194 / | HD | CHECK-ACTUATED CONTROL MECHANISMS |
229 | CONTROL MECHANISM RESPONSIVE TO PLURALITY OF CHECKS {3} | |
230 | DF | .~> Including electric circuit with switch operated by check {1} |
232 | DF | .~> Including part locked by detent and released by check {2} |
237 | DF | .~> Check prevents locking of part by detent {1} |