Displacement of an object with hydraulic actuators

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United States of America Patent

PATENT NO 11137330
APP PUB NO 20190226959A1
SERIAL NO

16253730

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An object is displaced alternately in opposite directions, using a hydraulic power unit having a rotatable body which includes the shaft of a hydraulic machine having electronically commutated valves. A motor drives the rotatable body. The hydraulic machine drives an actuator to displace the object in use. Energy is transformed from rotational kinetic energy of the rotatable body to elastic strain energy or elastic strain and gravitational potential energy of the object during a pumping phase and rotation of the rotatable body slows, but does not change direction. The potential energy then drives the hydraulic machine to motor and the rotatable shaft speeds up again, storing rotational kinetic energy. The displacement of the hydraulic machine is controlled throughout to match a time varying demand taking into account the varying speed of rotation of the rotatable shaft. The motor provides energy to compensate for losses and the process can repeat cyclically.

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Patent Owner(s)

Patent OwnerAddress
ARTEMIS INTELLIGENT POWER LIMITEDUNIT 3 EDGEFILED INDUSTRIAL ESTATE EDGEFIELD ROAD LOANHEAD MIDLOTHIAN EH20 9TB

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Caldwell, Niall Loanhead, GB 21 152
Mccurry, Peter Loanhead, GB 3 7
Rampen, William Hugh Salvin Loanhead, GB 33 269

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