Design Of A Pneumatic Valve For Automatic Seat Lifting Or Door Opening Mechanisms

Design and fabrication using a designed 5/2 (five ports and two positions) pneumatic valve to automatically lift a cover is presented. Operation of the design utilizes only through mechanical means without using electrical power, electronic sensors, and controllers. Therefore, the system not only saves energy, but also increases operational safety. For light-duty operation, the air can even be supplied by a bellow foot-air pump through a foot pedal, which can also be acted as the single actuating button. When an operator hits the foot pedal, the cover will be opened and remain in the opening position until the food pedal is hit the second time. The operation can be repeated.