Abstract: A three wheeled vehicle has a steered front wheel and two driven rear wheels. A novel suspension has inner and outer members keyed to rotate in lockstep, but to accommodate axial travel of only the inner member. The inner member rises and falls with the front wheel as the vehicle negotiates uneven terrain, and the outer member is axially immobilized. Steering inputs are imposed on the outer member, which passes rotational movement to the inner member. The novel suspension incorporates a spring and shock absorber, and enables steering linkage to avoid vertical displacement imposed upon the suspension. In various embodiments, the vehicle accommodates one, two, or three passengers, and includes open or fully enclosed bodies.

Abstract: A three wheeled vehicles has two front wheels and one rear wheel. The front wheels are driven. Both front and rear wheels are steered. A novel steering linkage causes the vehicle to steer with directionally conventional response to a steering input, in that the direction of turning a steering wheel or bar is also the direction in which the vehicle turns. A rear axle assembly provides uncomplicated construction accommodating both the steering and a spring and shock absorber type suspension. In a first embodiment, bodywork covers the front of the vehicle, spanning both front wheels. In a second embodiment, bodywork is extended to envelope substantially the entire vehicle.

Abstract: A single-use syringe having a needle which retracts upon a full depression of its plunger and thus, renders the syringe non-reusable. The plunger selectively engages the barrel of the syringe so as to limit the withdraw of the plunger relative to the barrel. The barrel has formations extending therefrom which selectively and matingly engage formations extending from the plunger so as to selectively limit the travel of the plunger relative to the needle and retract the needle into a concealed position. The nose of the barrel carries a split ring which is contractible to permit a rearward displacement of the barrel and the needle attached thereto relative to the stationary housing upon a full depression of the plunger. The travel of the barrel relative to the stationary body is terminated by dogs located proximate the forward end of the nose which are engageable with the notches in the stationary housing upon the rearward displacement of the barrel relative to the stationary housing.

Abstract: A three wheeled vehicle has two wheels in front, front wheel drive, and a single rear wheel, and rear wheel steering. A novel steering linkage causes the vehicle to steer with directionally conventional response to a steering input, despite the rear wheel steering. A rear axle assembly provides uncomplicated construction accommodating both the steering and a spring and shock absorber type suspension. In a first embodiment, bodywork covers the front of the vehicle, spanning both front wheels. In a second embodiment, the bodywork is extended to envelope substantially the entire vehicle.