Hydraulic Fluid Supply Apparatus And Methods
AssigneeNACCO Materials Handling Group, Inc.
InventorsMaurice Sifri, Chikka Rao, Tory Hoff
Life of this patent
Estimating the term…
Abstract
Commonly available industrial vehicles may be constructed with a frame originally designed for a particular fuel source where such a frame is used to construct an industrial vehicle that uses a different fuel source with a different fuel storage compared to the industrial vehicle for which such a frame was originally intended. Such a truck powered by a different fuel source typically includes an empty space that was originally intended to house the original fuel, and such empty space may be used to increase the hydraulic storage capacity for such a truck.
Claims6
An industrial vehicle, comprising:
- a component operated by pressurized hydraulic fluid;
- and
- a hydraulic circuit configured to supply pressurized hydraulic fluid to the component, the hydraulic circuit comprising;
- a first hydraulic storage tank configured to be pressurized to a predetermined pressure that is greater than atmospheric pressure for a standard atmosphere at sea level;
- a second hydraulic storage tank configured to be pressurized to the atmospheric pressure surrounding the industrial vehicle;
- a pump, wherein the pump supplies pressurized hydraulic fluid to the component;
- a first fluid conduit connected between the first hydraulic storage tank and the second hydraulic storage tank and located to communicate hydraulic fluid between the first hydraulic storage tank and the second hydraulic storage tank;
- a second fluid conduit connected between the second hydraulic storage tank and the pump and configured to communicate hydraulic fluid from the second hydraulic storage tank to the pump;
- a third fluid conduit connected between the component and the first hydraulic storage tank and configured to communicate hydraulic fluid from the component to the first hydraulic storage tank;
- a fourth fluid conduit connected between the first hydraulic storage tank and the second hydraulic storage tank and located to primarily communicate air between the first hydraulic storage tank and the second hydraulic storage tank and to secondarily communicate hydraulic fluid between the first hydraulic storage tank and the second hydraulic storage tank;
- and
- a fifth fluid conduit connected between the second hydraulic storage tank and a breather communicating with the atmosphere surrounding the vehicle and configured to communicate air between the second hydraulic storage tank and the breather.
Dependencies are inferred from the claim text.