Other

Motor Patent Licensors, LLC

Thomas H Hopkins

Howard Hendricks

Nicholas R Bries

Patrick J Stoever

Scott T Graham

A radial flux permanent magnet AC motor/generator employs a flat circular stator plate having a plurality of separately-formed electromagnets mounted in a ring pattern on a top surface thereof. A circular flux ring fabricated of powdered metal is mounted to the stator plate outside the ring of electromagnets. A plurality of permanent magnets are mounted in a ring pattern on the outer cylindrical surface of a steel rotor. The stator plate and rotor are axially and diametrically aligned such that the ring of permanent magnets rotates in close proximity to and inside the ring of electromagnets. The electromagnets utilize powder metal cores shaped to have rounded corners and flat sides that permit the use of heavier gauge windings and eliminate the air gaps that exist between the core and windings of prior art electromagnets.

Radial flux permanent magnet AC motor/generator

An underwater treadmill apparatus is made up of a treadmill belt trained over a drive roller and take-up roller, a fluid drive motor and flywheel coupled to a common drive shaft in direct driving relation to the drive roller, and an isolated power source outside of the body of water includes an electric motor-driven hydraulic pump to direct hydraulic fluid under pressure to the hydraulic drive motor. The upper course of the treadmill belt advances over a rigid deck having an upper cushion layer with raised straddle portions on each side, and the take-up roller is resiliently mounted at one end of the deck. A bonding grid break and sacrificial anodes are provided to inhibit corrosion, and the treadmill frame can be placed in compressible padding and be leveled from a point above the surface of the water, for example, when placed in a swimming pool.

Growing community of inventors

Vail, CO, United States of America

Thomas H Hopkins