Machine element or mechanism – Gearing – Pivotally supported
Patent
1988-01-12
1990-05-08
Leung, Philip H.
Machine element or mechanism
Gearing
Pivotally supported
74665GC, F16H 3500
Patent
active
049227661
ABSTRACT:
An electric fan apparatus having a rotatable hub member provided in the central portion thereof and surrounded with a bearing housing through a plurality of bearings; a vertical main shaft connected to a motor shaft via a coupling; a rotary member connected to the hub member; a plurality of fan spindles equally disposed on the rotary member and supported by bearing housings; a base member supporting the apparatus; a column vertically fixed on the central portion of the base; a stem member movably inserted into the column; a tilting device contected between the bottom plate of the housing and the top end portion of the stem member; cooperating elements between the coupling fixedly inserted to the motor shaft and a worm wheel shaft arranged in the housing; a clutch mechanism selectively engaging between the worm wheel shaft and a crank device for angularly moving the rotary member; and connecting elements transmitting power between the main shaft and a plurality of the fan spindles capable of being mounted with a plurality of fan impellers for sending the wind to all directions, e.g. 360 degrees.
REFERENCES:
patent: 1094541 (1914-04-01), Dilg
patent: 1187858 (1916-06-01), Olson
patent: 1763645 (1930-06-01), Caldwell
patent: 2458159 (1949-01-01), Goldthwaite
patent: 4437355 (1984-03-01), Bordat
patent: 4472110 (1984-09-01), Sun Keu
Evans Geoffrey S.
Leung Philip H.
Seong-Do Moon
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