Locking device for window or door and method of operating thereof

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11927038
APP PUB NO 20220042357A1
SERIAL NO

17385640

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A locking device for a window or a door, wherein the window or the door has a sash slidable in a horizontal direction within a frame. When a user turns on a switch to control a block to move from the first position to the second position, the block protrudes out of a vertical surface of the sash, thereby driving a linkage member to disengage from the frame. At this time, the user could hold and push the block in the horizontal direction to move the sash between a third position and a fourth position. When the sash is pushed back to the third position, the block could be controlled to move back to the first position, namely back to a mounting groove, thereby moving the linkage member to a position where the linkage member is engaged with the frame. A method of operating thereof is provided as well.

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First Claim

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Family

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Patent Owner(s)

  • SHANG TIAN ALUMINUM CO., LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Wu, Lu-Chien Changhua County, TW 1 0

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Maintenance Fees

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3.5 Year Payment $1600.00 $800.00 $400.00 Sep 12, 2027
7.5 Year Payment $3600.00 $1800.00 $900.00 Sep 12, 2031
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Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00