Rotatable drive element for moving a window covering
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United States of America Patent
Stats
-
Dec 29, 2020
Grant Date -
Jun 29, 2017
app pub date -
Feb 22, 2017
filing date -
Sep 17, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A curtain assembly comprises a rotatable drive element wherein at least one helical guide structure is formed on, or into, the outer surface of the drive element. A drive attachment element having a structure that communicates with the helical guide structure to move the drive attachment element axially along the drive element when the drive element is rotated. Specific embodiments incorporate either a manual or motor-driven rotation assembly for rotating the drive element. Further specific embodiments involve a helical guide structure that comprises a helical groove and a structure that comprises a tooth that engages with the helical groove.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2017 Application Filing Year
- B23Q Class
- 705 Applications Filed
- 514 Patents Issued To-Date
- 72.91 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 3 Citation Count
- B23Q Class
- 58.38 % this patent is cited more than
- 5 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jun 29, 2028 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jun 29, 2032 |
