Abstract: An axle driving apparatus including a housing which houses an input shaft having a longitudinal axis of rotation, axles having a lateral axis of rotation and a power-take-off shaft having a longitudinal axis of rotation. The housing may include a first housing member, a second housing member and a third housing member longitudinally joined with one another. A partition is disposed at a vertical center of the first and second housing members and divides the interior thereof into a first and a second chamber. A third chamber is formed between the second and third housing members. An hydrostatic transmission is disposed in the first chamber. A transmitting mechanism drivingly connecting the hydrostatic transmission with the axles is disposed in the second chamber. Another transmitting mechanism drivingly connecting the input shaft with the power-take-off shaft is disposed in the third chamber.

Abstract: A force transmission and amplification device for a brake system comprising a pedal (1) and an output rod (2) for transmitting by way of the output rod (2) an output force (F2) having a higher intensity than an input force (F1) applied to pedal (1). An input rod (3) is secured to the pedal (1) for supplying a primary piston (4) located in a first diameter (D1) of primary cylinder (5) to delimit a primary chamber (51) retaining a fluid. A second piston (6) secured to the output rod (2) is located in a second diameter (D2) of a second cylinder (7) to delimit a secondary chamber (71). The primary chamber (51) is connected to the secondary chamber (71) to immediately supply pressurized fluid which acts on the second piston (6) to develop the output force (F2).

Abstract: Oil passages 12 for lubricating and cooling a piston pin 10 are provided in such a manner as to each open to an oil ring groove 5 of a piston 1 and to a piston inner side surface 2b of a piston pin supporting part 2 at portions in the vicinity of an upper end of a piston-pin hole 2a through the piston pin supporting part 2. The oil passages 12 are provided diagonally relative to an axis of the piston-pin hole 2a.

Abstract: A blower module which is sufficiently quiet to be placed in occupied buildings and not require the construction of a separate blower building; each blower module is a cylinder having conic drip cap on its top, a positive displacement blower, typically, a rotary piston or Roots type blower, and electric or otherwise powered motor to drive the blower, a labyrinth passage outlet silencer, and a labyrinth passage inlet silencer; and the blower module being shaped for sanitation, mechanical containment, noise abatement and stacking one blower on top of another.

Abstract: A system for quasi-statically correcting tracking of rotor blades of a helicopter rotor during operation includes a trim tab mounted on each rotor blade and deflectable relative to the rotor blade so as to change a tracking path of the rotor blade, and a rotor track and balance analyzer that includes sensors for acquiring rotor tracking and balance information and is operable to process the rotor tracking and balance information so as to predetermine a new tab position to which the trim tab should be deflected for bringing the tracking path of a mistracking rotor blade into alignment with a reference path. The trim tab is deflected by an actuator mounted to the rotor blade, the actuator having an actuating element coupled with the trim tab and formed of a smart material such that the actuating element deforms proportional to a stimulus applied to the actuating element.

Abstract: The present invention provides a booster in which magnitude of output can be adjusted also by an operation of a solenoid mechanism. An armature (13) is shifted to the right (in FIG. 1) in opposition to a returning spring by applying electricity to a solenoid (39), with the result that a space (80) on one end of the armature is communicated with a constant pressure chamber (5) through a passage (T3). When an electromagnetic force acting on the armature (13) exceeds a predetermined value, a distal end of a valve member (28) is shifted to the right (in FIG. 1) via a cylindrical member (31) to open an atmospheric valve (34), thereby introducing the atmosphere into a variable pressure chamber (6). The pressure in the variable pressure chamber is applied to the other end of the armature and the difference in the pressure tends to move the armature toward its home position.

Abstract: Apparatus for equalizing pressure between two conduits including means for sensing pressure in said conduits; valve means communicating between said conduits, said valve means adapted to open so as to equalize pressure between said conduits.

Abstract: In a piston rod-less pneumatic cylinder, the longitudinal slot (1) is sealed from the inside on either side of the piston with a sealing tape (3) which exhibits fixing elements (9) that engage a fixing edge (10) provided on the cylinder with a positive fit to secure the sealing tape (3) given an unpressurized interior. This ensures a reliable sealing of the interior even in an unpressurized state, and prevents leaks from starting when a previously unpressurized interior is pressurized.

Abstract: A coolable casing of a gas turbine or the like, with a plurality of arcuate casing segments (10) which are arranged so as to be contiguous with one another in a circumferential direction, to form an essentially closed casing ring surrounding a rotor (110), in particular of a high-pressure turbine, at least one annular casing cooling chamber (15) which is formed in the radial direction between the casing segments (10) and arcuate guide segments (30) provided with a multiplicity of passage orifices (34), at least one air guide chamber (25) which is formed in the radial direction between the guide segments (30) and at least one carrier segment (20), and at least one air supply duct (26) which is made on the carrier segment (20) and opens into the air guide chamber (25), the guide segments (30) being mounted loosely with radial play. This ensures stress-free reception, even in the case of intensive operations having high temperature gradients.

Abstract: Vane pieces (31) which are in an outer peripheral edge portion of an impeller (30) are divided into front and rear groups by a partition wall (32), and arranged in a staggered pattern, and outer peripheral faces of the vane pieces (31) are protruded toward the outer peripheral side with respect to the outer peripheral face of the partition wall (32). Therefore, fuel portions respectively entering vane grooves (33) which are divided into front and rear groups do not simultaneously collide against end faces (9b) of radial seal portions (9a). Consequently, the level of noises due to the fuel collision can be lowered. Furthermore, a reverse-flow region is prevented from being produced immediately above the partition wall (32). Therefore, the pump efficiency can be improved.

