Patent ID: 6178729
Filing Date: 2001-01-30
Classification: A01D

Abstract:
A lawn mower system with discharge components for cutting grass and foliage and operable as a function of the height of the grass and foliage to be cut comprising, in combination:a deck having a generally cylindrical side wall with a vertical axis and a sidewall with upper edges and a rear edge and a top wall coupled to the upper edges of the side wall and with an opened bottom, the side wall also forming an open front for nearly 180 degrees of its extent;two pair of wheels including a set of front wheels generally centrally located on opposite sides of the side wall and extending outwardly therefrom and a pair of rear wheels extending outwardly from adjacent to the rear edge of the side wall;a handle having a pivotable lower end coupled with respect to the housing adjacent to the rear edge and having an upper handle area for use by the user;a motor mounted in a central region of the deck with a rotatable drive shaft extending downwardly therefrom;a rotatable blade mounted to the lower end of the drive shaft with the blade having a rotary path of travel which extends fowardly of the open front of the housing and with a supplemental cutter wheel in a circular configuration located between the upper surface of the deck and the lower end of the drive shaft, the wheel having a pair of diametrically opposed apertures with cutting edges formed therein;an opening in the top wall adapted to receive material therethrough for being cut and chopped by the cutting edges of the wheel;a trap door having side edges and having a width essentially equal to the free front upper edge of the deck and essentially equal to the widest part of the housing and with a hinge coupling the deck and trap door, the trap door having an arcuate cross-sectional orientation and adapted to be lowered to a first orientation whereby its exterior edge is essentially at the same height as the lower edge of the deck and raised to a second orientation whereby the entire trap door is above the upper surface of the deck for cutting high grass and foliage, the side edges of the trap door being formed in an arcuate configuration with the adjacent side wall of the deck also being in an arcuate configuration whereby when the trap is in the first orientation a generally semi-circular exhaust is formed between the deck and trap door whereby cut grass and foliage may be dispersed therethrough to exterior of the deck; anda trigger mounted on the handle is operatively coupled to the trap door for pivoting the trap door between the raised position and the lower position when in operation and use and further including a bolt to removably couple the blade to the drive shaft with additional means operatively coupling the blade and the drive shaft to allow the blade to cease rotation when it contacts an obstruction.