Hydraulic power shovel with tamping function
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Dec 26, 2023
Grant Date -
Jun 10, 2021
app pub date -
Dec 8, 2020
filing date -
Dec 9, 2019
priority date (Note) -
In Force
status (Latency Note)
Importance
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US Family Size
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Non-US Coverage
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Abstract
A hydraulic power shovel includes a frame, a power cylinder, a hydraulic installation, and a control unit. The frame is configured to support a turret equipped with an arm terminated by a tool, such as a bucket having a tamping surface. The power cylinder is linked to the arm and is configured to press on the turret. The hydraulic installation includes an adjustable flow pump configured to supply the power cylinder via a slide valve and a hydraulic liquid tank. The control unit is linked to (i) a control member actuated by the operator and configured to generate a control signal, and (ii) a sensor configured to generate a sensor signal corresponding to a pressure and temperature of hydraulic liquid in the power cylinder. A vapour pressure diagram of the hydraulic liquid is available in the control unit.
First Claim
Other Claims data not available
Family
| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| FR | B1 | FR3104180 | Dec 09, 2019 |
| JP | A | JP2021092139 | Dec 08, 2020 |
International Classification(s)
- 2020 Application Filing Year
- E02D Class
- 382 Applications Filed
- 262 Patents Issued To-Date
- 68.59 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- E02D Class
- 0 % this patent is cited more than
- 2 Age
Maintenance Fees
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| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Jun 26, 2027 |
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| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jun 26, 2035 |
