To draw a good U.S. patent drawing, you must first have a foundation in mechanical drawing. U.S. patents include three forms: inventions, designs, and new plant varieties. These patent drawings all require a foundation in mechanical drawing. The mechanical drawings mentioned here are The basics of drawing are not only useful in the mechanical field, but are applicable to all patent fields. Because when you are drawing, you must know the corresponding projection relationships of front view, rear view, left view, right view, top view, and bottom view. Because the patent examiner will correspond to your views one by one. If the projection relationship of the painting does not correspond, it will not pass the preliminary examination.
The second is the software aspect. Using CAD drawings to add hatching lines is the slowest method, and its scope of application is also limited. It cannot handle some complex graphics, and the efficiency is also very low. Therefore, it is recommended to use vector-based graphic design software, such as Inkscape, Affinity Designer, Illustrator, etc. Note that the vector-based software mentioned here is not pixel-based graphic design software such as PS. PS is useless at all.
Thirdly, you also need to know some three-dimensional software, such as 3ds Max, Rhino, UG, solidworks and other software, because sometimes customers provide physical objects, and you have to draw the physical objects into three-dimensional drawings and then export the lines. Figure hatched. In addition, some pictures need to be opened or closed, which requires operation in three dimensions.
How to add shadow lines requires some knowledge of sketching. You need to master basic knowledge such as light and dark relationships, structural relationships, basic shapes, perspective relationships, etc. You also need to look more at how other people do it, and plane isometrics. You need to know the basics of hatching, surface gradually widening hatching, and corner dotted hatching.
So the shadow lines of US patents must be drawn well. This is a systematic learning project. It takes continuous practice to draw better and faster.
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