Electric winch device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 11, 2018
Grant Date -
Feb 16, 2017
app pub date -
Apr 7, 2015
filing date -
Apr 21, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An electric winch device including an electric motor that rotates a winch drum in a hoisting direction, and generates regenerative electric power when a rotation of the winch drum in a lowering direction is transmitted to the electric motor, a transmission device that transmits the rotation between the electric motor and the winch drum, a power calculating section that calculates power of the target object by freefall, and a control section that controls an operation of the transmission device. When the power calculated by the power calculating section exceeds reference electric power, the control section causes the transmission device to change the transmission rate of the rotation to a transmission rate at which the regenerative electric power generated by the electric motor is equal to or smaller than the reference electric power.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2015 Application Filing Year
- B66D Class
- 143 Applications Filed
- 109 Patents Issued To-Date
- 76.23 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- B66D Class
- 0 % this patent is cited more than
- 7 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 11, 2026 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jun 11, 2030 |
