Pumps – Motor driven – Electric or magnetic motor
Reexamination Certificate
2000-09-29
2002-04-02
Walberg, Teresa (Department: 3742)
Pumps
Motor driven
Electric or magnetic motor
C416S005000
Reexamination Certificate
active
06364638
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a ceiling fan structure.
2. Description of the Related Art
A conventional ceiling fan in accordance with the prior art shown in
FIG. 8
comprises a main shaft
61
, a motor
60
, a rotary disk
62
, and a plurality of blades
63
. The rotary disk
62
is rotated by the motor
61
so as to rotate the blades
63
. However, each of the blades
63
has a fixed position and is rotated concentrically so that the direction of wind generated by rotation of the blades
63
is fixed and constant without variation, thereby decreasing the ventilating effect of the ceiling fan.
SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, there is provided a ceiling fan structure comprising:
a central shaft;
a rotary disk rotatably mounted on a lower end of the central shaft;
at least two hanging fans each secured on the rotary disk to rotate therewith;
a conducting power set mounted between the central shaft and the rotary disk and including:
a conducting bushing secured on the central shaft and electrically connected to a power supply;
a support base secured on the rotary disk and located beside the conducting bushing so that the support base is rotated with the rotary disk about the conducting bushing; and
a plurality of conductors each secured on the support base to rotate therewith and each electrically contacting with the conducting bushing, each of the conductors electrically connected to the at least two hanging fans for supplying electric power to the at least two hanging fans; and
a rotation retaining set mounted between the central shaft and the rotary disk and including:
a gear secured on the central shaft;
a substantially U-shaped support bracket secured on the rotary disk to rotate therewith and having an upper support plate and a lower support plate;
a support axle mounted in the support bracket and located between the upper support plate and the lower support plate;
a reduction gear mounted on the support axle and meshing with the gear;
a rubbing block mounted on the support axle and urged between the reduction gear and the upper support plate of the support bracket; and
a spring mounted on the support axle and having a first end urged on the reduction gear and a second end urged on the lower support plate of the support bracket.
In accordance with another aspect of the present invention, there is provided a ceiling fan structure comprising:
a central shaft;
a rotary disk rotatably mounted on the central shaft and including a pivot disk pivotally mounted on a lower end of the central shaft, and a pivot base secured on the pivot disk to rotate therewith;
a support bracket mounted on the rotary disk and including at least two pairs of opposite parallel support bars each having a first end and a second end, the first end secured to the pivot base of the rotary disk to rotate therewith, and at least two locking rings each rotatably and adjustably mounted between the second ends of two adjacent support bars to move therewith; and
at least two hanging fans each secured in the locking ring of the support bracket to move therewith.
In accordance with another aspect of the present invention, there is provided a ceiling fan structure comprising:
a central shaft;
a rotary disk rotatably mounted on the central shaft and including a pivot disk pivotally mounted on a lower end of the central shaft, and a pivot base secured on the pivot disk to rotate therewith;
a support bracket mounted on the rotary disk and including at least two pairs of opposite parallel support bars each having a first end and a second end, the first end secured to the pivot base of the rotary disk to rotate therewith, and at least two locking rings each rotatably and adjustably mounted between the second ends of two adjacent support bars to move therewith;
at least two hanging fans each secured in the locking ring of the support bracket to move therewith;
a conducting power set mounted between the central shaft and the rotary disk and including:
a conducting bushing secured on the central shaft and electrically connected to a power supply;
a support base secured on the rotary disk and located beside the conducting bushing so that the support base is rotated with the rotary disk about the conducting bushing; and
a plurality of conductors each secured on the support base to rotate therewith and each electrically contacting with the conducting bushing, each of the conductors electrically connected to the at least two hanging fans for supplying electric power to the at least two hanging fans; and
a rotation retaining set mounted between the central shaft and the rotary disk and including:
a gear secured on the central shaft;
a substantially U-shaped support bracket secured on the rotary disk to rotate therewith and having an upper support plate and a lower support plate;
a support axle mounted in the support bracket and located between the upper support plate and the lower support plate;
a reduction gear mounted on the support axle and meshing with the gear;
a rubbing block mounted on the support axle and urged between the reduction gear and the upper support plate of the support bracket; and
a spring mounted on the support axle and having a first end urged on the reduction gear and a second end urged on the lower support plate of the support bracket.
Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.
REFERENCES:
patent: 4391570 (1983-07-01), Stutzman
patent: 4560321 (1985-12-01), Kawai
patent: 4640668 (1987-02-01), Yang
patent: 4720241 (1988-01-01), Marwardt
patent: 4878806 (1989-11-01), Marwardt
patent: 5443625 (1995-08-01), Schaffhausen
patent: 5668920 (1997-09-01), Pelonis
patent: 6074182 (2000-06-01), Matson
patent: 6146191 (2000-11-01), Kerr et al.
patent: 62121896 (1987-06-01), None
Baxley Charles E.
Fastovsky Leonid M
Pan Air Electric Co., Ltd.
Walberg Teresa
LandOfFree
Ceiling fan structure does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ceiling fan structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ceiling fan structure will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2922311