Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Reexamination Certificate
1999-06-21
2001-02-06
Till, Terrence R. (Department: 1744)
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
C015S405000, C417S239000
Reexamination Certificate
active
06182329
ABSTRACT:
CROSS-REFERENCES TO RELATED APPLICATIONS
Not Applicable.
BACKGROUND OF THE INVENTION
1.Field of the Invention
The present invention relates to a portable air blower.
2.Description of the Related Art
People often start charcoal fires in barbeque grills when participating in outdoor recreation. However, they often use articles such as newspapers or paper plates to fan the fire. In such a manner, not only is it necessary to manually fan the fire that requires a lot of energy, the air does not go where it is most needed, at the base of the fire. The present invention has arisen to solve the these problems.
BRIEF SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, a portable air blower comprises a housing including an air inlet and an air outlet, a fan rotatably mounted in the housing, a gear train attached to the housing to rotate the fan, a drive shaft having a first end and a second end, the first end secured to the gear train to operate the gear train, and a crank arm secured to the second end of the drive shaft to rotate the drive shaft.
The housing includes two casing halves coupled with each other, each of the two casing halves containing an air inlet near the center. The fan includes a driven shaft having a first end secured in the fan to rotate the fan, and a second end extending out through a one of the casing halves. The gear train includes a drive pinion secured on the second end of the driven shaft to rotate the driven shaft, a drive gear meshing with the drive pinion, a first pinion secured to the drive gear to rotate therewith, and a first gear secured on the first end of the drive shaft to rotate therewith, and meshing with the first pinion. The gear train also includes an axle extending through the drive gear and the first pinion.
The portable air blower also comprises a gear cover secured to the one of the two casing halves with a gear casing extension to receive the gear train therein, a handle attached to the housing, and a guide pipe attached to the air outlet of the housing.
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: 879580 (1908-02-01), Pearsall
patent: 1666350 (1928-04-01), Pitt
patent: 1668357 (1928-05-01), Davenes
Gardere & Wynne, L.L.P.
Till Terrence R.
Warren, Jr. Sanford E.
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