Rotating device for an illusion-raising protective net of an ele

Details Rotating device for an illusion-raising protective net of an ele Rotating device for an illusion-raising protective net of an ele

1994-07-06

1995-12-12

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Protective screen or guard

Water or marine propellers

415125, F04D 2970

Patent

active

054744261

ABSTRACT:
A rotatable device for a protective net of an electric fan including a vertical base, a synchronous motor fixed on a rear surface of the base, a gear fixed on the shaft of the motor, a first sleeve supported on the shaft of the motor of an electric fan and fitting through a center hole of the base to fit around a rear small diameter shaft hole of a rotatable sleeve and then to engage a rotatable sleeve locking nut fitted in a front large diameter shaft hole of the rotatable sleeve, a net locking nut engaging a male threaded portion of the rotatable sleeve to secure the net ring of the protective net of an electric fan with the rotatable sleeve having a gear portion to engage the gear so that the protective net may be rotated by the rotatable sleeve.

REFERENCES:
patent: 2336295 (1943-12-01), Reimuller
patent: 3262638 (1966-07-01), Militello
patent: 4743737 (1988-05-01), Tateishi
patent: 5368453 (1994-11-01), Peng

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