Abstract: A shrink-fit chuck tool holder for cylindrical, particularly circular cylindrical, shank tools, including a fastening shank for establishing connection to a machine tool and a thermally expandable shrink section. The shrink section has an inside recess for accommodation of a tool shank and a pre-positioning section, which precedes the recess via a step and has an axial extension. The pre-positioning section is disposed eccentrically to the inside recess.

Abstract: A fastener assembly secures loads to a track in a truck bed and is retainable within a track slot of the track. The fastener assembly may include a retainer adapted to fit at least partly within a track slot and a rotatable handle operating on the retainer, the rotatable handle being rotatable between at least an engagement position and a release position. A pressure applicator is positioned between the track and the rotatable handle, the pressure applicator having a bottom surface for applying a pressure on a top surface of the track in response to the position of the rotatable handle. The pressure applicator includes at least one projection projecting from an interior region of the bottom surface and adapted to engage a positioning scallop of the track.

Abstract: A tie down or strap anchor apparatus is disclosed. The apparatus provides a housing that can be mounted flush with a deck, floor or the like. A connector removably attaches to the housing by depressing a piston downwardly. When not in use, the connector is removed and a spring urges the piston.

Abstract: A sheet metal fastener for securing a covering member to a cementitious-like base or insulating material wherein the fastener includes at least two hollow shanks that depend from a common head and wherein each shank includes opposing generally U-shaped spreadable legs for trapping plugs of the material there between and wherein side walls of the legs also flare laterally away from one another to grasp an additional plug of the material between adjacent shanks as the fastener is driven into the base or insulating material.

Abstract: A man-machine! interface is disclosed which provides force, texture, pressure and temperature information to sensing body parts. The interface is comprised of a force-generating device (900) that produces a force which is transmitted to a force-applying device (902) via force-transmitting means (908). The force-applying device applies the generated force to a sensing body part A force sensor (909) associated with the force-applying device measures the actual force applied to the sensing body part, while angle sensors (9171 measure the angles of relevant joint body parts. A computing device (911) uses the joint body part position information to determine a desired force value to be applied to the sensing body part. The computing device combines the joint body part position information with the force sensor information to calculate the force command which is sent to the force-generating device.

Abstract: A handling device for electronic chip components includes an indexing table having a plurality of cavities for holding electronic chip components therein and a circulatory feeder for supplying the electronic chip components to the indexing table. One or more cavities are simultaneously disposed at a location which comes close to the circulatory feeder and, by performing a suction operation in the cavities, the electronic chip components are directly put into the cavities, without moving the electronic chip components along the main surface of the indexing table.

Abstract: A refuse receptacle lifter is disclosed that is mounted on a transporter secured to the front end of a collection vehicle rearwardly of an associated collection container. The transporter is adapted to move the lifter in a generally side-to-side direction relative to the collection container in order to move the lifter between a retracted position and a position in which it is spaced from the collection container so that it can engage a refuse receptacle. If the collection vehicle does not have a collection container. being carried on the front of the vehicle, the lifter may be moved to stored position generally adjacent to the front end of the vehicle.

Abstract: A turbine, e.g., a high pressure (HP) turbine, has a conventional drum-type structure with reaction turbine stages. A preceding or following turbine, e.g. an intermediate pressure (IP) turbine, on a common axis and on the same steam path, has rotor drum which carries an annular row of moving blades having root portions held within a slot in the periphery of the drum. A turbine casing surrounds the drum and carries a static blade assembly with an annular row of static blades which, together with the annular row of moving blades, constitutes a modified turbine stage. The static blade assembly has a radially inner static ring with a radially inner side confronting the periphery of the drum. A seal acts between the inner static ring and the rotor.

Abstract: A composite fan casing for a gas turbine engine includes, in an exemplary embodiment, a core having a plurality of core layers of reinforcing fiber bonded together with a thermosetting polymeric resin. Each core layer includes a plurality of braided reinforcing fiber tows. The braids of reinforcing fiber tows are aligned in a circumferential direction with each fiber tow including a plurality of reinforcing fibers. The core also includes at least one additional fiber tow braided into at least one predetermined axial location to form at least one concentrated stiffening ring.

