Appeal No. 2003-0867 Page 9
Application No. 09/688,104
components are integrally cast with the frames. Also, part of an upper hinge is
integrally cast for attachment with a remaining portion of a corresponding vehicle
hinge. Upper and lower frames include U-shaped channel portions having
reinforcing webs and/or reinforcing brackets to increase bending stiffness and
provide a strong structure for the folding door.
Figure 1 shows a vehicle 20 having an upwardly folding door 22 that selectively
closes an opening 24 for accessing vehicle 20. Door 22 is shown in various operational
positions, including a closed position, a partially open position (shown in dashed
outline), and a fully open position. Door 22 includes an upper panel 26 pivotally
mounted to vehicle 20 about a horizontal pivot axis P1. Upper panel 26 is rotatingly
connected to a lower panel 28 about a second horizontal pivot axis P2 such that lower
panel 28 folds inwardly and upwardly relative to upper panel 26.
Figure 2 shows an exploded view of door 22 including an upper frame 60 for
receiving a pair of struts 30, an upper exterior panel 62, and a window panel 64. A
lower frame 66 pivotally connects to upper frame 60 at hinges 68. In addition, a lower
exterior panel 70 attaches to the exterior of lower frame 66. Junginger teaches (column
3, lines 54-58) that "[u]pper frame 60 can be made from any suitable material including,
for example, aluminum, magnesium, plastic, or steel. Preferably, upper frame 60 is
cast from magnesium to substantially reduce the weight of door 22 without sacrificing
structural integrity and strength." Junginger teaches (column 4, lines 32-36) that
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Last modified: November 3, 2007