heat deformed into a cavity of the first lower die while simultaneously synchronously displacing the upper die, the first lower die, and the foil downstream. Then the upper die is raised and recirculated back upstream while cooling the section of foil in the cavity of the first lower die and displacing the lower die with the section of the foil downstream. Another section of the foil is sandwiched between the upper die and a second lower die and heat deformed into a cavity of the second lower die while simultaneously synchronously displacing the upper die, the second lower die, and the foil downstream. The first lower die is disengaged from the foil in the downstream station and recirculated back upstream to the upstream station. These steps are then repeated.
REFERENCES:
patent: 3562859 (1971-02-01), McIntyre
patent: 4666394 (1987-05-01), Wakamiya et al.
patent: 4883419 (1989-11-01), Queirel
patent: 5980231 (1999-11-01), Arends et al.
patent: 2 409 684 (2003-05-01), None
patent: 625 742 (1981-10-01), None
patent: 81 15 644 (1982-11-01), None
Damaschke Norbert
Eck Werner
Florczak Werner
Aftergut Jeff H
Uhlmann Pac-Systeme GmbH & Co. KG
Wilford Andrew
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