Abstract: A rotary ram compressor for use in gas turbine engines and the like, having a plurality of vanes attached to discs, with the opposing parts of each two adjacent vanes and the opposing parts of the disks' surfaces confined between the opposing parts of the surfaces of the two adjacent vanes defining a channel in-between. Each channel is formed of two successive freely communicating portions: a first diverging inlet portion; and a second constant cross-sectional area outlet portion. In operation, gases are rammed into the first diverging inlet portion of the channel and are gradually displaced to the second constant cross-sectional area outlet portion of the channel, while being diverged, resulting into a rise in the static pressure energy of the gases, followed by smoothening of the stream of flow of the pressurized gases within the second constant cross-sectional area outlet portion of the channel.

Abstract: A multi-stage radial flow compressor and turbine includes a rotor having a first plurality of blades and a second plurality of blades radially outward from the first plurality. A stator has a plurality of blades radially positioned between the two sets of rotor blades. The stator also includes a plurality of combustors positioned radially outward from the stators. The rotor also has turbine blades radially outward from the combustors which are driven by the combusted gas.

Abstract: Provided are a fixing structure for fixing a rotor to a rotor shaft, in which the contact state of the contact surfaces of the rotor shaft and the rotor is stabilized to thereby maintain the rotation balance of the rotor shaft and the rotor, making it possible to prevent oscillation, and a turbo molecular pump having such a fixing structure. On the outer peripheral portion of the upper surface of a fastening portion (253), there is concentrically formed a rotor shaft (213) side contact surface (257) to be brought into contact with a rotor (103). Further, in the inner periphery of the contact surface (257), there is formed a spot facing portion (259) whose upper surface is recessed from the contact surface (257).

Abstract: A stator for the second phase of a low-pressure turbine has a series of blades each defined by coordinates of a discreet combination of points, in a Cartesian reference system (X, Y, Z), wherein the axis (Z) is a radial axis intersecting the central axis of the turbine. The profile of each blade is identified by means of a series of closed intersection curves between the profile itself and planes (X, Y) lying at distances (Z) from the central axis. Each blade has an average throat angle defined by the cosine arc of the ratio between the average throat length at mid-height of the blade and the circumferential pitch evaluated at the radius of the average throat point; the average throat angle ranges from 57.8° to 60.8°.

Abstract: A rotary structure for radiation fans mainly includes a seat for housing a radiation fan and two brackets coupling with the seat to hold two sleeves. The two sleeves are coupled with two rotary ends of a spindle of the radiation fan to confine the spindle to rotate about a single axis. Thereby the spindle can rotate without skewing while the radiation fan is operating, and impact and noise generation can be prevented.

Abstract: A compressor with a centripetal air takeoff system that includes pipes installed between an outer collar and an inner collar. Each pipe is fitted in a hole in the outer collar and in a hole in the inner collar. The system further includes a locking mechanism between the pipe and the inner collar.

Abstract: A near wall cooling technique for cooling the pressure and suction sides of a turbine airfoil that includes a matrix of cells oriented chord-wise and extending longitudinally having vortex chambers with vortex creating passages feeding coolant from interior of the blade to each of the cells, interconnecting passageways interconnecting each of the vortex chambers and discharge film cooling passageway discharging coolant adjacent the outer surface of the pressure and suction sides. The alternate passageways are staggered and each are tangentially oriented to introduce a swirling motion in the coolant as it enters each of the vortex chambers. The cells may be oriented to be in a staggered or in an in-line array and the number of cells, the number of vortex chambers and the dimension of the cells, vortex chambers and passageways are selected to match the heat load and the temperature requirements of the material of the blade. The direction of flow within each cell is selected by the designer.

Abstract: A wind turbine rotor including a rotor hub (3) and a plurality of blades (4), and where each blade root (16) is connected to said rotor hub through a pitch bearing (5) in such a manner that the pitch angle of the blade is adjustable by a turning of the blade about its longitudinal axis relative to the rotor hub. The blade is provided with at least one electrically conducting lightening down-conductor (6) extending in the longitudinal direction of the blade to the blade root and being electrically isolated from the pitch bearing (5). A spark gap (15) is provided between the lightning down-conductor and the rotor hub, said spark gap (15) being adapted to conduct a lightning current passing through the lightning down-conductor.

Abstract: A device for assembling together annular flanges by means of fastening bolts, in particular in a low-pressure turbine stage of the turbojet, one of the flanges has an element projecting from its face that faces the other flange and that is received in a notch in said other flange when the relative angular positioning of the two flanges is correct.

