Abstract: A system comprising an assembly of structures and supports operable for installation in a vehicle for the purpose of transporting at least one medical attendant, one patient disposed on a stretcher, and a driver on a small utility vehicle having a flat horizontal surface or “bed”. The invention provides an improved method for evacuating injured people such as, for example, injured victims of a terrorist attack, or injured soldiers from a battlefield, on a relatively narrow vehicle. The supports are arranged so that at least one patient on a stretcher or spineboard can be placed longitudinally in the bed of the vehicle with a medical practitioner positioned adjacent the patient to attend to the patient's medical needs during transport.

Abstract: A gerotor and bearing apparatus for a whirling mass orbital vibrator which generates vibration in a borehole. The apparatus includes a gerotor with an inner gear rotated by a shaft having one less lobe than an outer gear. A whirling mass is attached to the shaft. At least one bearing is attached to the shaft so that the bearing engages at least one sleeve. A mechanism is provided to rotate the inner gear, the mass and the bearing in a selected rotational direction in order to cause the mass, the inner gear, and the bearing to backwards whirl in an opposite rotational direction. The backwards whirling mass creates seismic vibrations.