
Using Patterns to Illuminate Research Practice ◾ 147
Table 6A.1 The 40 TRIZ Inventive Principles (continued)
No.
TRIZ Inventive
Principle Description
P11
Cushioning in
advance
b
Prepare emergency means in advance to compensate
for relatively low reliability of an object.
P12
Equipotentiality Limit potential changes in a potential eld (e.g., in a
gravitational eld, change operating conditions to
eliminate the need for raising or lowering objects).
P13
Doing the
opposite
Invert the actions(s) used to solve a problem (e.g., heat
an object instead of cooling it). Make movable parts
(or the external environment) xed and the xed parts
movable. Turn the ...