Elevator car roller guide and method of use
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United States of America Patent
Stats
-
May 26, 2020
Grant Date -
Dec 7, 2017
app pub date -
Dec 14, 2015
filing date -
Dec 17, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A roller guide for an elevator car includes at least one roller rotatably mounted on an axis. The roller guide further includes a support element for supporting the axis, and at least one braking element for the roller for damping vertical oscillations of the elevator car. The brake element is a magneto-rheological fluid.
First Claim
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International Classification(s)
- 2015 Application Filing Year
- B66B Class
- 423 Applications Filed
- 331 Patents Issued To-Date
- 78.26 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- B66B Class
- 54 % 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 | Nov 26, 2027 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 26, 2031 |
