Crane
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 28, 2020
Grant Date -
Dec 15, 2016
app pub date -
Aug 26, 2016
filing date -
Feb 26, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
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Abstract
The present invention relates to a crane, in particular to a revolving tower crane, having a boom rotatable about an upright slewing gear axis by a slewing gear drive and having an out-of-operation brake which allows and brakes rotary movements of the boom in the out-of-operation state. In accordance with the invention, the out-of-operation brake is configured as working electrodynamically and comprises an electric motor of the slewing gear drive which can be operated as an electric-motor brake.
First Claim
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Family
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International Classification(s)
- 2016 Application Filing Year
- B66C Class
- 375 Applications Filed
- 297 Patents Issued To-Date
- 79.20 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- B66C Class
- 62.45 % 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 | Oct 28, 2027 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Oct 28, 2031 |
