.~ Double acting motor reversed by pressure variation of motive fluid
DEFINITION
Classification: 91/166
(under subclass 165) Apparatus in which the motor is of the double acting type wherein valve means controls the flow of motive fluid to the opposed working member faces in a manner such that the working member will move in one direction when the pressure of the motive fluid being supplied to operate the motor is at a first predetermined magnitude and will move in the opposite direction when the motive fluid supply pressure varies from said predetermined magnitude.
(1) Note. The predetermined magnitude of pressure may include a range of pressure, as for example, the working member may be in one position until the supply pressure drops below 90 psi. and will then move to a second position until the supply pressure increases to 100 psi. at which time the working member returns to its first position.
