DEVICE AND METHOD FOR OPERATING A HAND-HELD WORKING APPARATUS
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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N/A
Issued Date -
Jun 13, 2013
app pub date -
Dec 4, 2012
filing date -
Dec 10, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A hand-held working apparatus has an internal combustion engine having a crankshaft which is driven in rotation. The crankshaft drives at least one tool of the working apparatus via a centrifugal clutch. The working apparatus has a device for determining the speed of the internal combustion engine and a control device which controls the internal combustion engine. It is provided that the profile of the speed of the internal combustion engine is evaluated by the control device, and that the engagement speed of the centrifugal clutch is determined from the profile of the speed of the internal combustion engine. A method of operation is also provided.
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 | |
---|---|---|
ANDREAS STIHL AG & CO KG | BADSTR 115 WAIBLINGEN 71336 |
International Classification(s)

- 2012 Application Filing Year
- F02D Class
- 1267 Applications Filed
- 1107 Patents Issued To-Date
- 87.38 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Böker, Robert | Winnenden, DE | 4 | 30 |
# of filed Patents : 4 Total Citations : 30 | |||
Däschner, Heiko | Leutenbach, DE | 3 | 17 |
# of filed Patents : 3 Total Citations : 17 | |||
Harrer, Michael | Pleinfeld, DE | 4 | 35 |
# of filed Patents : 4 Total Citations : 35 |
Cited Art Landscape
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Patent Citation Ranking
- 5 Citation Count
- F02D Class
- 3.33 % this patent is cited more than
- 12 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 13, 2024 |
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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