Abstract: A generator of aerodynamic force by rotational movement, by means of a device which, starting from a rotational movement, induces a field of velocities in the surrounding fluid, which produces a difference in pressure on a surface, which in turn results in an aerodynamic force. The rotor element (1) is set in rotation at high speed by a motor (3). The rotational movement of the rotor element causes the fluid in which the device is immersed to assume a rotational movement, the velocity of the fluid layer that is in contact with the cylinder being equal to the velocity of a point at the surface of the cylinder. The planar element (2) separates the fluid into two regions. The fluid in the region below the surface is motionless, whereas the fluid above the surface is in motion. Since the higher the velocity of the fluid the lower its pressure, the fluid in the region below the surface exerts a higher pressure than that exerted by the fluid in the region below the surface.

Abstract: An improved two-piece assembly having a piston skirt and piston crown made from two different materials. The piston assembly attaching to a piston rod without the use of an external bore in the piston skirt.

Abstract: An object of the present invention is to reduce the work cost of a piston, and to decrease the resistance of flow in a communicating passage between a pressure chamber and a reservoir, and to reduce the ineffective stroke, too, and the means is as flows: a small outside diameter portion (28) whose outside diameter is reduced by forming a step surface (27) on the periphery of a piston (24) and a sleeve (30) to be fitted onto the periphery of the small outside diameter portion (28) are provided; and a radial passage groove (32) formed along the radial direction between the step surface (27) and the end surface of the sleeve (30) opposite to the step surface (27) and an axial passage groove (33) formed along a direction crossing the radial passage groove (32) between the inner surface of the sleeve (30) and the peripheral surface of the small outside diameter portion (28) are provided; and the radial passage groove (32) and the axial passage groove (33) are used as a communicating hole.

Abstract: A bumper for braking an impact piston is disposed at a lower part of an impact clinder for sidably housing the impact piston. The impact piston has a driver for driving a fastener and having a cylindrical shape at its upper portion. The bumper includes an upper part having a transverse section of an annulus ring the inner surface of which has a size to form a void been the inner surface and an outer surface of the upper portion of the driver, and a top surface for receiving the impact piston. The top surface has all outer diameter of the same size as that of the impact piston.

Abstract: A wobble drive in an axial piston machine, particularly the axial piston pump of a high-pressure cleaning device, having a wobble body (1) rotatable around an axis of rotation (D) and a wobble plate (2) driving with its front side at least one piston (10a) positioned parallel to the axis of rotation D, a roller bearing (3) positioned between the wobble body (1) and the wobble plate (2) exhibiting a bearing axis inclined to the axis of rotation (D). In order to insure even at elevated rotary speeds of the wobble body (1) and thus also of the rolling bodies (6) that the rolling bodies (6) are securely held in their races (4,5) in spite of the elevated centrifugal forces acting on them, it is proposed that the wobble plate (2) be provided with a rim (7) overlapping the wobble body (1), with the rolling bodies (6) being positioned between the rim (7) and the wobble body (1).

Abstract: A piston for use in the cylinder block of a hydraulic power unit. The piston has an elongated cylindrical body and one end terminating in a spherical surface. The piston is composed of a body and insert which are made from different materials, preferably metallic materials, and joined together. The piston body takes the form of a solid cylinder or a hollow cylindrical tube. The spherical surface takes the form of an internal spherical socket or an external spherical ball. The insert takes an elongated or abbreviated form providing for both open cavity and closed cavity piston configurations. The piston includes a conduit which traverses the body and insert, providing a path for pressurized fluid. The body and the insert are preferably formed by a metal injecting molding process utilizing a molding material comprised at the time of molding of a mixture of metallic grains and a binder.

Abstract: A gas turbine stationary blade having passages (23, 24) that are provided in the stationary blade (10). A front cylindrical insert (2) is provided in the passage (23) and a rear cylindrical insert (5) is provided in the passage (24), and the inserts are supported at two supporting portions (3a, 3b), (6a, 6b), respectively. A projection (1) is provided at a leading edge portion of the blade so that the leading edge, where the thermal loads are high, is made smaller in size and the number of rows of cooling holes (11a) in the leading edge portion is reduced. Air blowing holes (4b) are provided on the dorsal side rear portion of the front insert (2) and film cooling holes (12) are provided on the dorsal side of the blade, both have diameters that are larger than other air blowing and cooling holes provided in the insert (2) and the blade (10), so that dust in the cooling air is caused to flow out, thereby preventing clogging of the holes.

Abstract: The object of the invention is to provide an axial-flow turbine having an improved efficiency. In addition, the assembly and dismantling possibilities are to be extended. According to the invention, this is achieved in that the parting seam (17) between the outer ring (12) of the nozzle ring (15) and the cover (8) is arranged on the moving-blade side of an imaginary plane (20) passing through the center of the gap width (19) of the axial gap (18).

Abstract: The present invention relates to a filled piston assembly for a hydraulic pump or motor. The filled hydraulic piston assembly includes a blank piston body having first and second ends and a cavity or compartment in the piston body extending inwardly from one of the ends. The piston is filled with a lightweight solid insert element which is placed into the compartment of the piston. The material of the blank piston body is then cold formed around the insert element to encapsulate the element. The piston body is then further cold rolled to receive a spherical ball in one end. It is then cut to length, machine finished, and a longitudinal center bore is drilled therein.

Abstract: In a vacuum type brake booster apparatus, the response in an initial stage of operating brakes is made sluggish so as to improve the brake feeling in a normal operation area, while the response is improved at the time of panic braking when the brake pedal is largely depressed to thereby reduce a stopping distance at the time of braking. A throttling mechanism is constituted by a position variable piston fixed to an operating rod of a brake booster of a vacuum type and a circumferential wall portion surrounding the position variable piston with a certain gap being formed therebetween.