Genesis Partners, L.p.

Sunrise Medical Hhg, Inc.

Assembled Systems, Inc.

Bernard E Berlinger, Jr

John Robert Colbourne

Darin J Trippensee

Christopher N Tryens

A gearing system which includes a pair of conjugate gears. The tooth profile of the first gear lies entirely within the pitch circle of the first gear, and the tooth profile of the mating gear lies entirely outside the pitch circle of the mating gear. The profile of the first gear is fully or partially concave, and the tooth profile of the mating gear is fully or partially convex. The profiles of the conjugate gear pair may have constant, or nearly constant, relative curvature. Alternatively, due to the shape of the profiles, constant, or nearly constant, contact stress results when the gears are in mesh.

Gear form constructions

A gearing system which includes a pair of gears. The tooth profile of the first gear has three portions: a concave portion lying within the dedendum of the first gear, a convex portion lying within the addendum of the first gear, and a transition zone disposed between the concave and convex portions. Similarly, the tooth profile of the mating gear has three portions: a concave portion lying within the dedendum of the mating gear, conjugate to the convex portion of the tooth profile of the first gear; a convex portion lying within the addendum of the mating gear, conjugate to the concave portion of the tooth profile of the first gear; and a transition zone disposed between the concave and convex portions. The pair of gears may be designed such that no contact between meshing teeth is made along the transition zones. The tooth profiles of the gear pair have constant, or nearly constant, relative curvature. Alternatively, due to the shape of the tooth profiles, constant, or nearly constant, contact stress results when the gears are in mesh.

Gearbox housing for a power wheelchair

A personal mobility vehicle arranged for disassembly and assembly to facilitate transporting of the vehicle. A unitized drive unit, composed two drive wheels, a motor and a transmission for driving the drive wheels in response to the motor, is selectively mounted on and removed from a unitized support frame which serves as the basic support structure for the vehicle.

Growing community of inventors

Furlong, PA, United States of America

Bernard E Berlinger, Jr