192 clutches and power-stop control – Clutch and brake – Same member
Patent
1977-06-23
1980-10-07
Krizmanich, George H.
192 clutches and power-stop control
Clutch and brake
Same member
192 17R, 192105CD, 56 113, 188259, F16D 6702
Patent
active
042263123
ABSTRACT:
The disclosure provides for a number of improvements in a brake-clutch mechanism wherein a drum is carried on the drive member for driving engagement by clutch shoes carried by the driven member. The clutch shoes are normally biased into driving engagement with the drum and a brake band is utilized to move the clutch shoes out of engagement with the drum and to stop rotation of the driven member without interrupting the rotation of the drive member. The improvements relate to a higher torque capability for the mechanism, the exclusion of foreign matter from the mechanism, the mounting for the brake band, the use of the brake band to aid in keeping the braking surfaces clean, and provision for cut-off of the power source in the event the brake band should fail. The disclosure further contemplates a novel arrangement for driving and controlling the chain sprocket of a chain saw.
REFERENCES:
patent: 1483259 (1924-02-01), Wyland
patent: 1513864 (1924-11-01), Schmidt
patent: 2373462 (1945-04-01), Crow
patent: 2675103 (1954-04-01), Weber
patent: 2992707 (1961-07-01), Lewis
patent: 3253391 (1966-05-01), Mendahl
patent: 3313330 (1967-04-01), Hoch et al.
patent: 3732954 (1973-05-01), Heid
patent: 3934345 (1976-01-01), Hirschkoff
patent: 3982616 (1976-09-01), Bidanset
patent: 3991469 (1976-11-01), Frederickson
patent: 3991864 (1976-11-01), Muller
patent: 4044533 (1976-05-01), Wick
patent: 4090595 (1976-06-01), Zindler et al.
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