Method for controlling a combined rotary/push movement
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 20, 2018
Grant Date -
Feb 25, 2016
app pub date -
Aug 20, 2015
filing date -
Aug 22, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention relates to a method and device for controlling a combined rotary/push movement of a load-receiving means of an industrial truck, in particular a three-way stacker, both the rotary movement and the push movement being brought about by means of respective hydraulic elements (32, 34), which are supplied with hydraulic fluid by a single hydraulic pump (22) which is driven by an associated pump motor (24), and a performance characteristic of the hydraulic pump (22) being controlled according to a predetermined progression over time during the rotary/push movement; the industrial truck comprising a valve assembly (30) which is designed to be operated such that, below a threshold value for the hydraulic pressure provided by the hydraulic pump (22), only the rotary movement of the load-receiving means is brought about, while, above the threshold value, both the rotary movement and the push movement are brought about. Here, sensor means (36a, 36b) are provided which detect a temperature of the pump motor (24) and/or of the hydraulic pump (22), and the predetermined progression over time of the performance characteristic of the hydraulic pump (22) during the rotary/push movement is adapted according to a predetermined relationship depending on the temperature of the pump motor (24) and/or of the pump (22) detected by the sensor means (36a, 36b).
First Claim
Other Claims data not available
Family
International Classification(s)
- 2015 Application Filing Year
- F15B Class
- 624 Applications Filed
- 480 Patents Issued To-Date
- 76.93 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- F15B 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 | Sep 20, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 20, 2029 |