Abstract: A rotor for the second phase of a low-pressure turbine has a series of blades each defined by coordinates of a discreet combination of points, in a Cartesian reference system (X, Y,Z), wherein the axis (Z) is a radial axis intersecting the central axis of the turbine. The profile of each blade identified by means of a series of closed intersection curves between the profile itself and planes (X, Y) lying at distances (Z) from the central axis. Each blade an average throat angle defined by the cosine arc of the ratio between the average throat length at mid-height of the blade and the circumferential pitch evaluated at the radius of the average throat point; the average throat single ranges from 54.9° to 57.9°.

Abstract: A carrier frame (104), for installation on a circuit board (2), is implemented in the manner of an oil-drilling rig and comprises a platform (117) that is equipped with supporting legs (105, 106, 107, 108) for mounting on the circuit board (2). The carrier frame has, at the center of its platform (117), a depression (121, 123) that is implemented for installation of a fan (3) at a distance from the circuit board (2), the outer wall (123) of the depression (121, 123) forming part of the fan.

Abstract: A liquid well pumping arrangement, especially for oil wells, comprising a pair of adjacent downhole reciprocating pumps each having a barrel, a piston rod connected to a piston slidable within the barrel, and valves adapted to cause liquid to flow from a lower inlet of the barrel to an upper outlet from the barrel when the piston is reciprocated in the barrel. The arrangement includes a well head pumping mechanism for applying reciprocating movement to sucker rods to cause movement of the pistons, the well head pumping mechanism being arranged to reciprocate each of the pistons at the same cyclic rate but with the motions of the two pistons being out of phase by 180°. A single delivery tube is connected to both of the outlets from the barrels such that, with the pumping mechanism operating, a substantially continuous flow of liquid can be produced from said delivery tube.

Abstract: A piston pump (10) for a hydraulic consumer of an electronically controlled vehicle brake system, carries a stepped piston (50, 50?) and centers a sealing assembly (26, 26?) which is retained in an axial direction Ax by a step (52, 52?) on the stepped piston (50, 50?), on the one hand, and is retained by a spring cage (53, 53?), on the other hand. The stepped piston (50, 50?) includes a plane support (54, 54?) for plane support legs (55a,b,c; 55a,b,c?) of the spring cage (53, 53?) The stepped piston (50, 50?) includes radially inwards, with respect to the support (54, 54?), a stepped bore (56, 56?), with the bore (56, 56?) accommodating centering legs (57a,b,c; 57a,b,c?) of the spring cage (53, 53?). Coaxially as well as inside the stepped bore (56, 56?), a spring-loaded valve member (59, 59?) of a non-return valve is arranged.

Abstract: A double-acting, simplex, fluid handling pump is designed to facilitate an optional configuration as either a plunger pump or a diaphragm pump. An injection molded plastic pump body comprises two bilaterally symmetrical halves that include internal pockets and grooves for clamping and retaining first and second generally identical valve assemblies at opposing end portions of the pump body. When configured as a plunger pump, first and second plunger are arranged to move 180° out-of-phase with respect to one another within stationary guide sleeves that are clamped within the pump body where one plunger effecting a suction stroke while the other effects a compression stroke. When configured as a diaphragm pump, the plungers are removed from the connecting rods and replaced by diaphragms and a change is made in the valve casing employed but a majority of the remaining parts of the pump assembly remain unchanged from what is used in the plunger pump.

Abstract: A reed valve having a plurality of tips and associated recesses is provided as a compressor suction valve with each valve tip coacting with a suction port. The recesses are located in the housing structure defining the cylinder of the compressor and are spaced a distance on the order of 0.1 inches from the tips when the suction valve is closed. The valve is secured on one side of the cylinder and each tip is located along a line from the center of the cylinder through the center, or axis, of a suction port.

Abstract: The invention concerns a piston compressor, particularly a hermetic refrigerant compressor, with a compression chamber, which is limited by a valve plate arrangement having a valve plate with a suction gas opening and a pressure gas opening, a suction valve plate with a suction valve element, and a pressure valve plate with a pressure valve element. It is endeavoured to achieve a good efficiency combined with a simple assembly. For this purpose, it is ensured that the pressure valve plate and the suction valve plate are located on the side of the valve plate facing the compression chamber.

