Back to results
US 11,703,066 B2Granted
Hydraulic power pack system
AssigneeFOI Group, LLC
InventorDavid Shawn Flatt
Life of this patent
Estimating the term…
Abstract
This invention is a portable pneumatically driven pressure intensifying positive displacement hydraulic power unit that can be transported in a bag or backpack and carried or worn by the user. The device can be powered by any suitable high pressure gas that is preferably contained in a small pressure vessel for portability. The device can be used to supply high pressure hydraulic fluid to tools with a wide range of uses in many fields including construction, industrial, breaching, and emergency service situations. This novel device does not require an electric or fuel powered hydraulic fluid pumping system, which allows it to be very portable and used in almost any environment (e.g., hazardous atmosphere or under water) without being tethered to an electric or fuel powered power source.
Claims33
A hydraulic power pack system, comprising:
- a gas supply vessel containing high pressure compressed gas;
- a pneumatic manifold comprising a first control valve and a second control valve, wherein the first and second control valves are configured to receive the compressed gas from the gas supply vessel;
- a first stage intensifier comprising:
- a first pneumatic cylinder connected to the first and second control valves, wherein the first control valve when actuated is configured to direct the compressed gas to the first pneumatic cylinder;
- a first hydraulic cylinder axially connected to the first pneumatic cylinder;
- a first pneumatic piston disposed in the first pneumatic cylinder;
- and
- a first hydraulic piston disposed in the first hydraulic cylinder and axially connected to the first pneumatic piston;
- a second stage intensifier comprising:
- a second pneumatic cylinder connected to the first and second control valves, wherein the second control valve when actuated is configured to direct the compressed gas to the second pneumatic cylinder;
- a second hydraulic cylinder axially connected to the second pneumatic cylinder;
- a second pneumatic piston disposed in the second pneumatic cylinder;
- and
- a second hydraulic piston disposed in the second hydraulic cylinder and axially connected to the second pneumatic piston;
- a hydraulic manifold configured to transfer hydraulic pressure in the first hydraulic cylinder or the second hydraulic cylinder to a tool cylinder that operates at least one tool coupled to the tool cylinder;
- and
- a pilot line connecting the first hydraulic cylinder to the second control valve, wherein the second control valve is configured to be actuated by pressure in the first hydraulic cylinder.
14 more elements
A hydraulic power pack system, comprising:
- a supply vessel for supplying a high pressure gas to a pneumatic circuit, the pneumatic circuit comprising a control valve that is configured to receive the high pressure gas from the supply vessel;
- an intensifier comprising:
- a pneumatic cylinder connected to the control valve, wherein the control valve when actuated is configured to direct the high pressure gas to the pneumatic cylinder;
- a hydraulic cylinder axially aligned to the pneumatic cylinder;
- a pneumatic piston disposed in the pneumatic cylinder;
- a hydraulic piston disposed in the hydraulic cylinder and axially aligned to the pneumatic piston;
- and
- a spring disposed in the pneumatic cylinder at a forward end of the pneumatic piston, wherein the spring is configured to be compressed by the pneumatic piston when the pneumatic piston moves forward;
- a hydraulic circuit configured to transfer hydraulic pressure in the hydraulic cylinder to a tool cylinder that operates at least one tool coupled to the tool cylinder;
- and
- a backpack that contains the supply vessel, the pneumatic circuit, the hydraulic circuit, and the intensifiers, wherein the backpack is configured to be portably carried by a user.
8 more elements
A hydraulic power pack system, comprising:
- a supply vessel for supplying high pressure compressed gas to a pneumatic circuit comprising first and second control valves that are configured to receive the compressed gas from the gas supply vessel;
- a first stage intensifier comprising:
- a first pneumatic cylinder connected to the first and second control valves, wherein the first control valve when actuated is configured to direct the compressed gas to the first pneumatic cylinder;
- a first hydraulic cylinder axially aligned to the first pneumatic cylinder;
- a first pneumatic piston disposed in the first pneumatic cylinder;
- and
- a first hydraulic piston disposed in the first hydraulic cylinder and axially aligned to the first pneumatic piston;
- a second stage intensifier comprising:
- a second pneumatic cylinder connected to the first and second control valves, wherein the second control valve when actuated is configured to direct the compressed gas to the second pneumatic cylinder;
- a second hydraulic cylinder axially aligned to the second pneumatic cylinder;
- a second pneumatic piston disposed in the second pneumatic cylinder;
- and
- a second hydraulic piston disposed in the second hydraulic cylinder and axially aligned to the second pneumatic piston;
- a hydraulic circuit configured to transfer hydraulic pressure in the first hydraulic cylinder or the second hydraulic cylinder to a tool cylinder that operates at least one tool coupled to the tool cylinder;
- and
- a pilot line connecting the first hydraulic cylinder to the second control valve, wherein the second control valve is configured to be actuated by pressure in the first hydraulic cylinder.
13 more elements
Dependencies are inferred from the claim text.