42results about How to "Maintain concentricity" patented technology

The present invention relates to a steerable catheter assembly, comprising an elongate outer shaft having a lumen therethrough and having a proximal end and a distal end; an elongate inner shaft coaxially disposed within the lumen of the outer shaft and having a proximal end and a distal end; and characterised in that at least one of the inner shaft and the outer shaft is formed with a curvature at a distal portion, such that in an aligned configuration, a distal end of the catheter assembly is disposed at a maximum deflection angle α to a longitudinal axis of the catheter assembly; and the inner shaft and the outer shaft are rotatable relative to one another out of the aligned configuration such that each shaft exerts a deflection force on the other shaft to deflect the distal end of the catheter assembly between α and 0 degrees to the longitudinal axis of the catheter assembly.

A reciprocating compressor includes a driving unit (16) having an outer stator (26) and an inner stator disposed at a predetermined air gap there between, and a moving member positioned between the outer stator (26) and the inner stator (28) and linearly and reciprocally moved; a compression unit (18) having a cylinder (38) fixed at an inner circumferential surface of the inner stator (28) and a piston (22) linearly moved in the cylinder (38) by being connected to the moving member, a support portion (20) supporting the compression unit (18) and the driving unit (16); and a resonant spring unit positioned (24) at a rear portion of the driving unit (16), disposed at the support portion (20), and inducing a resonant movement of the piston (22). Therefore, a resonant spring (62,64) of the compressor can be moved horizontally and straight forwardly by reducing a torsion moment of the resonant spring (62,64), a width of the compressor can be reduced, and a concentricity of a driving unit (16) and a compression unit can be maintained.

An embossing system is provided for embossing a web having a first embossing roll having embossing elements and a second embossing roll having embossing elements, wherein at least a portion of the embossing elements of the first and second embossing rolls are substantially oriented in the cross-machine direction. The embossing roll may be crowned, may have alignment means, and may be provided with precision gearing.

A structure and associated method for forming a liquid metal or spiral groove bearing assembly for an x-ray tube is illustrated that utilizes a unitary sleeve and a thrust ring or seal each formed of a weldable, non-refractory material. The sleeve and the thrust seal are welded to one another to provide an improved construction for minimizing leaks of the liquid metal bearing fluid. The structure of the sleeve and the thrust seal are formed with deformation restricting features that maintain the integrity of the bearing surfaces of the assembly when the thrust seal is secured within the sleeve and welded thereto to form the bearing assembly.

A device for driving a rear wheel of an electric vehicle is provided. In one embodiment, the rear wheel driving device includes a motor for supplying rotational power, a gear group connected to a rotor of the motor, a final gear connected to the gear group, an output shaft connected to the final gear and rotating, a hub installed on an outer circumferential surface of the output shaft using a nut, a wheel connected to the hub, an axle housing connected to the hub using a hub bearing, a motor cover protecting the motor and mounting an output shaft bearing, and a trailing arm connected to the axle housing using an axle housing bolt and configured to mount the motor from an exterior side to an interior side of a vehicle.

In a reciprocating compressor including a first frame for supporting a cylinder of a compressing unit, a second frame for supporting a side of an outer stator of a motor unit and a third frame for supporting the other side of the outer stator and an inner stator of the motor unit, wherein the motor unit is arranged between the second and third frames, they are combined with each other, and the assembly is combined with the first frame. Accordingly, a reciprocating compressor is capable of reducing a fabrication cost by eliminating precise processing of construction parts and simplifying an assembly process by constructing a reciprocating motor as one assembly and combining it with a compressing unit.

An embossing system is provided for embossing a web having a first embossing roll having embossing elements and a second embossing roll having embossing elements, wherein at least a portion of the embossing elements of the first and second embossing rolls are substantially oriented in the cross-machine direction. The embossing roll may be crowned, may have alignment means, and may be provided with precision gearing.

An interface assembly for a frozen dessert machine is disclosed that includes a freezer door having opposed front and rear sides and including at least one recessed mounting pocket formed in the rear side thereof, the at least one recessed mounting pocket including a cornice covering an upper portion thereof, and at least one elongated baffle having opposed proximal and distal end portions, the proximal end portion of the at least one baffle including a retention flange that is dimensioned and configured for detachable reception within the at least one mounting pocket of the freezer door behind the cornice.

A patient support structure for use in a magnetic resonance image (MRI) scanner includes a base and a first and a second arm pivotally connected to the base. The patient support structure supports an anatomical region being imaged and positions an antenna array around the anatomical region. Access to the patient is improved by: providing a flexible coil that wraps around the anatomical region being imaged, providing a support structure open to the anterior region of the anatomical region being imaged, and providing a support structure that may be opened and closed about the anatomical region being imaged.

