The Sanderson Mechanism

In a breakthrough insight in 1997, Robert Sanderson invented the Sanderson Mechanism. Using a unique and simple transition arm mechanism, the Sanderson Mechanism is a paradigm shift from conventional designs that employ a crankshaft, bent axis, swash plate, or wobble plate to convert reciprocating motion to rotary motion or vice versa. Relative advantages of the Sanderson Mechanism include variable speed operation without separate control devices, fewer parts, 10-25% greater fuel efficiency, major decreases in footprint and weight, and near perfect balancing resulting in lower vibration and noise. The Sanderson Mechanism has proven scaleable and widely applicable beyond engines. Development projects by licensees range from a 500 horsepower pump to 5 HP compressors, from a hydrostatic transmission to refrigeration systems.

Since its founding, Sanderson Engine Development, LLC (SED) has received multiple patents, successfully tested prototypes under a wide range of conditions, and signed development agreements with major US companies. SED's business model is to license the technology in exchange for future royalties.

News

LHST Motor Tests Show Impressive Performance
Hydraulics & Pneumatics Magazine
August 2006

Pump Cuts Friction By Eliminating Side Loads
Hydraulics & Pneumatics Magazine
August 2005

Fluid Power Targeted for New Pump-Motor Design
Edited by Alan Hitchcox
Ideas & Applications
Hydraulics & Pneumatics Magazine
July 2003

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