Pumps – Combined
Patent
1978-01-26
1980-02-19
Croyle, Carlton R.
Pumps
Combined
192 67R, 192 89B, F04B 3900
Patent
active
041892844
ABSTRACT:
A fan having an air directing grille mounted in the path of air flow includes means for rotating the grille at a speed slower than the speed of rotation of the fan blade. The means for rotation also includes a clutch mechanism having a rotary drive member connected to a drive shaft, a driven member coaxially mounted on the drive shaft in a rotatably free manner, and resilient means in between the drive member and the driven member to engage both and rotate the members together. The resilient means includes a provision to slip the engagement and to permit the rotary drive member to rotate without imparting rotational movement to the driven member when a predetermined restraint of rotation is applied to the driven member.
REFERENCES:
patent: 2611283 (1952-09-01), Askren et al.
patent: 3640363 (1972-02-01), Spalding
patent: 4120615 (1978-10-01), Keem et al.
patent: 4123197 (1978-10-01), Keem et al.
Croyle Carlton R.
Look Edward
Zardana Corporation N.V.
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