US Patent US5590031 — Zero-Point Field Energy Extraction (US Air Force / Francis Mead) + Buhler Vacuum Thrust Connection

Patent Number: US5590031 (full form: US5590031A) Title: System for Converting Electromagnetic Radiation Energy to Electrical Energy Inventor: Francis M. Mead Jr. (and co-inventors, US Air Force Research Laboratory, Edwards AFB) Assignee: United States Air Force Granted: December 31, 1996 Jurisdiction: United States (US) Physics Domain: Energy generation — zero-point field energy extraction Track Directory (Physics_Math): ZPF energy extraction / Casimir effect engineering; closely related to Track_3 ZPF-inertia coupling but a distinct application (energy conversion vs. mass reduction)

Image files:

• patents_intl/tweets/raw_download/2022064569225474146_1.png

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Video Evidence: Buhler / Exodus Propulsion — Vacuum Electrostatic Thrust via ZPF Recoil (2026)

The quantum mechanism Buhler proposes for his vacuum thrust effect — virtual photon emission from an asymmetric electric field causing the quantum vacuum to recoil — is a ZPF interaction. This connects his experimental work directly to the ZPF energy extraction domain that Mead's patent addresses from the energy-generation side.

Charles Buhler, Lead Scientist at NASA Kennedy Space Center Electrostatics Physics Laboratory and CEO of Exodus Propulsion Technologies, presents his discovery of a "new force" behind the Biefeld-Brown Effect — 2 mN of thrust at 6 kV in hard vacuum ($10^{-6}$ Torr), tested 2,000+ times. Source: @deeptechweek on X, 2026-05-09.

Key Findings from Buhler's Presentation (Transcribed)

The mechanism (quantum formulation):

"The textbooks will tell you that when that virtual photon is created out of the vacuum, the source of an electric field, the vacuum recoils... that's probably where our momentum is coming from. The vacuum itself recoiling."

Buhler goes to third-order QED perturbation theory (12 terms vs. 4 at second order). The relevant term: a virtual photon emitted from an asymmetric electrode field interacts with an external field rather than being absorbed by the opposing charge. The vacuum recoils. The asymmetric geometry biases the direction of this recoil, producing net thrust. In his notation:

$F_{\text{quantum}} \propto Q^2 \cdot Q_{\text{opposing}} = (\varepsilon_0 E^2) \cdot Q_{\text{opposing}}$

The mechanism (classical formulation): Starting from field energy density $U = \int \frac{\varepsilon_0}{2} E^2 \, dV$ (rather than $U = qV$):

• Surface pressure term: $\Delta P = \frac{\varepsilon_0}{2}(E_1^2 - E_2^2)$ — pressure difference between asymmetric electrode faces
• Volumetric divergence term: $\propto \nabla \cdot \mathbf{E}$

Experimental parameters confirmed:

• Vacuum: $10^{-6}$ Torr (hard vacuum, turbo-pumped)
• Grounded ITO-shielded enclosure surrounds all test articles (ground plane is required)
• Measurement: horizontal gravity pendulum + LabView-connected digital force meter
• 2,000+ trials over ~10 years; third-party independent verification
• Result: 6,000 V → 2 millinewtons
• "Way over unity on the Moon" ($F/m > g_\text{moon} = 1.62 \text{ m/s}^2$)
• Dr. Sonny White (former NASA Eagleworks) also present with his own test article
• Two patents filed by Exodus Propulsion

Disclaimer Buhler stated: "This is not sanctioned by NASA. None of this work has been. A lot of this work was done in between my time as a consultant with ExxonMobil and before I returned to NASA."

Full transcript: Physics/other/transcripts/2052977288627826987_transcript.txt Full PhD-level analysis: Track 33 overview

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US Patent US5590031: Abstract (partial, from patent image)

"A system is disclosed for converting high frequency electromagnetic radiation energy to electrical energy... detector... resonator... such that it resonates at a frequency at which the quantum vacuum fluctuations constantly pop in and out of existence..."

Physical Configuration

The patent diagram shows two spherical antenna/collector nodes connected to a conversion circuit (components 26, 28) and to a larger antenna or parabolic concentrator (component 10). The resonator circuit is tuned to the characteristic frequency of quantum vacuum fluctuations — the zero-point field (ZPF) oscillations present in every point in space as a consequence of the Heisenberg uncertainty principle applied to the electromagnetic field.

Physics of the Zero-Point Field

The vacuum energy density per mode in quantum field theory:

ρ_ZPF = ℏω/2

per oscillator mode. Summed over all vacuum field modes up to cutoff frequency ω_c with mode density g(ω) = ω²/(π²c³):

ρ_total = ∫₀^{ω_c} (ℏω/2) × (ω²/π²c³) dω = ℏω_c⁴/(8π²c³)

This diverges as ω_c → ∞ and requires ultraviolet regularization in quantum field theory.