Abstract: A compressor comprises a plurality of pairs of a cylinder bore and a piston moving reciprocally in the cylinder bore, a valve plate provided with a plurality of outlet holes for leading pressurized gas in the cylinder bores to the outside, a plurality of strap-shaped outlet valves, each whereof is free at one longitudinal end opposing a corresponding one of the outlet holes to open and close it, and a plurality of retainers, each whereof extends in the same direction as a corresponding one of the outlet valves and is provided with a divergence restricting surface opposing the valve plate with the corresponding outlet valve extending between the surface and the valve plate to restrict the divergence of the corresponding outlet valve. The divergences of the outlet valves restricted by the retainers are different from each other.

Abstract: A balancing system for different compressors utilizes a counterweight having a common exterior configuration. The mass of the counterweight is optimized for each compressor by changing the size of a recess located in the counterweight. In one embodiment, the recess is an arcuately shaped recess; and in another embodiment, the recess is a plurality of holes.

Abstract: A hermetic compressor uses an oil pump that includes a trochoid gear. Therefore, regardless of the rotation speed of a driving motor of the compressor, a sufficient amount of oil can always be pumped. The oil pump unit may include a plurality of suction holes with openings at different heights. If the refrigerant and oil separate, at least one of the openings will admit oil into the oil pump unit, to ensure lubricating oil is supplied to the moving parts of the compressor.

Abstract: A rotary piston machine has a driving part which is driven by an electric motor and a driven part which are geared together and engage one another for the delivery of a medium, the driven part being put under load in the direction of the driving part and the driven part being disposed on a bearing bushing at an appropriate angle to the driven part.

Abstract: A rotor structure of pneumatic grinder, including a rotor main body and at least one reinforcing plate. The rotor main body is formed with a central shaft hole for a rotary shaft to pass through. Several radial projecting sections are formed on outer circumference of the rotor main body at equal intervals. Each projecting section has a depression for reducing the weight of the rotor structure. A split is defined between each two adjacent projecting sections. A vane is inserted in each split. The reinforcing plate is coaxially embedded in the rotor main body. The reinforcing plate outward radially expands from the axis of the rotor main body for increasing the strength of the rotor main body.

Abstract: A tool rig for the compaction of particulate materials includes a base and a cylinder block disposed on the base. At least two pistons are disposed within the cylinder block and one piston is at least partially disposed within one other piston. A supply component is disposed in the inner diameter of at least one of the pistons and defines at least one channel. The channel connects an energy supply to at least one of the pistons.

Abstract: A co injection manifold assembly for injecting two different materials into a common mold cavity includes a housing that defines a first passage, a second passage and an outlet. The first and second passages communicate with a bore having a valve member for controlling flow of the material through the outlet. A first temperature control element in thermal contact with the first passage and a second temperature control element are in thermal contact with the second passage. Each of the first and second temperature control elements are separately controllable to provide separate temperatures for each of the first and second passages. Separate temperatures in each of the first and second passages provide for the use of materials having dissimilar molten temperatures.

Abstract: Disclosed is a drive unit operable to translate and rotate a shaft, the drive unit including: (i) a hollow electric motor having a rotor, (ii) a fluid cylinder, (iii) means for connecting the shaft to the rotor of the hollow electric motor, (iv) means permitting the shaft to move lengthwise coupled with the fluid cylinder, and (iv) means connecting the fluid cylinder to the shaft, whereby the shaft may be rotated by the hollow electric motor and moved lengthwise by the fluid cylinder, and wherein the fluid cylinder has an outer wall coupled with the rotor of the hollow electric motor.

Abstract: The present invention provides an apparatus and method for fabricating structural building panels. The apparatus may be used for fabricating panels directly on the foundation for a building. The apparatus may include a support frame, a flattening frame, a press frame, drive members such as pneumatic cylinders supported by the press frame, and posts attached to the support frame and used for aligning and coupling the apparatus and panel components. In order to fabricate a structural panel using the inventive apparatus, drywall sheets having bores sized for receiving the posts therethrough are prepared and drywall ribs or spacers are cut from drywall sheets. The support frame may be located on the foundation where the structural panel is to be positioned and a first sheet and a second sheet placed onto the posts, the sheets having adhesive and drywall spacers positioned perpendicularly therebetween.

