Abstract: A manual powered lawn mower comprises a pair of large diameter drive wheels on an axle, two clutch and roller bearing mechanisms on the axle coupling the drive wheels thereto, a gear mechanism coupled to the axle for translating rotation of the drive wheels to rotation of a gear around a vertical axis, and a rotary type blade which is coupled to the gear mechanism via a vertical axle and another clutch and roller bearing mechanism. When the lawn mower is pushed forward, the clutch and roller bearing mechanisms on the wheel axle causes the axle to drive the gear mechanism, which in turn drives the vertical axle and the blade. When a drive wheel is not turning the axle faster than the speed that the axle is turning, that drive wheel is decoupled by the clutch and roller bearing mechanism and no longer adds either power or drag to the system. With clutch and roller bearing mechanisms on each wheel, a "differential" is provided which permits maneuverability without adversely affecting blade speed.

Abstract: A recumbent vehicle comprising a single, bowed tubular member forming a main frame having a front end and a rear end. A rear wheel fork assembly is mounted toward the rear end of the main frame with a rear wheel rotatably mounted in the rear wheel fork assembly. A crank assembly, including crank pedals, is mounted to the front end of the main frame. The crank assembly is adjustable to alter the distance of the crank pedals from the front end. A pair of front steering wheels is rotatably mounted toward the front end of the main frame, rearwardly of the crank assembly. A body seat, substantially conforming, throughout its length, to the bowed shape of a portion of the main frame generally intermediate the front steering wheels and the rear wheel, is mounted in alignment with said portion of the main frame.

Abstract: A loudspeaker system comprises a flexible tube with a first loudspeaker mounted within one end and a second loudspeaker mounted within the other end thereof. Each loudspeaker is oriented to direct sound outwardly from the end of the tube in which it is mounted. A baffle plate is mounted within the tube, intermediate the first and second loudspeakers.