Agitating – Operator supported
Reexamination Certificate
2000-07-07
2001-08-14
Cooley, Charles E. (Department: 1723)
Agitating
Operator supported
Reexamination Certificate
active
06273601
ABSTRACT:
BACKGROUND OF THE INVENTION
The invention relates to a power mixer comprising a drive unit with a drive motor for driving a paddle rod, a handle arrangement with two handles arranged on either side of the axis of the paddle rod for two handed holding of the power mixer during mixing and a holding frame attached to the housing of the drive unit.
THE PRIOR ART
Such power mixers to be held in both hands are more particularly employed in various trades and serve for the mixing of liquids, which may be viscous, and other materials as for example mortar, plaster, screed compositions for floors, adhesives or paints.
Power mixers have already been proposed, in the case of which one of the handles is arranged on the drive unit and the other one is arranged on a holding frame connected with the drive unit. If the mixer is placed on the ground, for example for a pause between mixing operations or for changing the paddle rod, there is a danger of the paddle rod coming into contact with the floor near it and of soiling the floor or itself picking up dirt from the floor.
SHORT SUMMARY OF THE INVENTION
The present invention is intended to provide a remedy in this respect by providing a design in which both handles are arranged on both sides of the drive unit on the holding frame and the holding frame defines a support face to which a normal is athwart axis of the paddle rod, such support face allowing the mixer to be put down on an adjacent floor area with the paddle rod clear of the floor.
Accordingly there is a holding frame, which constitutes the two handles, so that no separate drive unit with its own handle is necessary. Furthermore, it is possible for the power mixer to be placed on the ground when not in use without the paddle rod touching the floor.
It is convenient for the support face to be constituted by a stand of the holding frame, one of the handles being arranged on the stand. This means that the stand may perform a second function as a handle by which the mixer may be held.
The stand part forming the handle may have a grip sleeve, more particularly of polyurethane, produced by forming a foam layer.
In the case of a preferred embodiment there is a provision such that the two handles project past the drive unit on the top side of the unit opposite to the paddle rod and together constitute a stand means, allowing the power mixer to be put down on the adjacent floor with the paddle rod directed away from the floor. Accordingly the mixer can not only be put down using the support stand with the paddle rod in parallelism to the adjacent floor but also using the stand means, formed by the two handles, with the paddle rod pointing upward. This position is more especially an advantage for fitting or changing the paddle rod.
The handle opposite to the stand preferably extends essentially perpendicularly to the plane of the stand so that such handle, the drive unit and the middle of the translation rib of the U-like member, as seen looking in the direction of the axis of the paddle rod, are substantially flush on a single line.
In the case of an embodiment of the invention which is particularly advantageous as regards handling there is a provision of an on-off switch for the drive motor arranged on one of the handles and preferably on the handle opposite to the stand. In this case it is possible for the power cable to extend between the drive unit and the on-off switch in a piece of tube so that it is protected and out of sight.
Further advantageous developments of the invention are defined in the claims.
One embodiment of the invention will now be described with reference to the accompanying drawings.
REFERENCES:
patent: 1051331 (1913-01-01), Holtman
patent: 1856065 (1932-05-01), Austin
patent: 1928965 (1933-10-01), Dormeyer
patent: 2093586 (1937-09-01), Day
patent: 2430817 (1947-11-01), Jackson
patent: 2552023 (1951-05-01), Andresen
patent: 2598565 (1952-05-01), Lagant
patent: 2975848 (1961-03-01), Roberts
patent: 3166303 (1965-01-01), Chapman
patent: 3333831 (1967-08-01), Chapman
patent: 3828861 (1974-08-01), Verkuil
patent: 5772318 (1998-06-01), Vadnais
Hlávka Kv{haeck over (e)}toslav
Kirchner Manfred
Cooley Charles E.
Hoffmann & Baron , LLP
Narex Ceska Lipa, A.S.
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