Brakes – Internal-resistance motion retarder – Using magnetic flux
Reexamination Certificate
2011-07-12
2011-07-12
Williams, Thomas J (Department: 3657)
Brakes
Internal-resistance motion retarder
Using magnetic flux
C267S131000, C248S588000
Reexamination Certificate
active
07975813
ABSTRACT:
A suspension system for a seat assembly of a machine includes an upper support member and a lower support member. A pair of scissors linkages interconnect the upper and lower support members. Each of the scissors linkages includes first and second arms pivotably attached at central portions thereof. An electronic controller is in communication with a pair of electromagnetic devices positioned at first ends of the first arms. The electronic controller is configured to energize the electromagnetic devices in response to a sensor output.
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Translation of JP 09-79319 A, Huiga et al., Mar. 1997, from JPO website.
Catton Jonathan Chase
Spangler John
Striegel Alexander
Caterpillar Inc.
Liell & McNeil
Williams Thomas J
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