Fluid reaction surfaces (i.e. – impellers) – Sustained ancillary movement of rotary working member – Continuous rotor oscillation
Patent
1996-12-09
1998-09-01
Verdier, Christopher
Fluid reaction surfaces (i.e., impellers)
Sustained ancillary movement of rotary working member
Continuous rotor oscillation
416 98, 416108, 416169R, 416170R, 74425, 74606R, F04D 2510
Patent
active
058001263
ABSTRACT:
A swinging head gear shell for an electric fan is provided and includes a body and a cover respectively molded from reinforced engineering plastics. The body has a mounting plate for mounting with screws, a first open top chamber and a second open top chamber linked in parallel and adapted for receiving a swinging head gear. The body has a plurality of screw holes for the mounting of the cover, and a vertical locating barrel through which one gear shaft of the swinging head gear passes. The mounting plate has a circular through hole through which the worm of the swinging head gear passes. The cover overlays the body to close the first open top chamber and the second open top chamber, and has a plurality of mounting holes respectively fastened to the top screw holes of the body by screws. The cover has a raised portion, and a through hole formed in the raised portion in communication with the second open top chamber for the control lever of the swinging head gear to pass.
REFERENCES:
patent: 863556 (1907-08-01), Priest et al.
patent: 2253127 (1941-08-01), Koch
patent: 3625633 (1971-12-01), Nelson
patent: 5584207 (1996-12-01), Paul et al.
Klein David I.
Lee Jun Y.
Rosenberg Morton J.
Verdier Christopher
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