The drawings are used to supplement the text in the instruction manual and are an integral part of the instruction manual. The instructions may or may not have drawings depending on the content. However, the utility model description must have accompanying drawings. The description of the drawings in the drawings and the description must match the text and pictures. The drawings may be in the form of basic views, cross-sectional views, schematic diagrams or flow charts. The accompanying drawings only need to fully and accurately express the contents of the instruction manual. Complex charts can generally also be treated as attachments.
The specific requirements for drawings are as follows:
(1) The paper specifications for drawings should be consistent with the instructions, and should adopt the format uniformly formulated by the Patent Office.
(2) The size of the figure requires that when it is reduced to two-thirds, each detail in the figure can still be clearly distinguished. However, in order to ensure the layout accuracy, the graphics should not be too large. If you can't draw on one piece of paper, you can divide it with cut lines and draw on several pieces of paper continuously.
(3) Attached drawings should be drawn using black drawing ink and drawing tools. Pencils, pens, ballpoint pens, etc. are not allowed to be used for drawing. Coloring, photographs, blueprints, and mimeographs are not allowed, but photocopies may be used.
(4) The graphic lines should be uniform and clear, suitable for copying requirements.
(5) The graphics should be arranged vertically as much as possible. If they are to be arranged horizontally, the upper part of the graphics should face the left side of the drawing.
(7) Except for a small amount of simple text, such as water, steam, on, off, A-A section, etc., there should be no other annotations in the attached drawings. The size of an object generally does not need to be marked in the drawings, unless the size relates to the invention itself and requires special explanation of the size in the description.