Footrest extension device, frame and chair having the same

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11617446
APP PUB NO 20220039558A1
SERIAL NO

17333014

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Importance

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Abstract

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A footrest extension device for a chair includes eight connecting rods: a first connecting rod is connected to a main frame, and pivotally connected to a second connecting rod and a third connecting rod, respectively; the second connecting rod is connected to the main frame, and pivotally connected to a fourth connecting rod; the third connecting rod is pivotally connected to the fourth connecting rod, a sixth connecting rod and a eighth connecting rod, respectively; a fifth connecting rod is pivotally connected to the fourth connecting rod and the sixth connecting rod, respectively; the sixth connecting rod is pivotally connected to a seventh connecting rod; the seventh connecting rod is pivotally connected to the eighth connecting rod; and the second connecting rod, driven by a driving device, drives the other connecting rods to move, so the footrest extension device is folded or extended.

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Patent Owner(s)

Patent OwnerAddress
ZHANG XIAOZHAO233200 NO 10 TAOYUAN GROUP QINGCHUN VILLAGE SANGJIAN TOWN DINGYUAN COUNTY CHUZHOU CITY ANHUI PROVINCE CHUZHOU CITY ANHUI PROVINCE 233200

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Zhang, Xiaozhao Chuzhou, CN 9 22

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