Disclosed is a divided core of an EPS motor stator that is easy in assembly and disassembly of divided cores and that can accurately maintain concentricity of the divided cores when the divided cores are assembled, wherein the divided core including a yoke forming a periphery of the stator core and a tooth protruded from the yoke to an inner circumferential direction, further includes an upper lug circumferentially protruded on an upper side of a distal end of the yoke, and a lower lug circumferentially protruded on a lower side of the other distal end of the yoke.

A stator for a torque converter comprising: (i) an axis of rotation; (ii) a body portion including: a first body circumference; a back wall; at least one centering protrusion extending to a first measured axial distance relative to the back wall; and a second body circumference; (iii) a blade portion including: an outer circumference; and a plurality of blades, arranged for directing fluid flow, extending in a radial direction from the second body circumference to the outer circumference; and (iv) a housing portion, disposed radially inward relative to the body portion, including: a radial wall, disposed at a second measured axial distance relative to the back wall, having a thrust surface; and, wherein the housing portion is arranged for housing a one-way clutch; and, wherein the first axial distance is greater than the second axial distance.

A washing machine and a method for manufacturing the same are disclosed. The washing machine includes a tub, a bearing housing having a fastening member and formed by insert-injection molding into the tub so as to expose the fastening member from the tub, and a stator mounted to the fastening member. The washing machine can maintain concentricity of the stator and permit simplification of an assembly process to reduce manufacturing costs.

The invention relates to a clamping device used for machining shaft products. The clamping device used for machining the shaft products comprises a base; supports capable of moving in the longitudinal direction relative to the base are arranged at the two ends of the base; the base is further provided with supporting mechanisms close to the two supports correspondingly; the supporting mechanism and the support which are located on the same side of the center of the base form a support set; each supporting mechanism comprises two rotary arms rotationally connected with the base; a tension spring is connected between the two rotary arms of each supporting mechanism; and the clamping device further comprises detection elements for enabling the two shaft products arranged on the two support sets to be coaxial. When the clamping device used for machining the shaft products supports the shaft products, it is ensured that the shaft products can be on the horizontal line, the two shaft products on the horizontal line are kept on the same axis line through the detection elements, coaxiality of the two shaft products is kept during welding or joining, and the machining quality is ensured; and in addition, through the height-adjustable supports and the swinging rotary arms, the clamping device can be suitable for different specifications of shaft products and is high in utilization rate.

A tool holding module comprises a fixture seat and a tool rod. The fixture seat has a first outer surface on an external wall, a first top surface on one end, and a fixture head is located on the same end. The fixture head has a second outer surface on an external wall and a second top surface on one end. The internal wall of the tool rod has first and second inner surfaces respectively corresponding to the first and second outer surfaces, and has first and second butting surfaces respectively corresponding to the first and second top surfaces. The tool rod and fixture seat are connected to enfold the fixture head. The security of the tool holding module is enhanced via close contact of the first outer and inner surfaces, the second outer and inner surfaces, the first top and butting surfaces, the second top and butting surfaces.

The present disclosure relates to a cooking appliance including a valve holder assembly for preventing movement of a valve. The cooking appliance includes a main body including a heating part, a valve positioned at least partially inside the main body to supply fuel to the heating part, and a knob unit coupled to the main body to regulate the degree of opening and closing of the valve, wherein the knob unit includes an operating part provided on a front surface of the main body to be operable and to which the valve is coupled at least partially, and a valve holder assembly positioned at the rear of the operating part, and the valve holder assembly includes a valve holder configured to allow a portion of the valve to pass therethrough, a valve holder casing configured to receive the valve holder, and an elastic member provided on the valve holder casing and configured to contact the valve holder to prevent movement of the valve.

An arrow insert with threaded stem for retaining an arrow tip preferably includes an arrow tip and an arrow insert. The arrow tip may be a broadhead. The arrow tip includes tip portion formed on one end and a threaded tap formed in an opposite end thereof. An O-ring counter bore is formed in the opposite end. The arrow insert preferably includes a barbed shank, an arrow shaft contact portion, an end flange, an arrow tip locator, at least one O-ring groove and a threaded stem. The barbed shank extends from one end of the arrow shaft contact portion. The end flange extends from an opposing end of the arrow shaft contact portion. The arrow tip locator extends from the end flange. The threaded stem extends from the arrow tip locator. The at least one O-ring groove is formed in the arrow tip locator.

A hair care appliance comprising a body having an outer wall, a chassis extending within the outer wall, wherein the chassis comprises a locking feature and the body comprises an engaging feature adapted to retain the chassis in position within the outer wall when the locking feature is rotated with respect to the engaging feature. The outer wall may comprise an inner surface and the engaging feature extends radially inwards from the inner surface. The engaging feature may comprise a rib that extends from an inner surface of the outer wall. The engaging feature may extend at least partially around the inner surface of the outer wall. The engaging feature may comprise a pair of engaging features which may be radially spaced apart. The locking feature may comprise a locking rib which may extend radially from the chassis towards the outer wall.

