Method for adjusting the rotational speed of an internal combustion engine of a road-building machine, and road-building machine for said method
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Apr 11, 2017
Grant Date -
Oct 22, 2015
app pub date -
Dec 10, 2012
filing date -
Aug 18, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method for adjusting the rotational speed of an internal combustion engine of a road-building machine which, in addition to a traction drive, has hydraulic motors which are connected to the internal combustion engine and which serve for driving working assemblies, in which method the rotational speed is adjusted as a function of the present power demand of the working assemblies, characterized in that the hydraulic motors are operated using fixed-displacement pumps, and residual volume flows presently to be discharged are reduced by flow valves for hydraulic motors of active working assemblies, for which purpose the rotational speed of the internal combustion engine is automatically adapted during working operation.
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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AMMANN SCHWEIZ AG | 4900 LANGENTHAL |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Tiedemann, Heinz | Emmerthal, DE | 2 | 2 |
# of filed Patents : 2 Total Citations : 2 |
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- 8 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Oct 11, 2028 |
Fee | Large entity fee | small entity fee | micro entity fee |
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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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Nov 24, 2021 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 4 |
Jun 12, 2018 | I | Issuance | |
May 23, 2018 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Aug 03, 2017 | P | Published | |
Jan 26, 2017 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SATO, TAKUMI;ENOMOTO, KOJI;KANAHASHI, YOSHIHIRO;AND OTHERS;SIGNING DATES FROM 20170116 TO 20170118;REEL/FRAME:041090/0727 Owner name: USHIO DENKI KABUSHIKI KAISHA, JAPAN |
Jul 30, 2015 | F | Filing | |
Aug 01, 2014 | PD | Priority Date |

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