Drive housing for a mowing machine

Details Drive housing for a mowing machine Drive housing for a mowing machine

1987-09-08

1990-02-27

Herrmann, Allan D.

Machine element or mechanism

Gearing

Directly cooperating gears

56 136, 74423, 74606R, 184 612, F16H 114, F16H 5702, A01D 3443

Patent

active

049035380

ABSTRACT:
A mowing machine has a plurality of drive housings that are associated with the cutting units. Each unit has a carrying shaft that rotates a carrying unit which includes a carrying arm, cutting blades, and a covering disc. The carrying shaft is connected by gearing, located within the sealed drive housing, to the mowing machine's drive shaft. When the machine is in operation, the resulting friction within the drive housing causes the lubricants and air therein to expand. A channel is provided in the carrying shaft that opens at its lower end into the drive housing and at its upper end at the top of the carrying shaft under a conically configured cup spring, into a space which is not sealed from ambient pressures. The channel thus functions as a pressure vent to the otherwise sealed drive housing and permits the lubricants and air therein readily to expand and contract. The cup spring protects the channel from receiving any substantial amounts of dust or like contaminants in the air in the vicinity of the mowing machine.

REFERENCES:
patent: 2997894 (1961-08-01), Klein
patent: 3550360 (1970-12-01), van der Lely
patent: 3774466 (1973-11-01), Bhatia et al.
patent: 3965658 (1976-06-01), van der Lely
patent: 3974630 (1976-08-01), van der Lely
patent: 4020715 (1977-05-01), Sollars
patent: 4147227 (1979-04-01), van der Lely
patent: 4166350 (1979-09-01), Werner
patent: 4197692 (1980-04-01), Weber
patent: 4199922 (1980-04-01), van der Lely
patent: 4299077 (1981-11-01), Wattron
patent: 4506562 (1985-03-01), Yamaura et al.

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