Abstract: A planetary speed reducer includes a drive roller having a drive surface, a stator having a concentric drive surface, the respective drive surfaces defining an annular space therebetween. A plurality of rotatable planet rollers have peripheral portion in frictional driving connection with the said drive surfaces of the roller and stator. An output shaft is connected to an assembly which carries the planet rollers.

Abstract: A speed reduction drive is comprised of a chain carrying a plurality of rollers, the chain being operatively connected to an output shaft via a sprocket or the like. The rollers of the chain progressively pass between a rotating drive pinion and a stator surface whereby the chain is driven at a linear speed which is a function of the diameter of the drive pinion and the arcuate surface of the stator, the speed of the chain being reduced by differential drive effects.

Abstract: The present invention relates to a portable bag distending and supporting apparatus for holding a bag, such as a plastic leaf collector or trash collector, with the receiving end thereof in open position essentially perpendicular to a horizontal surface, thus to permit leaves and trash to be raked or swept into the interior of the bag. The device is characterized by a support mechanism which holds the receiving end of the bag against tilting without requiring the use of stakes or spikes embedded in the ground, the support apparatus in addition functioning at least partially to extend the bag in a lengthwise direction to facilitate filling. The device is further characterized by being constructed of inexpensive components which may be readily assembled by the user, thus reducing the bulk of the apparatus in shipping.