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The two types of shading commonly employed in Design Patent Application drawings are straight line surface shading and stippling. Individually or in combination, they can effectively represent the character and contour of most drawing surfaces.
Straight Line Surface Shading
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| Wrist Watch |
Door lock Housing |
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| Antenna Insulator |
Sink |
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| Lawn Sprinkler |
Vacuum Cleaner |
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Toilet Tissue Holder
First Embodiment |
Toilet Tissue Holder
Second Embodiment |
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| Stippling |
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| Puppet |
Shower Caddy |
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Combination of Straight Line Shading and Stippling
Note that both stippling and straight line surface shading, while permissible on the same object to show surface contrast, should not be used together on the same surface. |
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| Door Knob |
Chair |
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| Door Knob |
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Transparent Materials
Note that elements visible behind transparent surfaces should be shown in light, full lines, not broken lines. |
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| Aquarium |
Perfume Bottle |
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| Broken Line Disclosure |
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| Handle Unit |
Cutter |
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Exploded View
An exploded view is only supplementary to a fully assembled view. A bracket must be employed to show the association of elements. |
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| Set of Game Components - Fully Assembled View |
Set of Game Components - Exploded View |
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Alternate Positions
The alternate positions of a design, or an element of the design, must be shown in separate views. |
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| Personal Computer |
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Indeterminate Length
Note the use of a separation and a bracket to indecate that, for ease of illustration, the precise length of the molding is not claimed. |
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| Picture Frame Molding |
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Cross-sectional View
Cross-sections may be employed to clarify the disclosure and to minimize the number of views. |
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| Christmas Tree Stand |
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| Specific Materials |
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| Multi-Pocketed Storage Bag |
Combined Toilet Tissue Holder and Wall Cabinet |
Symbols for Draftsmen
Rule 84(g) states that graphical symbols for conventional elements may be used on the drawing when appropriate, subject to approval by the Office. The symbols and other conventional devices which follow have been and are approved for such use. This collection does not purport to be exhaustive, other standard and commonly used symbols will also be acceptable provided they are clearly understood, are adequately identified in the specification as filed, and do not create confusion with other symbols used in patent drawings.
NOTES: In general, in lieu of a symbol, a conventional element, combination or circuit may be shown by an appropriately labeled rectangle, square or circle; abbreviations should not be used unless their meaning is evident and not confusing with the abbreviations used in the suggested symbols.
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