Drawings facilitate the understanding of the patent and the individual elements of the drawings are discussed in the detailed description portion of the specification of a patent or patent application.

Anything that is claimed as part of the invention must be shown in the drawings.

Patent drawings are a particular art form and should not be confused with other mechanical drawings. Patent drawings have to meet rigorous requirements set forth by the United States Patent & Trademark Office and should be made by a competent patent draftsman.