A liquid metal or spiral groove bearing structure for an x-ray tube and associated process for manufacturing the bearing structure is provided that includes a bearing shaft rotatably disposed in a bearing housing or shell. The shell includes a thrust seal engaged with a sleeve to maintain co-axiality for the rotating liquid metal seal formed in the shell about the shaft. The shaft has a bore for the introduction of a cooling fluid into the bearing assembly in which is disposed a cooling tube. The cooling tube includes turbulence-inducing features to increase the turbulence of the cooling fluid flowing through the cooling tube, consequently enhancing the heat exchange between the cooling fluid and the shaft. This maximizes the heat transfer from the shaft to the oil, allowing materials with lower thermal conductivities, such as non-refractory materials, to be used to form the bearing shaft and shell.

The apparatus comprises holder (20) with a seating face on which a container such as a cupshaped article (1) stands. Air is supplied through channels and air pressure is balanced so as to hold the article (1) against the face. The profile of the apparatus guides a base feature, or “stand” of the article (1) into the holder (20) and onto the seating face (23), and contacts the article (1) radially outside the seating face (23). The apparatus also has a concentric outer sleeve (25) to provide the additional radial contact and resist lateral movement of the article (1) while maintaining concentricity.

The invention discloses a die. The die comprises a female die, a cushion block, a guide sleeve and a male die, wherein the female die is provided with a basically horizontal base part and a cylindrical body; a containing hole is also formed in the cylindrical body; the cushion block is provided with an opening groove penetrating through the cushion block longitudinally, so that the cushion block can be laterally inserted into and matched with the cylindrical body of the female die and supported on the base part of the female die; the guide sleeve is matched on the cylindrical body of the female die in a sliding manner; the male die is provided with a cylindrical guide part and a punching part; the guide part is provided with a shape which can be glidingly matched with the interior of the guide sleeve; the punching part is provided with a shape which is matched with the containing hole in the cylindrical body of the female die, so that the guide sleeve moves upward in the longitudinal direction to enable the cushion block to be inserted into and matched with the cylindrical body of the female die and supported on the base part of the female die, and the male die to downward moves in the longitudinal direction to enable the guide part to slide in the guide sleeve and the punching part to punch a rough sheet and to obtain a finished sheet with a preset shape.

The apparatus comprises holder (20) with a seating face on which a container such as a cupshaped article (1) stands. Air is supplied through channels and air pressure is balanced so as to hold the article (1) against the face. The profile of the apparatus guides a base feature, or “stand” of the article (1) into the holder (20) and onto the seating face (23), and contacts the article (1) radially outside the seating face (23). The apparatus also has a concentric outer sleeve (25) to provide the additional radial contact and resist lateral movement of the article (1) while maintaining concentricity.

The invention provides a valve position indicator, and aims to solve the technical problems that the valve position indicator is in rigid connection with a valve shaft and the valve shaft generates vibration under a normal working condition, so a travel switch and components in a potentiometer can be damaged, and the service life of the valve position indicator is shortened. The key points of the invention are that: the travel switch and the potentiometer are arranged on a rotating shaft; the rotating shaft is arranged on a support in a shell; an elastic clip is groove-shaped, and the cross section of the elastic clip is dovetail-shaped; and a base plate of the elastic clip is fixed on the rotating shaft, and the opening of the clip faces outwards. The valve position indicator has the advantages that: the elastic clip is elastically connected with the valve shaft and can compensate the vibration of the valve shaft, so that the service life of the valve position indicator is greatly prolonged.

An arrow insert with threaded stem for retaining an arrow tip preferably includes an arrow tip and an arrow insert. The arrow tip includes tip portion formed on one end and a threaded tap formed in an opposite end thereof. An O-ring counter bore is formed in the opposite end. The arrow insert preferably includes a barbed shank, an arrow shaft contact portion, an end flange, an arrow tip locator, at least one O-ring groove and a threaded stem. The barbed shank extends from one end of the arrow shaft contact portion. The end flange extends from an opposing end of the arrow shaft contact portion. The arrow tip locator extends from the end flange. The threaded stem extends from the arrow tip locator. The at least one O-ring groove is formed in the arrow tip locator.

A bearing structure for an X-ray tube is provided that includes a journal bearing shaft with a radially protruding thrust bearing encased within a bearing sleeve, one of which rotates relative to the other. The stationary component, e.g., the journal bearing and / or the thrust bearing includes at least one vent groove formed therein that improves the ability of the journal bearing structure to enable gases trapped by the liquid metal within the bearing assembly to escape through the vent groove to the exterior of the X-ray tube. By adding a strategically located channel or vent groove of sufficient size in at least one of the journal bearing or the thrust bearing, the pressures resisted by the seal created between the liquid metal and the vent groove(s) in the bearing components is significantly reduced, allowing escape of the gases to avoid detrimental effects to the operation of the X-ray tube, while maintaining the load carrying capacity of the bearing assembly.