Hydraulically-driven concrete finishing trowel having hydraulic fluid cooling system and method
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Apr 25, 2017
Issued Date -
N/A
app pub date -
Feb 9, 2016
filing date -
Feb 9, 2016
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A hydrostatically power self-propelled concrete finishing trowel has at least two coolers in a cooling system of the machine's hydraulic circuit. In the most typical case in which the first cooler is a closed loop oil cooler, the second cooler may take the form of an open loop oil cooler disposed in a flow path connecting one or more low-pressure outlets of the hydrostatic drive system to a reservoir. The closed loop oil cooler actively drops the temperature within the trowel's hydrostatic drive system, while the open loop oil cooler supplements that cooling by reducing the oil temperature in the reservoir.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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HUSQVARNA AB | 561 82 HUSKVARNA |
International Classification(s)

- 2016 Application Filing Year
- E01C Class
- 410 Applications Filed
- 310 Patents Issued To-Date
- 75.61 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Grahl, Scott | Campbellsport, US | 8 | 33 |
# of filed Patents : 8 Total Citations : 33 | |||
Jenkins, Michael | Menomonee Falls, US | 30 | 77 |
# of filed Patents : 30 Total Citations : 77 |
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Patent Citation Ranking
- 8 Citation Count
- E01C Class
- 19.88 % this patent is cited more than
- 8 Age
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11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Oct 25, 2028 |
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