(19)Fresh off Patent
(45) Week of Oct 19, 2026 No. 7 3,667 lapsed 70 listed
Energy & batteries · lapsed Sep 9, 2026

A vertical-pivot wing turbine (PAVA) for wind or water

A rotating turbine assembly with multiple wing assemblies that pivot about shafts parallel to the central drive shaft to present a broad face to incident flow in the drive quadrant and align with flow in the glide quadrant. Wings are mounted between two end assemblies and may include articulating flaps; a central airfoil deflects flow toward wings in the drive quadrant. Intended users include small wind or water-power equipment makers and installers who deploy turbines for distributed generation or fluid-energy harvesting.

Sheet 1 of the patent drawingsSheet 2 of the patent drawings

(57) What the patent covered

This write-up was generated by AI from the patent's text and may contain mistakes, so check it against the original patent before relying on it.

The independent claim covers a turbine with a rotatable central drive shaft and two spaced end assemblies that secure multiple primary wing assemblies. Each wing is mounted on a pivot axis parallel to the central axis and can pivot between a radial "drive" position (transverse to incident flow) and a tangential "glide" position (parallel to incident flow); the pivot permits limited angular motion, and a central airfoil is provided to deflect fluid toward the wings' drive positions. Claim 12 adds secondary wing assemblies with analogous pivoting about parallel axes.

Distinguishing feature: Wings pivot about vertical (parallel-to-shaft) axes so they present large frontal area in the drive quadrant and align with flow in the glide quadrant, plus an onboard central airfoil and optional secondary wing stages.

Novelty 3/5. Pivoting blade sections and variable-pitch blades were known for turbines; this patent emphasized vertical pivot axes and staged concentric wing rings to increase frontal capture and reduce drag, which is a modification of familiar variable-area designs.

Manufacturing

Likely assembled from stamped or machined metal end discs/hubs, turned or extruded central drive shaft, injection-molded or laid-up composite wing panels, fitted stainless-steel pivot shafts and riveted/bolted assembly; optional flaps hinged to wing panels and hand assembly of stages.

Materials: Sheet metal (aluminum or steel) for end assemblies and struts, composite or metal wing panels (fiberglass, aluminum), hinges/pivot shafts (stainless steel), rubber or polymer seals/bushings for pivots.

Manufacturability 4/5. Manufacture requires several simple metal or composite parts, standard pivots and bolting; tooling for discs, shafts and wings plus moderate assembly labor are needed but no microelectronics or tight optical tolerances.

Market demand

Comparable products are on sale; this exact design was not found. No current US listings for the exact PAVA wing-assembly turbine; only patents describe the design (e.g., parallel-and-vertical-axis configurations) and there are several commercial vertical-axis wind turbine options, but not this specific PAVA-wing assembly product.

Demand check by web search, week of Oct 12, 2026. Listings change frequently.

Buyers: Small-scale wind or hydro project developers, off-grid homeowners, equipment makers for distributed renewables.

Sourcing

Factories list related products that could be adapted, at about $20670.96 per unit with a typical minimum order of 1 unit. OEM/private label and customization options appear available; the listing is for a vertical-axis wind turbine generator (5–20 kW range) with vertical axis and multi-blade design, which is the closest match to a PAVA-style turbine in these marketplaces.

Supplier prices are from public listings found by web search, quoted before customization, shipping and duties. Use them to decide whether to request a quotation.

Before manufacturing

No related continuation or divisional patents in force were found. Design patents, trademarks and unrelated patents may still cover the product.

Patent has lapsed; practical issues include structural loads on pivots, fatigue of articulating flaps, certification (IEC wind turbine standards) and a crowded market for small turbines.

About 1.5% of lapsed patents are later revived by their owners. This page is a research lead, not legal advice. Obtain a freedom-to-operate opinion before manufacturing.

Claim 1, as granted

1. A turbine assembly for converting fluid flow into rotational movement for useful work, including: a central drive shaft assembly rotatable about a central axis: a pair of end assemblies secured to said central driye shaft assembly and spaced apart along said central axis: a plurality of primary wing assemblies secured between said end assemblies and rotatable about primary pivot axes that are parallel to said central axis: said primary wing assemblies impinging on the fluid flow and turnin said central drive shaft assembly in a rotational drive direction; said primary wing assemblies being reciprocally rotatable about their respective pivot from arp imary drive position in which said primary wing assemblies extend generally radially with respect to said central axis and transverse to incident fluid flow to maximally impinge on said fluid flow, to a primary glide position in which said primary wing assemblies extend generally tangentially to said rotational drive direction to minimize drag; pivot means for securing said primary wing assemblies between said end assemblies, said pivot means permitting limited angular motion of said primary wing assemblies between said primary drive and primary glide position; and, a central airfoil secured about said central drive shaft assembly for deflecting fluid flow towards said drive position of said primary wing assemblies.