A Quality patent application drawing, in current example uses a mesh topology description of a system in mathematical terms. An unambiguous, clear and precise description of the invention is achieved:

a. The parts of a drawing are assigned numbers in a hierarchical way.
Thus, the main parts of a system are assigned one-digit numbers such as 1, 2, 3... The components of part 1 are assigned the numbers 10, 11, 12, 13...
Thus, when one encounters for example part number 3142, he understands it belongs to part 314, and ultimately to the main part 3 of the system.

In this example, all the parts in the drawing belong to unit 458.
Further details on parts numbering - see below.

b. The inputs/outputs of each component may also be assigned a number or letter each. In a preferred embodiment, letters are used, so chosen as to convey a meaning, for example:
inputs: the letters A - I
outputs: J - O
i/o : P - W
special: X-Z

c. The links between the parts may also be numbered. These links may be just connections, or may convey a meaning, for example:

1 Placed above
2 Placed under
3 Attached to ... by glue
4 Coupled using detachable tube
5 Coupled using high pressure tube
6 Coupled using metallic tube
7 Connected using a rotary joint
8 Connected using electrical wire
9 Connected with high frequency wire
10 Connected via fiber optic
11 Connected through waveguide
... no direction indicated; unidirectional; bidirectional

d. The drawing can now be described as a set of connectivity equations or a table:

From To Connection Bidir

4581.J 4582.A 4571 0
4582.J 4581.A 4570 0
4582.K 4583.A 4572 0
4584.M 4582.B 0
4583.P 4584.R 4573 1
4583.M 4587.I 4574 0
...

The first line, for example, indicates: output J of part 4581 is connected to input A of part 4582 using the connection 4571 (this may be a specific function or type of relation between the parts, to be detailed elsewhere).
The connection is unidirectional (NOT Bidirectional).

e. A table indicating the type of each component may be prepared, for example:

No. Type

4581 Fuel tank
4582 Pump
4583 Engine
4584 Computer


Thus, the Fuel tank 4581 is connected through the Pump 4582 to the Engine 4583;
the Computer 4584 controls the operation of the pump 4582, etc.

A new component may be defined and detailed in terms of known components or mathematic equations.

f. Analysis of the drawing in the system. This, assuming the system has a list of terms (component types) used in various applications. For each such part, the system may include a mathematical description of its function and can use mathematical simulation techniques to analyze it.

The system can then "understand" the drawing, and use it in various applications: to check the correctness and completeness of the drawing, to search for similar drawings in prior art, etc.

A Provably correct structure may be achieved - provable by computer simulation to prove its operation as claimed, for example.

g. Functional link of the description and the text, using a concise description in the text relating to the drawing.

Patentability criteria:

The application should explain why the invention is useful, a practical application. It should also detail the function of the invention - what the invention does when used as disclosed (Arrhythmia, 958 F.2d at 1057, 22 USPQ2d at 1036.

Drawings are powerful tools to make a point in this aspect.