Land vehicles: bodies and tops – Bodies – Door or window with specified vehicle feature
Reexamination Certificate
2011-01-11
2011-01-11
Pape, Joseph D (Department: 3612)
Land vehicles: bodies and tops
Bodies
Door or window with specified vehicle feature
C049S502000, C052S784100
Reexamination Certificate
active
07866730
ABSTRACT:
The present invention is a twinsheet door which includes a first door portion and a second door portion connected to the first door portion. The twinsheet door of the present invention is manufactured using a thermoforming process, during which a vacuum shapes the first door portion and the second door portion such that one or more closed sections are created when the first door portion is thermally bonded to the second door portion and simultaneously a vacuum is applied to form the first door portion and said second door portion. The closed section formed between the first door portion and second door portion provides additional strength and rigidity to the twinsheet door. Additionally, the forming of the closed section between the first door portion and the second door portion and the bonding between the first door portion and second door portion is achieved during a single manufacturing process.
REFERENCES:
patent: 5000990 (1991-03-01), Freeman
patent: 7216926 (2007-05-01), Hampel
Huotari Keijo J.
Junkin Duane C.
Klem Christopher S.
Lewis Stephen J.
Milani Adolf Enrico
Luddy Marc
Magna International Inc.
Pape Joseph D
Warn Partners P.C.
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