| 摘要 |
The present invention is directed to a tool for modifying or interacting with a surface wherein two simultaneous force vectors are applied to the tool so as to control the resulting effect of the tool. In particular, the tool is comprised of a handle, a shaft having a proximal and a distal end, a working face, and a strike plate. The handle is connected to the proximal end of the shaft wherein the shaft has a finite length. At the distal end of the shaft is a working face which may be either integral to the shaft or is a separate element which is durably attached to the shaft. At a point on the shaft between the proximal or handle end, and the distal or working face end, a strike plate is durably attached to the shaft. The strike plate is configured to receiving repeated impact by a drive source. Suitable drive sources include, but are not limited to, manually operated discontinuous devices such as weighted head or dead-blow type hammers as well as continuous service devices such as pneumatic and electrically powered impact hammers. In practical application, an operator applies at least one force vector (FV1) by grasping the handle of the present invention and directing the coinciding work face against a surface by applying force in a direction approximately perpendicular to the surface. Simultaneous to the application by the operator of a force vectored perpendicular to the surface to be treated, the operator applies a drive source to the shaft mounted strike plate. The drive source provides a force vector (FV2) on the tool and the attached working face vectored in a direction approximately parallel to the surface to be treated and at a nominal 90° angle (plus or minus 45° deflection) to the first force vector applied by the operator. By simultaneous application of a perpendicular force vector (FV1) and a parallel force vector (FV2), it is possible for the operator to affect the surface to be treated with the working face of the tool with a high degree of depth control and precision for protracted periods of time. It is further within the purview of the present invention that the operator may apply yet a third force simultaneously upon the tool by applying a torque (FV3) to the handle of the tool. By applying torque the operator can not only control depth but also direction of continuous travel of the tool as the parallel force vector (FV2) induces linear translation between the layers to be de-laminated. The working face of the tool may include one or more functional attributes dependent upon the bonded material layers to be de-laminated (i.e. whether spot welded or chemical adhesive bonded) and the desired effect obtained. Representative functional attributes include, but are not limited to, flat and/or radiused flat profiles, beveled, curved or blunt edges, variable thicknesses and the combinations thereof. Further, the composition of the working face may be the same as or different than the composition of the tool shaft and may be adapted to work with specific substrates such as plastic and metal.
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