Abstract: An extrusion blow molded container is provided comprising a closed base, a body portion extending from the closed base having a surface finish that is substantially free of striations, and an open neck portion extending from the body portion. In an embodiment, the container is comprised of polyethylene terephthalate (PET); the base portion includes a support portion and a substantially elevated portion having a center and a major diameter; and the center is disposed an elevated distance above said surface that is less than about 0.05 the major diameter. A method and apparatus for extrusion blow molding an article is also disclosed.

Abstract: A resin molding apparatus includes a fixing member to which a top mold is attached, a movable member to which a bottom mold is attached, a push-up member provided below the movable member, a drive mechanism moving the push-up member in upward/downward direction, and a flexible joint provided between the movable member and the push-up member. The push-up force of the drive mechanism is transmitted from the push-up member via the flexible joint to the movable member. Thus, a crack does not occur at a connection portion between the push-up member and the movable member. Therefore, a gap is not created between the top mold and the bottom mold. As a result, an excellent molded product is formed.

Abstract: A burner includes separate fuel and oxidant conduits. The fuel conduit has inlet, transitional, and outlet sections, and the oxidant conduit has inlet and outlet sections. The cross sectional flow area of the fuel transitional section varies from an initial cross sectional flow area at the fuel intake to a different cross sectional flow area at the fuel outtake, and the cross sectional flow area of the fuel outlet section is substantially uniform. At least some of the oxidant inlet section is spaced around substantially all of at least a portion of at least one of the fuel inlet, transitional, and outlet sections. The cross sectional flow area of the oxidant outlet section is less than or equal to the cross sectional flow area of the oxidant inlet section and is substantially uniform, and at least some of it is spaced around substantially all of at least a portion of the fuel outlet section.

Abstract: A combination of a flame arrestor with a reflection suppressor is provided which not only arrests an advancing flame front, but also suppresses or mitigates a reflection wave that is generated by a pressure wave that passes through the combination and continues on to a pipe restriction what generates a reflection wave that proceeds back to the combination. At the combination, the reflection suppressor suppresses and/or mitigates the reflection wave, thereby avoiding a heightened pressure in the combination that could cause a re-ignition and a new flame front and pressure front. The reflection suppressor has a tapered profile that permits a pressure wave to pass along and past the reflection suppressor as it leaves the combination but that impedes and mitigates a returning reflection wave produced by the pressure wave striking a pipe restriction and causing such a returning reflection wave.

Abstract: A computer system configured to provide multi-day training to users. The computer system includes a program storage device. The program storage device includes a database that stores a number-of training-days value and sequence data. The program storage device also includes computer readable instructions, that when executed by the computer system. utilize the number-of-training-days value and the sequence data to control the sequence of training events.

Abstract: An electronic system comprises a system board, one or more cards adapted to couple to the system board, wherein the system board transfers signals to and from the one or more cards, at least one electrically conductive plate, and one or more connectors coupled to the at least one electrically conductive plate to or from the one or more cards. A plurality of power supplies and voltages may be used. A measurement point on the at least one electrically conductive plate may be used to exert additional control over the plurality of power supplies.

Abstract: A PCB assembly includes a motherboard, a daughter board, and an elastic strip. The motherboard is electrically connected to the daughter board via connectors. Each of the motherboard and the daughter board includes an area connected to a power layer or a ground layer. One end of the elastic strip electrically connects to the area of the motherboard. The other end of the elastic strip electrically connects to the area of the daughter board whereby increases electrically connection between the motherboard and the daughter board.

Abstract: A reduced insertion force mezzanine connector is used to couple first and second circuit boards. In one embodiment a connector frame has a first end disposed against the first circuit board and defining a first wall, and an opposing second end disposed against the second circuit board and defining a second wall generally parallel with the first wall. A plurality of wafers are disposed. Each wafer has a first edge in sliding contact with the first wall and an opposing second edge in sliding contact with the second wall. A plurality of electrically conducting pathways extend along each wafer from the first edge to the second edge. A wafer guide structure defines a plurality of wafer-support aisles on the first and second walls for receiving the edges of the wafers to constrain the wafers with a fixed spacing and generally parallel alignment.

