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Flynn-C: central claims

Source gap

The only document is US 6,246,561 B1 (49 pages: front page p.1, 32 drawing sheets pp.2-33, description pp.34-45, claims pp.45-49). It has no text layer, so every page was read from OCR (tesseract); quotations are subject to OCR error (for example the OCR 'B_sat' is B_r and B_max in the page image). The description and claims were read in full from OCR in Step 1. Deep reads now cover pp.36-39, the claims (pp.45-49), the motor embodiments and drive circuits (pp.40-45), and seven drawing page images (pp.3, 7, 8, 9, 10, 11, 12). Digest 02 mis-paginates pp.40-47 and omits claims 1-25, so do not cite digest page numbers. The other drawing sheets (including FIGS. 19-50 and the FIG. 40-44 circuit drawings) were not studied, so statements about circuit details such as missing flyback diodes rest on the text only. The patent contains no measurements or test data (its only data-like figure, FIG. 16C, has no flux scale and is not stated to be measured). No other documents (papers, test reports, motor performance data, later Flynn or QM Power publications) are in the folder. Web checks for independent tests of Flynn-type devices could not be run (search quota exhausted), so any statement about whether such devices work as advertised rests on [memory] or on the model calculations in the deep reads, not on this folder. Obtain independent efficiency test data before judging claims 4, 5 and 6. Numbering: 'claim N' below means a claims.md claim; patent claims are written 'patent claim N'.

Central claims

  1. Pulsed control coils on two parallel paths can switch essentially all of a permanent magnet's flux from one path to the other, by opposing flux in one path or aiding it in the other (p.37; patent claim 1; patent claims 16, 18, 19 separately protect opposing-only, aiding/opposing alternation and push-pull modes). The deep read finds the doubling of flux on switching holds in the linear model (1.98x at the critical current).
  2. A small electromagnetic excitation can control the path of a much larger permanent-magnet flux (p.34). The deep read shows the blocking coil needs the same MMF as a coil-only device, so the control energy is not smaller in MMF terms.
  3. Splitting a given flux over two equal paths cuts the holding force on each armature to one quarter, not one half (p.36). This is standard F = B^2 A/(2 mu0) arithmetic.
  4. Switching permanent-magnet flux between paths gives more coupling force and work per unit of input electrical energy than an all-electromagnet equivalent; the patent's FIG. 14 example needs twice the electrical energy (p.39; this is description only, no patent claim recites it or any efficiency). Deep read: "twice" is reproduced only as field-building (stored) energy, ratio 1.99; coil MMF and steady I^2R holding power give ratio 1; stored energy is returned, so "more work per unit input energy" does not follow.
  5. Motors built on this flux-path switching (embodiments 500, 580, 650, 740) are more efficient and have better torque characteristics than many conventional motors (p.34). The deep read of pp.40-45 finds no torque, speed, power, current or efficiency value and no test of any motor; the only support is the unquantified sentence on p.34. The drive circuits are conventional position-sensed commutation (LED/phototransistor, Hall switch, brush commutator), so the novelty is the magnetic circuit, not the electronics. As an assertion without data this is never tested within the document.
  6. With fixed armatures and secondary coils (device 900; claims 12-14, 38-42), the switching turns the magnet's static flux into time-varying flux for transformer- or inverter-like power conversion (pp.43-44). The deep read finds no voltages, turns, frequencies or outputs given; the only 'twice' (p.44) is the secondary flux swing being twice the control-coil flux, not an energy ratio, and only the changing flux induces voltage.
  7. A permanent magnet limits added coil flux to its own maximum flux density B_max, series magnets double H but not B, and excess coil flux needs a bypass path that does not pass through a magnet (p.36, p.39; FIGS. 3-4, 11-12, 15-16; bypass patent claims 7, 8, 37). Deep read: as a statement of magnet physics this is refuted by calculation (a magnet behaves like an air-like reluctance, recoil permeability about 1.05, with no B ceiling), although the bypass design advice is sound for another reason.

Note: neither the claims (all 42 checked) nor the description pp.40-45 say output exceeds input energy; any over-unity reading comes from outside the document. All "refuted" or "reproduced" statements above are results of an idealised linear model [calc], not experiments on Flynn devices.