194 / | HD | CHECK-ACTUATED CONTROL MECHANISMS |
|
302 | DF | INCLUDING MEANS TO TEST VALIDITY OF CHECK {4} |
303 | DF | .~ By testing material composition {4} |
304 | | .~.~ Having electric circuit completed by check {7} |
305 | DF | .~.~.~> Circuit includes thermocouple |
306 | DF | .~.~.~> Circuit includes three or more contacts |
307 | DF | .~.~.~> Circuit includes movable contact {1} |
310 | DF | .~.~.~> And means to impart thrust to check {1} |
312 | DF | .~.~.~> And means to stop check at contact {1} |
315 | DF | .~.~.~> Circuit includes spring contact |
316 | DF | .~.~.~> Circuit includes elongated contact (e.g., long slide, etc.) |