Tool for smoothing surfaces.

p0001The invention relates to a tool for smoothing top = areas with a formed from a base, = in = wesent union flat work surface and at this work = surface side facing away this basis arranged hand reached.

p0002Such tools are used for smoothing surfaces of all kinds, for example, as grinding and polishing tools, as rasps, but also for rubbing of coating materials, such as mortar, cement, etc.

p0003Task. the invention is to make the handle of such a tool so that the fingers of the user's hand can rest on the specified for this purpose side of the tool base as comfortable as possible, so that the risk of cramping of the fingers also in long-term ununter = rupted use of the tool is reliably prevented.

p0004Further object of the invention a design of the hand = griffes, which allows the tool arbitrarily, namely in circular or reciprocating motions put ver =, said tool in an as absolutely reliable in the other case and equally favorable from the can be hand held and recorded, without thereby = germuskeln the fin of the risk of premature fatigue subject.

p0005According to the invention to solve these tasks provided that the handle is designed as an at the base eccentrically attached = arranged, oblong designed, between the thumb and forefinger of one hand fitting projection.

p0006The invention is in fact based on the realization that, thanks to this configuration and arrangement of the handle can remain stretched all fingers of the hand of the user during the use of tools, so that the risk of Ver = cramp tion of the fingers is thereby largely eliminated from the outset.

p0007To improve grip of the tool has the advantage in a preferred embodiment of the invention subject matter Er = concave rounded edges and / or ends to provide the thumb and forefinger favorable design bearing surfaces.

p0008To also provide the remaining fingers of the hand, such a good contact surface available, expediently = is, the projection along a side edge of a relative to the plate-shaped base increased, centrally located at the top of this base shelf running disposed of at the protrusion adjacent edge thumb and at the adjoining the protrusion top of this base, the remaining fingers of the hand can be applied. The can be applied on top of this base fingers are therefore able, together with the thumb and forefinger comfortably, namely in the stretched state to put pressure on the tool.

p0009So that - the design of the human hand in accordance with - the thumb can be applied in a deeper level on the handle than the other fingers, it is further provided that the projection from the base, starting at an acute angle of preferably about 45⁰ protrudes obliquely upward and out = ward from the base.

p0010To further improve the feel and handling of the tool, it is advantageous if the serving as a support for the fingers of the hand top of the base at its three projection-free side edge projects beyond the bottom part of the base with an edge strip.

p0011Finally, it is for the position of the hand that holds the work = convincing and used, also advantageous if the top of the base obliquely upward runs uphill against the projecting of this top projection.

p0012Basically the tool can indeed be made of any material, but it has sen as recommended erwie =, the tool in one piece, made of a resilient, before = preferably resilient, material such as a plastic such as polyurethane manufacture. Such a tool can be particularly advantageous to adapt Various kinds of surface treatments of the workpieces or components, which must be added that, thanks to the inventive design of the handle brought about with all the fingers of the user, so practically the whole hand, a respectively desirable deformation and adaptation of the compliant tool can be.

p0013That in the single FIGURE example Darge = presented and discussed below tool has an approximately rectangular and plate-shaped base 1 with an essentially flat surface 2, at the demand = as in any known per se and for present invention insignificant way as can be attached by adhesion, gluing or mechanically by means of fastening members, a grinding or polishing material. 3

p0014On the work surface 2 facing away (upper side) of the base 1 is the handle disposed of in wesent = union as an eccentrically, ie along a side edge, extending, elongated designed, between the thumb 4 and the index finger 5 a hand fitting and Hiezu designed with concave flanks 6 and end surfaces 7 projection is formed. 8 This protrusion 8 is provided along a side edge of against the base 1 raised, centrally located at the top of this base 1 base 9 is provided, adjacent to its ge together with the projection 8 = imaginary flank 6 of the thumb 4 and on which in these projection 8 top 10 the other fingers 5, 11,12 and 13 of the hand of Werkzeugbenutzters are applied.

p0015The protrusion extends from the base 9, starting at an acute angle α, preferably about 45 ° obliquely upwards and out = ward from the base 1, so that the thumb 4 - Off = formation of the human hand in accordance with - at the edge 6 in can abut a lower level than the other fingers 5, 11, 12 and 13. FIG.

p0016Which serves as a support for these other fingers top side 10 of the base 9 surmounted at its three projection-free side edges the lower part of the socket 9 with an edge = bar 14 and to improve the grip of the socket 9 for these other fingers 5, 11, 12 13 serves.

p0017The top 10 of the base 9 rises against the projecting of this top 10 projection 8 with an angle β of about 5 to 10 ° diagonally upwards. Also, this design improves the handling of the tool, by taking consideration to the normal position of the human hand.