1367 results about "Radial displacement" patented technology

A method for treating presbyopia by performing ablative photodecomposition of the corneal surface. The offset image of a variable aperture, such as a variable width slit and variable diameter iris diaphragm, is scanned in a preselected pattern to perform ablative sculpting of predetermined portions of a corneal surface. The scanning is performed to ablate an optical zone sized to match the patient pupil with a peripheral transition zone outside the pupil. The shape of the ablated optical zone is different from the shape of the final optical correction on the anterior surface of the cornea. The optical zone corrects for near-vision centrally and far-vision peripherally. A movable image displacement mechanism enables radial displacement and angular rotation of the profiled beam exiting from the variable aperture. The method enables wide area treatment with a laser having a narrower beam than the treatment area, and can be used in the treatment of many conditions in conjunction with presbyopia such as hyperopia, hyperopic astigmatism and irregular refractive aberrations.

A mounting arrangement for a refrigerator fan, comprising an electric motor (11) to whose shaft is affixed a propeller (12) with an axial flow passing through a refrigerated air outlet (4b) provided through an internal divisional wall (6) of the refrigerator; a support frame (20) having a marginal portion (21) and incorporating a central hub (22) in which is affixed the electric motor (11); a flexible support (30) in the form of an annular flange presenting an outer portion (31), which is peripherally and removably affixed to the contour of the refrigerated air outlet (4b), an inner portion (32) provided with a central opening (35) and with retaining means (36), which are removably locked to the marginal portion (21) of the support frame (20); and an annular membrane portion (33) interconnecting the outer portion (31) and the inner portion (32), in order to allow for small relative axial and radial displacements therebetween.

A reclosable cup lid thermoformed from a polymeric material includes a domed member and an elongate closure panel. The thermoformed domed member is provided with a sidewall and a top wall, the top wall having upper and lower surfaces and a drinking aperture at a periphery of the top wall. The top wall further defines a pair of slide tracks depending from the lower surface of the top wall and also defines a post aperture disposed inwardly with respect to the drinking aperture. The elongate closure panel has opposed engagement edges, an upper surface provided with a post projecting upwardly therefrom, and a drinking aperture sealing area. As assembled, the domed member and elongate closure panel are configured such that the opposed engagement edges of the elongate closure panel are slidingly mounted in the slide tracks for generally radial displacement.

A clearance sensing system for a rotating machine includes a plurality of sensor probes disposed within a stationary shroud of the rotating machine. Each of the plurality of sensor probes is adapted to measure a parameter indicative of an axial and a radial displacement of a rotating component within the shroud and to produce a signal that corresponds to the parameter. In certain embodiments, this parameter may include a capacitance between the rotating component and the sensor probe. The clearance sensing system further includes a circuit that receives the signal from each of the plurality of sensor probes and determines (a) the axial displacement of the rotating component within the shroud and (b) a radial displacement of the rotating component relative to the shroud.

The retention balloon of the Foley urinary drainage catheter is replaced by a new self-retaining system. This new self-retaining catheter eliminates the problem of residual urine and also of bladder wall irritation caused by continuous contact with a spherical retention balloon; it also does not rely on a stylet for placement. The new system may use an internal control wire that reversibly foreshortens the proximal end of the catheter thus radially displacing longitudinal strips defined in the proximal catheter to form retention wings. Alternatively, a balloon situated between the longitudinal strips is inflated to force open the retention wings once inside the urinary bladder. Radial displacement of the retention wings widens the spaces between the longitudinal strips, these spaces constituting the drainage apertures which permit complete emptying of the urinary bladder, thereby eliminating a source of bladder irritation. The radially displaced retention wings abut the bladder wall in a non-continuous manner thereby reducing the area of bladder-catheter contact and further reducing bladder wall irritation.

A reclosable cup lid thermoformed from a polymeric material includes a domed member and a closure panel. The thermoformed domed member is provided with a sidewall and a top wall, the top wall having upper and lower surfaces and a drinking aperture at a periphery of the top wall. The top wall further defines a pair of engagement tracks depending from the lower surface of the top wall and also defines a post aperture disposed inwardly with respect to the drinking aperture. The closure panel has opposed engagement edges, an upper surface provided with a post projecting upwardly therefrom, and a drinking aperture sealing area. As assembled, the domed member and closure panel are configured such that the opposed engagement edges of the closure panel are slidingly mounted in the engagement tracks for generally radial displacement.

