Abstract: An electronic bore pressure optimization mechanism for dynamically varying the cylinder block piston bore pressure profile in a multiple piston hydraulic unit includes a valve means having a variable orifice disposed in the end cap for metering fluid between leading and trailing pistons in a transition region or between a piston in a transition region and a high or low pressure source; and means for generating a control error signal to the valve means so as to adjust the size of the variable orifice based upon the control signal.

Abstract: A fluid pump, in particular for the coolant and heating system of a motor vehicle, has a stator (21) of claw pole construction and a rotor (6), separated from the stator (21) by a pipe (11), which is immersed in the coolant and forms a vane wheel. The rotor (6) is disposed radially inside the stator (21).

Abstract: An aspect of the invention can be regarded as a method of balancing a rotary actuator for use in a rotatable head stack assembly (HSA) portion in a disk drive. The rotary actuator has a pivot axis, and the rotatable HSA portion has an installed HSA portion center-of-gravity. The method provides for deetermining a desired rotary actuator center-of-gravity location for locating the installed HSA portion center-of-gravity along the pivot axis for mitigating acceleration of the rotary actuator about the pivot axis due to external linear acceleration experienced by the disk drive during a track-follow operation. The method further provides for measuring weight distribution characteristics of the rotary actuator to determine an actual rotary actuator center-of-gravity. The method further provides for selectively modifying weight distribution characteristics of the rotary actuator to locate the actual rotary actuator center-of-gravity at the desired rotary actuator center-of-gravity location.

Abstract: An air compressor system having a cast separator tank for use with an oil-flooded air compressor. The cast separator tank including an integrally cast air-end inlet opening which is mountable in face-to-face engagement with an air-end discharge opening of the compressor; an integrally cast first channel which extends between the air-end inlet opening and a separation chamber; an integrally cast second channel which communicates with a lower portion of the separation chamber and which extends along an outer portion of the cast separator tank; and an integrally cast lip which extends around an inner wall of the separation chamber. The integrally cast air-end inlet opening which is mounted to the discharge opening of the compressor, serves as a mounting foot, and supports the compressor on its discharge end. The compressor system further having a motor, such that the compressor, the motor and the cast separator tank are attached to from a single unit for ease of handling.

Abstract: A high-volume low pressure hand operated air pump comprised of a tube body with a plunger shaft inserted into one end thereof and a check valve at the other end thereof with a floating seal secured to the internal end of the plunger shaft comprised of a captured double sided annular disk having a closed cell foam plastic seal on one side thereof and a plastic stiffener of the same plastic material integrated thereto for supporting the foam sealing side thereof

Abstract: A motor stator of a scroll compressor is formed of a plurality of force fit uncoated plates. As the outer periphery of the uncoated plates is slightly greater than the inner periphery of the housing, the plates are secured to the housing without the need of a coating. After force fitting the plates into the housing, a tool positioned above and below the plates presses the uncoated plates together to eliminate any space between the plates, forming a solid motor stator.

Abstract: A metering device for liquids, especially for viscous liquids, preferably liquids which are to be metered under sterile conditions, with a plurality of metering pumps which can be simultaneously actuated. To achieve an optimized mode of operation, it is provided that the surfaces on the bottom of the pump holding plate and the top of the metering channel plate are made as adjoining sealing surfaces, forming a seal, that, in the pump holding plate, there is a bypass channel with outlet openings in the sealing surface on the bottom of the pump holding plate for each metering pump and that by the relative displacement of the pump holding plate and the metering channel plate with respect to one another, the outlet openings of the bypass channel can be moved into a position in which the bypass channel connects the respective metering channel to the respective supply channel in the metering channel plate.

Abstract: An electric blower includes a motor unit having a stator and a rotor, a fan unit having an impeller attached to an output shaft of the rotor, and a circuit unit having a heat-generating component for controlling electric power to the motor unit. The circuit unit is arranged in an airflow path of air expelled from an outer periphery of the impeller toward the stator and the rotor of the motor unit. The air suctioned by rotation of the impeller cools the heat-generating component in the circuit unit before cooling the stator and the rotor.

Abstract: A hydraulic pump with permanent-magnet motor having a preset direction of rotation, comprising a permanent-magnet motor connected to an impeller with curved vanes which is rotatably accommodated in a volute. The volute is predominantly symmetrical with respect to a line being directed toward an intake port and passing through a rotation axis of the impeller.

Abstract: A terminal crimping apparatus (21) comprises a lower crimper (23) for supporting the lower side of a flat part (6) of an electrically connecting terminal (42); an upper crimper (25) arranged above and opposite to the lower crimper (23) and having molding faces (25a, 25b) for bending to deform the point portions of piercing parts (7, 8) opposite each other by relatively moving toward the lower crimper (23); terminal guides arranged as being movable along and relative to the outer sides of the piercing parts (7, 8) of the electrically connecting terminal (42) disposed on the lower crimper (23) so as to control the piercing parts (7, 8) from falling; and circuit body holders (32, 33) arranged above and opposite to the terminal guides (27, 28) for elastically holding the flat circuit body (1) in cooperation with the terminal guides (27, 28) while the upper crimper (25) moves toward the lower crimper (23).

