192 clutches and power-stop control – Clutch and brake – Peripheral brake
Patent
1985-09-27
1987-09-29
Bonck, Rodney H.
192 clutches and power-stop control
Clutch and brake
Peripheral brake
56 113, 192 75, 192102, F16D 6702, A01D 6908
Patent
active
046963812
ABSTRACT:
A belt or chain-operated clutch and brake apparatus for lawnmowers which is mounted above the blade shroud or housing, and includes a shaft with a cooperating split drum assembly having a hub keyed to the shaft and oppositely-disposed, spring-loaded brake shoes bolted to opposed drum segments and pivoted to the hub plate attached to the hub. At least one drive pulley is freely rotatable on the shaft above the split drum assembly and carries a pulley drum which is shaped to define a round, downwardly extending drum flange located between the brake shoes and the drum segments in the split drum assembly. The brake shoes are biased into contact with the drum flange of the pulley drum in order to effect rotation of the split drum assembly and the shaft when the pulley is driven by a V-belt. A brake band encircles the drum segments in the split drum assembly and is secured to a fixed post at one end and a movable post at the opposite end for selectively tightening on the drum segments. Pressure exerted on the brake band pivots the drum segments and brake shoes inwardly away from the pulley drum, stops rotation of the lawnmower blade and allows the drive pulley to freely rotate on the shaft.
REFERENCES:
patent: 4041679 (1977-08-01), Seifert et al.
patent: 4044533 (1977-08-01), Wick
patent: 4205737 (1980-06-01), Harkness et al.
patent: 4307558 (1981-12-01), Bent et al.
patent: 4416107 (1983-11-01), Hoff
patent: 4565268 (1986-01-01), Yamamoto et al.
Bonck Rodney H.
Harrison John M.
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