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United States of America Patent

APP PUB NO 20100192477A1
SERIAL NO

12690335

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A platform system includes swing arms for moving the platform from a lowered position to a raised position. In one embodiment, a pair of swing arms and a pair of telescoping vertical members are mounted to opposing frame members. The swing arms are capable of moving from a canted position to a vertical position, which extends the telescoping vertical members and raises the platform to the raised position. The swing arms are connected to a drive mechanism that moves the swing arms from the canted position to the vertical position. The drive mechanism may include a gear box, and a pair of lead screws connected to the gear box. The lead screws may extend from opposing sides of the same gear box, with the gear box configured to rotate the differently handed lead screws.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
IRWIN SEATING COMPANY3251 FRUIT RIDGE N W GRAND RAPIDS MI 49504

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Heatherington, David W Spring Lake, US 20 514
Plumert, Terry L Grand Haven Twp., US 5 235
Rupar, Dennis V Spring Lake, US 9 223
Southwell, David R Grand Rapids, US 2 17
van, de Ven Michiel P West Olive, US 28 2957
Walwood, John W Grand Haven, US 4 43
Wisner, Donald W Grand Haven, US 12 270

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