DOOR CLOSER

Number of patents in Portfolio can not be more than 2000

United States of America Patent

APP PUB NO 20190024428A1
SERIAL NO

15698778

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A door closer pivoted on a door at least includes a case and a piston. When the door is open, the door closer blocks a communicating hole of the case by an oil sealing ring of the piston to allow an oil filled in the door closer cannot flow through the communicating hole. As a result, the open door can be held in a predetermined position.

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Patent Owner(s)

Patent OwnerAddress
ARCTEK INDUSTRIAL CO LTDBEIDOU TOWNSHIP CHANGHUA COUNTY 52149

International Classification(s)

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  • 2017 Application Filing Year
  • E05F Class
  • 724 Applications Filed
  • 534 Patents Issued To-Date
  • 73.76 % Issued To-Date

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Su, Wen-Yuan Changhua County, TW 5 10

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Patent Citation Ranking

  • 0 Citation Count
  • E05F Class
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  • 6 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges109193501 - 1011 - 200102030405060708090100110120130140150160170180190200210

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