Of these, ten were particularly special and included the machine to cut the trochoid block.

"You can call it also trochoid or cycloid, but it is much the same.

Lubrication is dry sump, with a trochoid pump.

Lubrication is wet sump using a trochoid pump; an oil radiator assists with cooling.

Gear pumps trochoid pumps and vane pumps are all commonly used.

Higher temperatures and pressures affected both apex seals and the chrome-on-steel-on-aluminum coating of the trochoid surface.

The surface of the trochoid chamber which the apex seals rubbed along was coated with a CEM (composite electrochemical material) consisting of nickel silicone carbide.

The shell has a typical trochoid shape with a spire angle of approximately 72 degrees and nearly smooth sided until the body whorls which are slightly inflated at the shoulder with a rounded periphery.

The guided rotor compressor (GRC) is a positive-displacement rotary compressor based upon an envoluted trochoid geometry which utilizes a parallel trochoid curve to define its basic compression volume.

Making the trochoid profile "oversized", by the radius of the apex seal tip, was recognized as essential to seal, in three planes, and this was retained unchanged, but made heavier initially, and later changed to more rugged Curtiss-Wright patented designs that still retained the cylindrical pin.