| 摘要 |
A brake or clutch pedal actuated safety switch for use with an automotive speed control system is disclosed. The switch opens an electric circuit and admits atmospheric air to a vacuum line when the brake pedal or clutch pedal is depressed. The electric circuit normally opens first to deactivate the speed control system electrically at the system's regulator, and the vacuum line is opened subsequently to act as a backup for deactivation of the system. A rotatably mounted lever member, biased by a spring toward the deactivating position, controls both the electric and the vacuum circuits. When the pedal is fully released and returned to its undepressed position, a tension line rotates the lever member against the bias of the spring to a position wherein the electric circuit and the vacuum line are closed. |
