Patent ID: 8966889
Filing Date: 2015-03-03
Classification: B60G,F15B,Y02E

Abstract:
1. A active energy harvesting device comprising: a pressure tube defining a fluid chamber; a piston slidingly disposed within said pressure tube, said piston dividing said fluid chamber into an upper working chamber and a lower working chamber; means for recuperating energy generated due to the sliding movement of said piston, said recuperating means being in fluid communication with said upper and lower working chambers; a pump; a motor/generator mechanically connected to said pump; a quadrant convertor assembly in fluid communication with said pressure tube; wherein said quadrant convertor assembly comprises a first plurality of check valves and a quadrant convertor separate from and in fluid communication with said first plurality of check valves; said first plurality of check valves comprises a first check valve allowing fluid flow into said upper working chamber while prohibiting fluid flow out of said upper working chamber and a second check valve allowing fluid flow into said lower working chamber while prohibiting fluid flow out of said working chamber; said pump is hydraulically connected directly to said quadrant convertor and to said first and second check valves.