Fluid reaction surfaces (i.e. – impellers) – Sustained ancillary movement of rotary working member – Continuous rotor oscillation
Reexamination Certificate
1999-07-27
2001-01-09
Look, Edward K. (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Sustained ancillary movement of rotary working member
Continuous rotor oscillation
C416S110000, C416S1700HM, C415S125000
Reexamination Certificate
active
06171057
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to a table electric fan, particularly to one having a blade set able to sway for 360° within a protective net.
A known conventional table electric fan shown in
FIGS. 7 and 8
, includes a bottom base
10
, a motor housing
20
on the bottom base
10
, a motor contained in the housing
20
, a swaying device
40
, a blade set
50
and a protective net
60
as main components. The swaying device
40
is connected to the spindle of the motor
30
, and the blade set
50
is fixed with a front end of the spindle. Then the motor
30
with the housing
20
can be swayed to the right and the left to blow air in a room to ventilate well.
However, this conventional table electric fan only sways to the right and the left, impossible to send wind to every corner of a room, limited in ventilating effect. In addition, the swaying movement requires a proper space not to collide with things put on a table around the fan.
SUMMARY
The object of the invention is to offer a table electric fan having a blade set to sway for 360° within a limited space, without any fear to collide with other things put on a table when the blade set is swaying.
REFERENCES:
patent: 2050764 (1936-08-01), Rogers
patent: 2964583 (1960-12-01), Braskamp
patent: 4486144 (1984-12-01), Hung
patent: 602284 (1948-05-01), None
patent: 57-74609 (1948-05-01), None
Look Edward K.
McAleenan James M.
Rosenberg , Klein & Lee
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