Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Reexamination Certificate
2001-07-23
2002-12-03
Thomas, Alexander S. (Department: 1772)
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
C428S099000, C428S066500
Reexamination Certificate
active
06489011
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a method of repairing a vehicle body, and more particularly to a method of repairing the damage of the outside plate panel of a vehicle such as a motor vehicle and a method of calculating the amount of a repair work.
Further, the present invention relates to a tool to be used for the repair work of a vehicle, and more particularly, to a tool employed when the damage of the outside plate panel of a vehicle is repaired.
2. Description of the Related Art
In order to repair dents on the outside plate panel of a vehicle such as a motor vehicle, there is conventionally known a vehicle repairing method in which the panel is struck out for repair from the back side of a damaged part by a hammer or the like, or a vehicle repair work in which steel washers or pins are electrically welded to the surface of a damaged part and the washers or pins welded to the surface are pulled out using a tool so as to repair the panel.
For example, according to the method of repairing the vehicle by pulling out the washers or pins, after the coat film of the damaged part is stripped, many washers are electrically welded to the surface of the damaged part by a washer welding machine, and a hook at the end of a slide hammer is engaged with the washers welded to the surface of the damaged part so that the panel of the part to which the washers are welded is pulled out or drawn out under the impact force of the slide hammer.
However, according to the above described method of pulling out washers, a part to be pulled out, in other words, a place to which the washers are welded has been set on the basis of the experience of an operator. Therefore, the place to which the washers are welded and the number of washers to be welded for the same damage have been different between operators because of the difference in experience of the operators. As described above, it has been difficult for all operators to desirably set a place to be pulled out which is most suitable for a repair work. Particularly, it has been very difficult for an operator having little experience to set a position to be pulled out, and hence the number of welded washers has been apt to be excessively increased, resulting in increase of a work time.
Further, according to an ordinary panel pulling out process for a repair, the central part of a dent in a damaged part which is most badly recessed is first pulled out, and then, the remaining part or the edge part of the dent is pulled out to repair a panel. However, if the central part of the dent is first pulled out, the central part may possibly swell or expand when the edge part of the dent is pulled out later. This phenomenon occurs because of a fact that the previous panel pulling work at the central part of the damaged part is excessively carried out. Generally, it has been very hard to adjust the panel pulling-out work in the central part of the damaged part. Consequently, the repair work has been undesirably increased.
Further, as a pretreatment of the panel pulling-out work, the coat film of a damaged part needs to be stripped therefrom. The stripping work of the coat film is liable to be carried out within a wider area. Since, in the case where it is decided that the stripping work of the coat film needs to be further carried out once the stripping work of the coat film is finished to shift to a subsequent panel pulling-out work, it is extremely troublesome to return to the stripping work of the coat film, the stripping work of the coat film is carried out in a wider area. However, when the coat film-is stripped within a wider area, it disadvantageously takes time more than necessary for a coat film stripping work itself. In addition, a restoring material such as a putty or a paint and repairing time must be consumed in order to restore the surface of the panel from which the coat film is stripped.
As described above, upon repair of a damaged part, a work area, the amount of materials to be used and work time, which is required to repair the same damage, will be different depending on the operators. Therefore, it has been hitherto impossible to previously calculate a detailed amount of work such as a work area or work time or the like.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide a repairing method and a repairing tool liable to repair the damaged part of the outside plate panel of a vehicle in a short time. Further, it is another object of the present invention to provide a repairing method and a repairing tool by which even an operator having little experience can readily and assuredly repair the damaged part of the outside plate panel of a vehicle.
Further, it is another object of the present invention to provide a repairing method and a repairing tool by which the damaged part of the outside plate panel of a vehicle can be repaired at low cost.
Furthermore, it is still another object of the present invention to provide a calculating method of previously calculating the amount of work necessary for a repair work of the damaged part of the outside panel of a vehicle.
According to a first aspect of the present invention, the above described objects can be achieved by providing a method of repairing the damage of a panel of a vehicle body comprising the steps of: (a) marking points at a damaged part of the panel, which are distributed in a range from the central part to the outer edge parts of the damaged part; and (b) pulling out the panel at the marked points successively from the outer points to the inner points of the points.
Each of a plurality of points belongs to any of a plurality of areas extending stepwise from the central part to the outer edge parts of the damaged part in the step (a) and, after the panel is pulled out at the respective points of the outer areas, the panel can be pulled out in the respective points of the inner areas in the step (b).
Further, each of a plurality of points can be located within a prescribed distance from the boundary of the respective areas in the step (a).
Further, the points can be divided into first points essentially requiring a pulling-out work and second points requiring a supplementary pulling -work in the step (a).
Still further, the method further comprises, between the steps (a) and (b), a step (c) of stripping a coat film located within a range surrounded by an outer peripheral line for connecting the outermost points together.
According to a second aspect of the present invention, the above described objects can be achieved by providing a method of repairing the damage of a panel of a vehicle body comprising the steps of: (a) marking points at a damaged part of the panel, ranging from the deepest part to the shallowest part of the damaged part of the panel; and (b) pulling out the panel at the points successively from the shallowest point to the deepest point of a plurality of points.
According to a third aspect of the present invention, the above mentioned object can be attained by providing a method of calculating the amount of a repair work of a vehicle body in which time necessary for a repair work of a vehicle body is calculated, the method comprising the steps of: (a) marking pulling-out points of a damaged part at prescribed intervals in the damaged part of the panel of the vehicle body; (b) counting the number of points marked in the step (a); and (c) calculating time necessary for a repair work in the damaged part by multiplying the points counted in said step (b) by prescribed time.
According to a fourth aspect of the present invention, the above described object can be realized by providing a method of calculating the amount of a repair work of a vehicle body in which a work area for repairing the vehicle body is calculated, the method comprising the steps of: (a) marking pulling-out points of a damaged part at prescribed intervals in the damaged part of a panel; a step (b) of calculating the points marked in the step (a); and (c) calculating the work area for the repair work in the damaged
Burr & Brown
Thomas Alexander S.
Uegaki Tateo
LandOfFree
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