Abstract: A rotating device for a diesel motor comprises a unit having a plurality of pneumatic cylinders that can be brought into mating engagement with teeth on a flywheel of the motor. Each pneumatic cylinder, under the control of a control unit, is actuated and sequentially pushed into the teeth such that a counter-clockwise or clockwise rotation is possible.

Abstract: A telescopic boom with a multistage, lockable hydraulic cylinder is provided with a protection against lateral buckling of the hydraulic cylinder, said hydraulic cylinder being supported by the more rigid boom members (telemembers). For this purpose, a multipart supporting device is provided, one part of said supporting device being secured to at least one unit of the multistage hydraulic cylinder and the other part thereof being secured to the inner wall of the at least one telemember. The two parts of the supporting device are continuously in engagement with one another so that the desired protection against buckling of the hydraulic cylinder will be guaranteed at all positions of the boom. Furthermore, suitable measures guarantee that, starting with the cylinder unit having the largest cross-section, it is always the cylinder unit having the next smaller cross-section which, in an orderly sequence, is first fully extended, the reverse order being observed during the retraction process.

Abstract: In a mechanism for extending or retracting a telescopic unit, the plurality of interconnected cylinders includes an extension passage, a retraction passage and a flow-through passage interconnected to provide a flow path of a retraction signal from the first to the last cylinder and sequencing means for transmitting the retraction pressure signal sequentially from the last cylinder to the first cylinder to initiate retraction from an extended position beginning with the last cylinder. A poppet control check valve provides a position sensitive means to transmit the retraction signal to the next cylinder in the cycle. The sequence control valves and hold loading valves were formed integral to each of the cylinders. The load holding mechanism prevents unintentional extension and retraction movement under the action of the load for each of the cylinders.

Abstract: The piston rods (10, 12, 14) of three linear hydraulic motors (M1, M2, M3) are stationary and include fluid pressure passageways (40, 52, 42, 54, 44, 56) which direct fluid pressure into and out from working chambers (16, 34, 18, 36, 20, 38) on opposite sides of piston heads (22, 24, 26). Movable cylinder barrels (16, 18, 20) are connected to a load, e.g. floor members (FM1, FM2, FM3) of a reciprocating floor conveyor (FIG. 18 ). The outer ends of the piston rods (10, 12, 14) include balls and the balls include ports (46, 58, 48, 60, 50, 62) through which fluid pressure is delivered or removed. Associated with each port is a limit valve LV1, LV2, LV3, LV4, LV5, LV6. Limit valves (LV1, LV2, LV3) are pushed into an open position by a retraction of the motors (M1, M2, M3). Limit valves (LV4, LV5, LV6) are pulled into an open position by extension of motors (M1, M2, M3). The limit valves (LV1, LV2, LV3, LV4, LV5, LV6) include springs biasing them into closed positions.

Abstract: Piston rods of three linear hydraulic motors are connected at their outer ends to two spaced apart transverse frame members. A cylinder housing is driven back and forth along each pair of piston rods. Three transverse drive beams are provided. Each drive beam is directly connected to an associated one of the cylinder housings. Three sets of floor slat members are provided. Each set is connected to an associated one of the transverse drive beams. The linear hydraulic motors are operated for moving the floor slat members in one direction, for advancing a load, and for retracting them in an opposite direction. Each cylinder housing has four fluid chambers. First and third chambers are interconnected and the second and fourth chambers are interconnected. This arrangement provides adequate force producing area with a relatively small diameter cylinder housing. Fluid passageways are formed in the piston rods. Transfer valves are incorporated in end portions of some of the linear hydraulic motors.

Abstract: A fluid motor operated by a gas or liquid and having two relatively rotatable parts comprises a plurality of pistons which cooperate with a cam member to produce the rotational output from the motor. The cam member has at least three similar lobes and forms one of the parts and the other part includes at least four cylinders each containing a piston. Each piston/cylinder combination also acts as a slide valve so as to control both the supply of fluid to one of the other pistons and the exhausting of fluid from another of the other pistons.