Patent Pending · Three USPTO Provisional Applications On File

BUOYANCYDRIVEENGINE

Zero fuel. Zero emissions. Zero exhaust. A sealed, closed-loop hydraulic power system in development. Stable circulation demonstrated across 39 documented prototype test runs. Veteran-owned and operated. Built in Ocoee, Florida. Patent pending.

See The Data Request Documentation
BDE prototype header assembly — top of 50-foot test system
Header Assembly — Top of 50-ft Prototype
Stand pipes visible. Airlift column left — air exits through stand pipes. In full-scale system, exhaust air is dewatered and returned to compressor. Right pipe: downflow — Force 2.
BDE prototype base — Marty Hunt — Ocoee Florida
Base of 50-ft Prototype — Ocoee, Florida
Inventor Marty Hunt at the inlet and air injection point. System standing at full 50-foot test height.
Sealed Closed-Loop Design
39 Documented Test Runs
Zero Fuel Cost — Ever
USPTO Patent Pending
EMP Hardening Designed In
250 MPH Wind Design Target
American-Made by Design
Sealed Closed-Loop Design
39 Documented Test Runs
Zero Fuel Cost — Ever
USPTO Patent Pending
EMP Hardening Designed In
250 MPH Wind Design Target
American-Made by Design
Prototype Results
39
Test Runs
Documented across multiple test sessions — third party video recorded
135
GPM
Measured flow in the sealed 50-ft prototype loop — calibrated digital flow meter
45
Minutes
Continuous run observed by a university fluids-lab instructor — circulation held steady
224
Feet
Full-height test rig — next step — measuring compressed-air power in against shaft power out
The Physics
Four Elements.
One System.
1
Present in all airlift systems
Airlift Buoyancy
Rising bubbles displace water upward. The baseline force present in all airlift systems since 1797. The BDE starts here and goes further.
2
⚡ Core Invention — Patent Pending
Pressure Differential Drive
The sealed return column contains pure water — the heaviest possible fluid. The upflow column contains an air-water mixture — lighter than pure water. This creates a persistent pressure differential that drives continuous circulation. Measured in the prototype. This is the core of the invention.
3
Sealed loop
Bubble Expansion
As bubbles rise, pressure drops and they expand according to Boyle's Law, making the upflow column lighter still. Because the loop is sealed and returns to its own starting height, that lift drives circulation instead of raising water out of the system. Prototype riser pressure reached 0 PSI at 15 feet.
4
Full scale design
Rotor Power Extraction
The downflow carries solid water — no bubbles — past partial-immersion rotors that turn generators. At full scale, a 1,280-foot helical penstock carries inline turbines along its length. Shaft power is measured against compressed-air power in the 224-foot test.
The Data
Prototype Results.
ParameterPrototypeNotes
Flow Rate131–135 GPMCalibrated digital turbine flow meter
Flow, Valve 3/4 Closed85 GPMCirculation held under heavy restriction
Injection Pressure18 → 11 PSIFell while flow held
Longest Observed Run45 minutesObserved by university fluids-lab instructor
Air FlowNot yet meteredMetered in the 224-ft test
Shaft PowerNot yet measuredPrimary goal of the 224-ft test
Gryvoze digital turbine flow meter reading 135 GPM — BDE prototype test run 2
135 GPM Flow meter on ground — end of Test Run 2. Gryvoze digital turbine flow meter. Calibrated instrumentation. This is the actual reading — not a projection.
Sealed. Stable. Repeatable.
The 50-foot sealed prototype circulated water continuously on a regulated air supply across 39 documented runs, including a 45-minute run observed by a university fluids-lab instructor. That demonstrates stable circulation. It does not yet demonstrate net power: the prototype carried no power-extracting load, and its air flow was not metered.
The next step is a 224-foot full-height test that measures compressed-air power in against shaft power out on the same clock. Three USPTO provisional patent applications are on file. Third party video recorded.
USPTO 64/035,998 USPTO 64/036,527 USPTO 64/126,666 3rd Party Video 39 Documented Runs
National Security
Built for the Real World.
⚡
EMP Hardened
Designed for Faraday cage construction to the MIL-STD-188-125 standard. No solid state components in the fluid system. Intended to keep running through an EMP event by design, not by add-on protection.
🌀
Hurricane Resistant
Designed to a 250 mph wind target under ASCE 7 Risk Category IV. Reinforced concrete construction. No exterior windows. No exposed rooftop equipment. Intended to keep running through major hurricanes.
🔒
Zero Supply Chain Risk
No fuel. No imports. No foreign dependency. The only input is compressed air from American-made compressors.
🗺️
Grid Partnership
Designed to site at or adjacent to major grid transfer stations. Distributed generation hardening the grid at its most critical nodes against weather, attack, and cascading failure.
Full Scale Design
Full-Scale Design.
Systems Per Station
14
Each with its own sealed loop and compressor
Airlift Pipes Per System
91
4-inch hexagonal close-pack — 224-foot column
