Window shade assembly
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United States of America Patent
Stats
-
Jul 13, 2021
Grant Date -
Nov 14, 2019
app pub date -
Jan 11, 2019
filing date -
May 11, 2018
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A window shade assembly includes a top box with two end members respectively connected to two ends of the top box, a shaft, a shade and a scrolling unit. The scrolling unit is received in the shaft and located between the two end members. The scrolling unit includes two end parts, a head, a spring and a movable member. By rotating the head to activate the spring to store a scrolling force, such that when pulling the shade, the end part drives the shaft to rotate and lower the shade. The spring does not pulls the shade upward and keeps its scrolling force at a level. When the shade is pushed upward, the shade is lifted automatically.
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Family
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Cited Art Landscape
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