A guard is a device designed to prevent injury from rotating machinery.
Three concentric and rotating shafts would be known as a contra-rotating device. Currently, several machines like these are being designed, according to the US Patent Office.
a device that uses a positive means such as a lock to hold an energy isolating device in a safe position and prevent the energizing of the equipment and/or machinery being worked on
A guard is a movable device that provides a physical barrier between you and the point of operation. Guards are commonly used in machinery to protect individuals from potential hazards such as rotating parts or sharp edges.
A rotating amplifier is a type of electronic device that enhances weak signals by using a rotating mechanism to improve signal strength or quality. It often employs rotating components to modulate the signal, which can help in applications like audio amplification or radio frequency transmission. These amplifiers can provide better performance in specific settings, such as in rotating machinery or systems that require dynamic adjustments. However, they are less common than traditional amplifiers in most applications.
A tachogenerator is a type of electromechanical device that generates an electrical signal proportional to the rotational speed of a shaft or motor. It typically consists of a rotor attached to the rotating shaft and a stator with coils that produce the electrical signal as the rotor spins. The generated signal can be used to measure and monitor the speed of the rotating machinery.
A weightlifting device that must be prevented from rotating is called a non-rotating or fixed lifting beam. This type of lifter is designed to carry loads in a stable and secure manner without the risk of twisting or turning.
There are lots of device that rotate; one of them is a wheel.
A wheel clamp, is a device that is designed to prevent vehicles from being moved. In it's most common form, it consists of a clamp that surrounds a vehicle wheel, designed to prevent removal of both itself and the wheel.
a propeller
a Propeller
a engine
knuckle joint