Portable air blower
AssigneeKawasaki Jukogyo Kabushiki Kaisha
InventorTsuneyoshi Yuasa
Life of this patent
Estimating the term…
Abstract
A portable air blower includes a blower fan, a drive unit for driving the blower fan, a casing for covering at least the blower fan and having a side wall with an air intake opening defined therein, and a covering unit for covering the air intake opening. The covering includes an air intake grille fitted to the casing and operable to permit an air to pass therethrough into the air intake opening, but to block foreign matters off therefrom, and a protective shroud held in overlapping relation with the air intake grille for covering the air intake grille on one side of the air intake grille opposite to the air intake opening. The air intake grille has an outermost area having a circumferential edge, which is positioned substantially radially inwardly of an outer peripheral edge of the protective shroud.
Claims20
A portable air blower which comprises:
- a blower fan for producing an air current;
- a drive unit for driving the blower fan;
- a casing for covering at least the blower fan and having a side wall with an air intake opening defined therein;
- and
- a covering unit for covering the air intake opening;
- wherein the covering unit comprises an air intake grille fitted to the casing and operable to permit air to pass therethrough into the air intake opening, but to block foreign matters, and a protective shroud held in overlapping relation with the air intake grille for covering the air intake grille on one side of the air intake grille opposite to the air intake opening,
- wherein the air intake grille includes a base held in contact with the casing and an outermost area substantially opposite to the base, which outermost area is positioned spaced a distance from a plane of the base with a circumferential edge of the outermost area positioned substantially radially inwardly of an outer peripheral edge of the protective shroud and the outermost area of the air intake grille has a flat vertex wall and is held in coaxial relation with a center of the air intake opening and the protective shroud has a boss held in contact with the flat vertex wall of the air intake grille.
A portable air blower which comprises:
- a blower fan for producing an air current;
- a nozzle for directing the air current from the blower fan;
- a drive unit for driving the blower fan about a rotational axis;
- a casing for covering at least the blower fan and having a side wall with an air intake opening defined therein and aligned with the rotational axis;
- an air intake grille connected to the side wall and extending across the air intake opening to enable air to directly flow parallel to the rotational axis into the blower fan;
- and
- a protective shroud, offset from and substantially covering the air intake grille opposite to the air intake opening, to provide a peripheral spaced opening between the air intake grille and the protective shroud to enable air to enter around the peripheral spaced opening and subsequently be directed by the air intake grille wherein the protective shroud prevents operator clothing from interfering with the air flow through the air intake grille, wherein the air intake grille is pivotally mounted to the side wall and spring biased to a closed position over the air intake opening.
A portable air blower which comprises:
- a blower fan;
- a drive unit for driving the blower fan;
- a casing for covering at least the blower fan and having a side wall with an air intake opening defined therein;
- an air intake grille for covering the air intake opening and having a base, which is held in contact with the casing, and an outermost area substantially opposite to the base;
- and
- a protective shroud fitted to an outer area of the air intake grille and having front and rear portions opposite to each other and a center portion substantially intermediate between the front and rear portions;
- wherein the air intake grille is of a shape to converge from the base thereof towards the outermost area with the outermost area positioned spaced a distance from a plane of the base;
- and
- wherein the protective shroud, when viewed from top, is smoothly depressed at the center portion in a direction inwardly of the front and rear portions thereof, wherein the outermost area of the air intake grille has a flat vertex wall and is held in coaxial relation with a center of the air intake opening and the protective shroud has a boss held in contact with the flat vertex wall of the air intake grille.
Dependencies are inferred from the claim text.