Abstract: An electrical connector includes a connector body (2) having a top wall (220), a bottom wall (222). A terminal (1) has a base section (15) within the body to be moveable longitudinally relative to the body. A pair of spaced retention elements (18) is disposed longitudinally from the base section, and each adjacent the top wall or bottom wall. The retention elements are moveable together with the base section such that when the contact is moved downwards to be at a first position, one of the retention elements is urged to engage on the top wall, and when the contact is moved upwards to be at a second position, the other retention element is urged to engage on the bottom wall, thereby preventing the terminal from being removed during the longitudinal movement of the terminal relative to the body.

Abstract: A connector includes a plug including a plug body made of an insulating material and a plug contact; a receptacle including a receptacle body made of an insulating material and a receptacle contact, wherein the receptacle contact contacts the plug contact to be electrically connected with the plug contact when the plug is inserted into the receptacle; a plug-contact contacting portion formed on the receptacle contact for contacting the plug contact when the plug is inserted into the receptacle; an inner-wall-contacting portion extending from an end of the plug-contact contacting portion toward an inner wall of the receptacle body; and a contacting portion formed on the plug contact extending in a plug insertion/extraction direction. The first contacting portion slides on the plug-contact contacting portion and the inner-wall-contacting portion contacts the inner wall of the receptacle body when the plug is inserted in/extracted from the receptacle.

Abstract: An electronic device having one or more integral connectors is disclosed. The connector includes an electromagnetically-shielded cavity defined by an outer shell integrally formed in the housing and having a cross-sectional profile of a plug to which the connector may mate. The connector also includes a tongue integrally formed in and extending from a component (such as a printed circuit board) of the electronic device and protruding into the cavity. The tongue may have one or more electrical contacts on one or both sides. The connector may also include one or more snap features for retaining a mated plug at a predetermined force. The connectors may conform to one or more connector standards, such as the Universal Serial Bus (USB) standard and/or the IEEE 1394 (FireWire®) standard. Devices incorporating such integral connectors may be smaller and manufactured less expensively than devices having conventional, non-integral, connectors.

Abstract: In a case, a branch circuit unit, a multifunction relay unit and a relay unit are stored, being subsequently arranged in parallel. The branch circuit unit is composed of a laminated body of a bus bar and an insulating board, and a first printed board provided with a conductor on the both front and rear planes. The multifunction relay unit is provided with a second printed board whereupon an electric component is mounted, and a relay connector which connects the conductors of the first to the third printed boards. An external connecting terminal is protruded from the conductor of the second printed board and is protruded into a connector fitting part provided on the case. The relay unit is mounted with a plurality of relays on the third printed board.

Abstract: A connector mounting structure includes a circuit board and a male connector. The male connector is surface-mounted to the circuit board and has a housing and terminals. The housing includes a body member and a fixing member fixed to the body member. The fixing member has a tube portion and a protection portion. The tube portion receives a housing of an external female connector. Each terminal has first and second ends. The first end is exposed to a surface of the body member and soldered to the circuit board. The second end is also exposed to the surface of the body member to be electrically connectable to the female connector. The protection portion is placed between the first and second ends in a thickness direction of the circuit board to cover facing area between adjacent first ends.

Abstract: A high-speed electrical connector is disclosed. The high-speed electrical connector connects a first electrical device having a first ground reference to a second electrical device having a second ground reference. The connector, which includes a connector housing and a signal contact, is devoid of any ground connection that is adapted to electrically connect the first ground reference and the second ground reference.

Abstract: In a security apparatus for securing an electrical connector, a plug may be fitted for insertion into a connector receptacle compliant with a connector standard. The plug has at least one aperture adapted to engage at least one latch in the connector receptacle. An engagement member is adapted to partially extend through at least one aperture and lock to at least one structure within the connector receptacle.

Abstract: An electrical connector assembly includes an electrical connector and a pick up cap. The connector includes an insulative housing, a plurality of contacts received in the housing, a stiffener being able to support and secure the housing, and a metal clip. The housing defines a conduction region for supporting a central processing unit (CPU). The clip is disposed on the housing to press the CPU upon the contacts. The pick up cap provides a smooth flat portion facilitating to be sucked by a vacuum suction device, thereby manipulating the electrical connector assembly on a desire location of a substrate circuit such as a printed circuit board (PCB). The pick up cap attaches to the stiffener, and the pick up cap covers at least a portion of the clip. Thus, user must take away the pick up cap before mounted the CPU to the connector.