Step ladder

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11220862
APP PUB NO 20200224492A1
SERIAL NO

16834561

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A ladder including a first frame, a second frame and a platform assembly. The first frame includes one or more fixed steps. The platform assembly includes a first platform pivotably coupled to the first frame, a second platform pivotably coupled to the first frame, a first linkage coupled between the second frame and one of the first platform and the second platform, and a second linkage coupled to the first platform and the second platform. The ladder is movable between a closed position and an open position.

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First Claim

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Patent Owner(s)

  • TRICAM INDUSTRIES INC.

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lu, Yongxue Shanghai, CN 5 65
Simpson, Dennis D Plymouth, US 31 274
Skubic, Jeff Eden Prairie, US 8 93
Williams, Ben Chaska, US 18 205

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