The Casimir effect demonstrates that ZPF energy density is physically real and position-dependent: between two parallel conducting plates separated by distance d, the renormalized ZPF energy density is:

ρ_Casimir = −π²ℏc/(720d⁴)

with the measured force per unit area:

F/A = −π²ℏc/(240d⁴)

This has been experimentally confirmed to ~1% precision (Lamoreaux 1997, Mohideen and Roy 1998), establishing that ZPF energy density variations between different spacetime regions are physically observable and measurable.

Extraction Mechanism: Resonance at ZPF Frequency

Mead's approach — resonating at the ZPF frequency to extract energy directly — proposes that a detector/resonator system tuned to the characteristic ZPF frequency can couple to the vacuum fluctuations and extract net power. The challenge: this amounts to a Maxwell's demon for the quantum vacuum. Standard thermodynamics (specifically the second law) forbids extracting net work from a thermal reservoir at uniform temperature. The ZPF is formally at T = 0 K (zero-point fluctuations persist even at absolute zero), so the thermodynamic argument applies at its strongest.

However, the Casimir effect demonstrates that the ZPF energy density is non-uniform in the presence of boundary conditions. A system that can cycle between boundary condition states — analogous to a Stirling cycle operating on spatial gradients in ZPF energy density — is not in principle thermodynamically forbidden in the same way as a uniform-temperature heat engine. The Air Force's decision to file and protect this as a patent indicates experimental results or classified theoretical work beyond what is in the public abstract.

Institutional Significance: Edwards AFB

The fact that US Air Force researchers at Edwards Air Force Base — the home of US flight research and testing programs — filed a zero-point energy extraction patent in 1996 is among the strongest data points for the claim that classified physics programs were operating well beyond public knowledge by the mid-1990s. Edwards AFB is where the U-2, SR-71, and F-117 were flight-tested in classified conditions for years before public disclosure.

The Air Force Research Laboratory's decision to file a patent on ZPF energy extraction — rather than simply publishing the research — establishes that the technology was considered operationally protectable, not merely academically interesting. Patents require claims to have industrial applicability; the USPTO requires the applicant to assert that the invention works. If this patent issued (and it did), the USPTO examiner found the claims sufficient to overcome the implicit impossibility objection.

Connection to Pais Patents (Track_20, Track_21)

US5590031 (1996) predates the Pais patents (2015–2016) by nearly two decades and represents an earlier US military attempt to codify ZPF energy extraction as IP. The theoretical lineage:

• US5590031 (1996, USAF, Edwards) — direct ZPF energy extraction via resonant antenna
• US10135366B2 (2015, Navy, NAWCAD) — vibrating piezoelectric shell to generate extreme EM fields coupling to ZPF
• US10144532B2 (2016, Navy, NAWCAD) — use ZPF coupling (via polarized vacuum) for inertial mass reduction

The three patents span 20 years and two military branches, suggesting an ongoing classified program threading through multiple DoD institutions.

Connection to Buhler / Exodus Propulsion (2026)

Buhler's third-order QED mechanism — vacuum recoil upon virtual photon emission from an asymmetric electric field — is the propulsion analog of what Mead's patent approaches from the energy-extraction side. Both involve coupling to the quantum vacuum as a physical reservoir. Mead proposes extracting energy from ZPF fluctuations; Buhler proposes extracting momentum (thrust) from the directional bias of ZPF recoil in an asymmetric geometry.

The convergence of a 1996 USAF patent (ZPF energy extraction) and a 2026 NASA physicist's experimental thrust result (ZPF recoil propulsion) — both independently arriving at the quantum vacuum as the operative mechanism — is significant. Neither cites the other. Both use asymmetric geometries to break the spatial symmetry of ZPF interactions.

See Track 33 overview for full PhD-level analysis of Buhler's classical and quantum formulations, connection to Attempt 2 findings, and open research questions.

Sources

• @deeptechweek on X — Buhler Deep Tech Week NYC 2026 presentation video
• @Andercot on X — amplifying post (149,771 impressions)
• US5590031 on Google Patents
• Lamoreaux, S.K. (1997) — "Demonstration of the Casimir Force in the 0.6 to 6 μm Range," Physical Review Letters 78(1):5–8
• Mohideen, U. and Roy, A. (1998) — Casimir force precision measurement
• US Air Force Research Laboratory, Edwards AFB
• Haisch, B., Rueda, A., & Puthoff, H.E. (1994). "Inertia as a zero-point-field Lorentz force." Physical Review A, 49(2), 678.

This information was compiled from Break_thrus.mdx staging file and @deeptechweek X post transcription.