5.134. Should figures of drawings be arranged in a particular manner? All the figures constituting the drawings must be grouped together on a sheet or sheets without waste of space, but clearly separated from each other. However, figures should not be separated by lines.
5.135. As far as possible, all figures of the drawings should be set out upright on the sheets. Where the drawings cannot be presented satisfactorily in an upright position, they may be placed sideways, with the tops of the drawings on the left-hand side of the sheet. Thus, a figure which is broader than it is high, may be set out so that the bottom of the figure lies parallel to and along the right-hand side of the sheet. In this case, if other figures are drawn on the same sheet, they should be set out in the same way, so that all the figures on a single sheet lie in the same position. Similar considerations apply to tables and chemical and mathematical formulae (see paragraphs 5.107 and 5.109).
5.136. The drawings should contain as many figures as may be necessary to adequately show the claimed invention. The views may be plan, elevation, section, or perspective views; detail views of portions or elements, on a larger scale if necessary, may be used. Exploded views, with the separated parts of the same figure embraced by a bracket, to show the relationship or order of assembly of various parts, are permissible. One figure should not be placed upon or within the outline of another figure.
5.137. Where an invention concerns improvements to details of existing devices and machines, a general figure may be desirable to indicate where on the device or machine the improvement is situated, in order to ensure that the drawings are readily understood. If, for example, the invention relates to the fixing of an elastic diaphragm in a diaphragm pump, a figure – generally the first – may represent the entire pump, as improved by the invention, the details of which will then be given in the other figures. On the other hand, it would be unnecessary to represent the entire machine comprising this diaphragm, for example the automobile in which the diaphragm pump circulates the fuel.
5.138. It is sufficient to choose the views which are the most representative and contain the minimum of hidden parts, so that the object is completely and unambiguously defined by means of the smallest possible number of views. To this end, it is sometimes sufficient to replace the various views of an object by a single perspective view. The simplest view compatible with the desired result should be chosen.
5.139. Where figures on two or more sheets form in effect a single complete figure, the figures on the several sheets must be so arranged that the complete figure can be assembled without concealing any part of any of the figures appearing on the various sheets. Partial figures drawn on separate sheets must always be capable of being linked edge to edge, that is to say, no partial figure may contain parts of another partial figure. A very long figure may be divided into several parts placed one above the other on a single sheet. However, the relationship between the different parts must be clear and unambiguous. It is therefore recommended that a smaller scale figure be included showing the whole formed by the partial figures and indicating the positions of the parts shown.
Date retrieved: 24 November 2017