Mobile working machine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 10, 2006
Grant Date -
Aug 19, 2004
app pub date -
May 8, 2002
filing date -
May 22, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention relates to a mobile handling arrangement with hydraulic circuit, forming part of which hydraulic part of which hydraulic circuit (L) is a lifting cylinder (1) arranged in a lifting arrangement (100) made for handling a variable load together with an accumulator arrangement (6) for recovering and reusing the lowered load energy, the hydraulic circuit also comprising a variable hydraulic machine (3) having two ports (10, 11), the said hydraulic machine being capable, by way of a drive unit (D), of delivering full system pressure in two directions of flow to the said ports, one port (11) being connected to the said accumulator arrangement (6) and the other port being connected to the said lifting cylinder (1), characterized in that the hydraulic circuit (L) comprises a temperature sensor (95) in connection with a gaseous phase part (68B) of the said accumulator arrangement (6) and a control and feedback unit (94) in communication with the said temperature sensor (95), by means of which the filling level in the said accumulator arrangement (6) is adjusted as a function of the temperature in the said gaseous phase part (68B).
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