To draw a good American patent map, we must first have the basis of mechanical drawing. American patents include invention, design and new plant varieties, and all of these patent drawings need the basis of mechanical drawing. The basis of mechanical drawing mentioned here is not only useful in the mechanical field, but also applicable to all patent fields. Because you draw pictures, you must know the corresponding projection relationships of front view, back view, left view, right view, top view and bottom view. Because Patent examiners will correspond to your views one by one. The projection relationship of the painting doesn't correspond, and it can't pass the preliminary examination.
Secondly, in terms of software, using CAD to add shading lines is the slowest method, and its application scope is limited, so it can't handle some complex graphics, and its efficiency is very low. Therefore, it is recommended to use vector graphic design software, such as Inkscape, Affinity Designer, Illustrator, etc. Note that what we are talking about here is vector graphic design software, not pixel graphic design software like PS. PS is useless at all
thirdly, you should also know some 3D software, such as 3ds Max, rhinoceros, UG, solidworks and so on, because sometimes customers provide objects, so you have to draw the objects into 3D drawings, and then export line drawings with shading lines. In addition, some diagrams need to be opened and closed, which needs to be operated in three dimensions.
How to add shadow lines requires some sketching knowledge, such as the relationship between light and shade, structural relationship, basic modeling, perspective relationship, and other basic knowledge, as well as watching how others do it, such as equidistant shadow lines on the plane, gradually widening shadow lines on the surface and drawing shadow lines on the corners.
Therefore, it is a systematic learning project to draw the shadow lines of American patents well. It takes constant practice to draw better and faster.
there is also the dotted line in the U.S. patent drawing. The main purpose of using the dotted line is to help explain the design. It is mainly used in two parts, one is to show the structural environment used by the design, and the other is to show the boundary protected by the design claim.
For example, the text in the attached figure below is my contact information. This does not need to be protected, so it can be made into a dotted line.
You can also ask me to draw pictures. I specialize in American patent drawings. Please see the attached drawings for details.