Downflow Penstock
1,280 ft
4-foot diameter — 10° helical slope — inline turbines
Station Building
160 × 160 ft
About 224 feet tall — climate controlled
Fuel Cost
Zero
No fuel by design
Net Output
Pending
First measured in the 224-foot full-height test
System Enhancement
Secondary Air Injection — The Venturi Stage.
V
Venturi Secondary Injection
About 70 feet below the header, rounded rails between the hex pipes form a Venturi throat with a valve-controlled 0.025-inch injection slit. Brought on line after start-up, it adds gas higher in the upflow column, where pressure is lower. Its net effect on output will be measured in the 224-foot test with the stage on and off.
F
Measured, Not Assumed
The 224-foot test rig includes injection ports at 70 and 100 feet, so the secondary stage can be compared directly against base injection alone, using compressed-air power in against shaft power out.
M
Micro Bubble Self-Optimization
In prototype testing, inlet pressure dropped from 18 PSI to 11 PSI while flow held. One explanation under study is dissolved air releasing as micro bubbles in the upflow. Understanding this effect is part of the full-height test program.
C
Lower Running Pressure
Once the loop is circulating, pressure at the injection point drops as the turbines take head, so the compressor runs well below start-up pressure. A high-pressure flask bank handles start-up, and a smaller variable-speed compressor sustains operation.
Where It Can Be Built
Deployment Options.
Utility Substations
The primary deployment model. A 150 by 160 foot footprint at or adjacent to existing grid transfer stations. Power where it is needed, eliminating long transmission runs and grid vulnerability at the most critical nodes.
Municipal Water Tower Retrofit
Existing elevated water towers repurposed as BDE power generation units. The existing tank becomes the header chamber. The helical penstock wraps the existing tower legs. A municipal liability becomes a community power asset — at a fraction of new construction cost. Ideal for small towns and rural communities.
Remote and Off-Grid Communities
Alaska villages, mountain communities, and remote locations currently dependent on diesel generation flown or shipped in at enormous cost. No fuel supply chain. No import dependency. No fuel to ship in, ever.
Island Nations and Developing Communities
Prefabricated deployable BDE units manufactured, shipped, and installed as complete standalone systems. No existing infrastructure required. Provides simultaneous power generation and elevated water storage. For island nations paying heavily for imported diesel power, a fuel-free alternative.
Mountain and Cliff Face Installations
Natural vertical elevation replaces engineered structure. The airlift column runs straight up the rock face. The downflow return runs at any angle back to the base with a single 27-foot radius turn. No building required where nature provides the height.
Data Centers and Industrial Facilities
On-site baseload power for facilities with constant high demand. Zero fuel cost, zero emissions, zero grid dependency. On-site generation with no fuel cost.
100% American.
No Exceptions.
Designed to be built from American-made components and materials by American workers. No foreign fuel imports. Every dollar stays in America and creates American jobs.
American Steel Mills
American Pipe Manufacturers
American Machine Shops
American Compressor Manufacturers
American Electrical Systems
Veteran-Owned and Operated
No Foreign Supply Chain
No Fuel Imports — Ever
Current Status
Where We Stand.
USPTO Provisional Patent Applications Filed
Three provisional applications on file for the Buoyancy Drive Engine — April through August 2026 — utility application due April 10, 2027
Confirmed
39 Documented Prototype Test Runs
Multiple test sessions — calibrated flow meter — third party video — stable circulation demonstrated
Confirmed
CEBA Membership — Clean Energy Buyers Association
380+ member companies including Microsoft, Google, Amazon — energy procurement community engaged
Active
Defense Innovation Unit — Solution Brief Submitted
DoD installation energy resilience — EMP hardened zero fuel baseload power
Submitted
Nature's Energy Systems LLC — Formed
Florida LLC filed October 7, 2026 — active — veteran-owned and operated
Confirmed
224-Foot Full-Height Test
Crane, engineering, and fabrication quotes underway — measures compressed-air power in against shaft power out
In Progress
CFD Modeling
Computational fluid dynamics, calibrated to full-height test data — scoping with modeling firms
Planned
Get In Touch
Ready to Talk.
All data and full technical documentation — including prototype test runs, pressure profile analysis, performance comparison charts, BDE versus open loop comparison data, concept paper, and patent documentation — available immediately upon request.
Inventor
Marty Hunt
Company
Nature's Energy Systems — Veteran-Owned and Operated
Phone
563-499-1907
Email
BDE.naturesenergysystems@protonmail.com
Location
Ocoee, Florida
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