Abstract: The invention relates to a hydraulic unit for a hydraulic control and/or regulating device, in particular for anti-blocking and/or anti-slipping brake systems, comprising control and regulating electronics arranged in a control housing as well as a valve block connected to said control housing, whereby at least one driving means is provided for at least one pressure-generating element. A cavity associated with the pressure-generating element receives leakage fluid from the pressure-generating element and a discharge channel that is connected to the cavity is provided in the valve block. According to the present invention, a means is associated with the discharge channel, and said means prevents fluid from entering into the discharge channel.

Abstract: The invention relates to a piston pump (10) for a hydraulic slip-controlled vehicle brake system. In order to reduce a structural length of the piston pump (10), the invention proposes embodying the piston (16) of the piston pump (10) as a hollow piston whose inner chamber constitutes a displacement chamber (40) of the piston pump (10) and inserting an inlet valve (20) of the piston pump (10) into the inner chamber of the piston (16).

Abstract: An oil spout is drilled in the crankcase of a scroll compressor between the outer seal and the coupling. The oil spout intersects the oil return chamber to redirect a portion of the oil exiting the oil return passage to the lower surface of the orbiting scroll between the outer seal and the coupling. It is preferred that the oil spout be substantially perpendicular to and smaller in diameter than the oil return passage. The oil spout provides a continual flow of additional lubrication to the outer seal and the coupling, preventing excessive wear of the outer seal and improving overall seal reliability.

Abstract: Disclosed is a radial piston pump having a longitudinally movable pump piston in a cylinder chamber which communicates with a suction valve. A closing body of the suction valve is loaded by a valve closing spring in the direction of its valve seat affixed to the housing. The valve closing spring is supported on the pump piston. The radial piston pump is especially useful in fuel injection systems of internal combustion engines, particularly in common rail injection systems.

Abstract: A method of inserting a terminal stud adapter section of a terminal stud into the radial bore of a rotor, involving a tool, which includes an elongated tool body having a head at one end from which a pair of pins project. The head is preferably plated with copper. The head is received in the recess of a stud adapter section with the pins engaging in apertures in the adapter section. By inserting the adapter section in the radial bore of a rotor, the adapter section can be threaded to the bore copper. Upon removal of the tool from the recess of the adapter section, an outer section of the terminal stud is received within the radial bore and an inner end thereof makes electrical connection with the adapter section.

Abstract: A hermetic compressor including a housing, a compression mechanism disposed in the housing, a motor disposed in the housing and operatively coupled to the compression mechanism, the motor including a stator, the stator having, re lative to the compression mechanism, a proximal end and a distal end, at least one fastener extending through the stator, the stator being fixed, relative to the compression mechanism, by the fastener, a motor cover disposed over the distal end of the fixed stator, a portion of the fastener extending through the cover, and a clip engaging the portion of each the fastener, the cover being retained to the fixed stator by the clip.

Abstract: Disclosed is a piston pump having a pump housing with a cylinder head comprised of a first plate and a second plate. The plates which rest against each other and are screwed to the pump housing, have a first conduit which carries low-pressure fuel and leads to a first check valve disposed between the two plates. The check valve communicates with a cylinder chamber of the radial piston pump. A second conduit carrying high-pressure fuel leads from this cylinder chamber to a second check valve, which is disposed between the first plate and the pump housing. Seals that are appropriate to the load, in fact low-pressure seals, are provided in the region of the cylinder head that is subjected to low pressure and high-pressure seals are provided in the region of the cylinder head that is subjected to high pressure.

Abstract: A piezoelectric vacuum pump that includes a diaphragm comprising an upper diaphragm member and a lower diaphragm member. The diaphragm members preferably comprise thin metal sheets that are plated with a noble metal, such as gold, silver, or platinum, and are mated together so as to form a hermetic seal along the length of the diaphragm. The piezoelectric vacuum pump further includes a plurality of piezoelectric bimorph elements that are mounted to the upper surface of the upper diaphragm member. When the piezoelectric bimorph elements are electrically activated, they cause a localized portion of the upper diaphragm member to flex, thereby creating a change in volume in a portion of the diaphragm proximate to that piezoelectric bimorph element.

Abstract: A compressor system having a first compartment for housing relatively quietly operating equipment, and a second compartment for housing relatively noisy operating equipment. The second compartment is substantially closed off from the surrounding atmosphere to reduce the amount of noise that can be heard outside the compressor system on account of the noisy equipment operating within the compressor system housing. The second compartment includes a small air inlet opening and a small air outlet opening to allow enough air to flow through the second compartment to cool the equipment housed therein. The small openings reduce the amount of air-born noise which is released to the outside environment.

Abstract: An axial piston compressor produces air supplied to an air system of a vehicle, typically a heavy duty truck through a plurality of pistons held within a stationary block, and the movement of the pistons is predicated through the control of a pivotal swash plate. The pistons are idle in a neutral position of the swash plate, wherein a pressure above the pistons in the cylinder block counterbalances a thrust generated by an actuator upon the plate positioned in a plane extending perpendicular to a drive shaft. The plate oscillates in response to a pressure drop above the pistons causing the actuator to expand toward the plate and exert a thrust exceeding the lowered pressure above the pistons and enabling the swash plate to provide the pistons with reciprocal motion.