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US 4,792,185 AGranted
Seat device
AssigneeIkeda Bussan Co., Ltd.
InventorYoshitoshi Oshikawa
Life of this patent
Estimating the term…
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AssigneeIkeda Bussan Co., Ltd.
InventorYoshitoshi Oshikawa
Estimating the term…
A seat device having a cushion supported to be movable up and down to damp vibration, characterized in that the seated portion of the cushion is divided into front, center and rear parts which are connected bendably with one another, that one of the front and rear parts of the seated portion is pivoted on a fixed member while the other is swingably and slidably supported by a fixed member, that swinging arms are projected downward from the front and rear parts of the seated portion, and that a cushion spring for urging the center part of the seated portion upward is stretched between the front ends of the swinging arms.
A seat device comprising:
A seat device comprising:
Dependencies are inferred from the claim text.
Term ended 10 Jun 2007 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
1. Field of the Invention
The present invention relates to a seat device for supporting the cushion movable up and down to damp vibration.
2. Prior Art
FIG. 1 is a perspective view showing main portions of a seat device.
FIG. 2 is a perspective view showing a seat.
FIG. 3 is a perspective view showing the seat device developed.
An embodiment of the present invention will be described with reference to the accompanying drawings.
As shown in FIG. 2, a seat 10 comprises a cushion 20 and a seat back 11 erected from the rear end of the cushion 20. The cushion 20 comprises a seated portion 22 which is triple-divided to front, center and rear parts 30, 40 and 50 between side portions 21.
As seen in FIGS. 1, 3 and 4, the front part 30 includes a front pad 31 and a front frame 32 for supporting the front pad 31, the center part 40 includes a center pad 41 and a center frame 42 for supporting the center pad 41, and the rear part 50 includes a rear pad 51 and a rear frame 52 for supporting the rear pad 51. The front, center and rear frames 32, 42 and 52 form a cushion frame 23, which is supported by a seat base 60.