| 194 / | HD | CHECK-ACTUATED CONTROL MECHANISMS |
| 293 | DF | INCLUDING NONCONTACTING, RELATIVELY MOVABLE PARTS CONNECTED BY CHECK {2} |
| 294 | DF | .~ And means to impart thrust to check to move part {2} |
| 295 | DF | .~.~ Having pivoted part {2} |
| 298 | DF | .~.~.~ And linearly reciprocating part {1} |
| 299 | ![]() | .~.~.~.~ Both parts spring biased |