A blade retention system for retaining blade roots in slots of a rotor hub disk, the rotor blade having a radially outward blade tip requiring surface material removal by grinding to acquire a finished ground surface, having a blade root retention tab with an elongated web of thickness less than the gap between the slot and blade root and with at least two deformable protrusions extending radially to a height exceeding said gap, the protrusions adapted to deform under compression radially inwardly on sliding engagement with the blade root in the slot and to exert a reaction force radially outwardly on the blade root of a magnitude sufficient to secure the blade tip during surface removal grinding of the blade tip against radial displacement and against rotational displacement.

This invention relates to a radial and axial six digits integral electric vortex sensor, which characterized in that it is composed of the six digits integral electric vortex pick-off and the probe, wherein between the sensor probe and the probe there forms the radial probe space and the axial probe space, and the said sensor has six channels, whose probes are integrated in a sensor seat with the preamplifier, and the sensor is composed of the radial displacement probe, axial displacement probe, preamplifier, and power information output line, wherein the four radial probes probe the X direction and Y direction displacement information separately, and the axial probes probe the Z direction displacement information, the preamplifier and the probes of the six channels are integrated, which can be designed into the radial and axial six digits integral electric vortex sensor whose probe interfaces are external according to the structure demand. This invention improves the probe precision and stabilization, and reduces the volume and weight of the sensor greatly.

A dumbbell with a selectable number of weight disks includes a handle with pins projectable in opposing directions, a base assembly for accommodating two sets of weight disks standing on edge and provided with openings. The projection lengths of the pins are stepwise selectable in order to permit selection of the number of weight disks supported on the handle. Neighbouring weight disks have mutually engaging connecting arrangements which axially interconnect the weight disks but which permit radial separation. The weight disks are planar with a circular, unbroken peripheral edge and with the openings located centrally. All connecting arrangements have a longitudinal centre line which coincides with a diameter line for the weight disks and with the permitted radial displacement direction between two neighbouring weight disks.

A dispenser for a coreless roll product having a pair of depressions defined in the ends of the coreless roll. The dispenser includes: a frame; mounting device for permitting the frame to be mounted to a stationary surface such as a wall; and a coreless roll securing device for securing a coreless roll product for rotation within the frame. The coreless roll securing device includes a pair of cooperating plungers. Each plunger includes: (1) a base, the base being fixed to the frame; (2) a distal end, the distal end having a radius of curvature; and (3) a central shaft, the central shaft connecting the base and the distal end and providing sufficient length so the plunger has a length at least as great as its widest dimension so the plunger is adapted to penetrate a depression defined at an end of a coreless roll product, so radial displacement of the coreless roll with respect to said frame is prevented during use. Also a method for installing a coreless roll of a product.

An online monitoring device for the radial rotation accuracy of a main shaft is disclosed, wherein a monitoring ring is installed at the radial measuring position of the main shaft; three eddy-current displacement sensors are installed on the monitoring ring; the proximitors of the eddy-current displacement sensors are connected with the terminal board of a data acquisition board card; the data acquisition board card is connected to an industrial computer via a PCI (peripheral component interconnection) slot; when the main shaft is in a rotating state, the eddy-current displacement sensors convert the measured voltage signal to a standard voltage signal via the proximitors; the analog signal is converted to a digital signal via a signal conditioning circuit module and an A/D (analog/digital) conversion module on the data acquisition board card, and then the digital signal enters into the industrial computer; the radial displacement signal of the main shaft is obtained by signal acquisition and analysis software; the roundness error of the main shaft is separated out by applying a three-point error separation technology, thereby obtaining the rotation error of the main shaft; and finally the analysis result of the rotation accuracy of the main shaft is displayed. The online monitoring device for the radial rotation accuracy of a main shaft has the advantages of being high in accuracy and convenient in adjustment.

The invention discloses a tester for testing soil vertical and radial expansive force and expansive deformation. The tester comprises a frication force reducing device, a sample protecting ring component, a confining pressure and radial deformation testing component, a vertical pressure and deformation testing component and a data acquirer. The friction force reducing device is located in a soaking tank; the sample protecting ring component is placed on the friction force reducing device at the center of the soaking tank; and the data acquirer is connected with sensors in the vertical pressure and deformation testing component and the confining pressure and radial deformation testing component via data lines, and transmits acquired data to a computer. The tester can be used for testing vertical and radial expansive forces in a sample saturation process when vertical and radial displacements are not changed and obtaining the change law of the vertical and radial expansive forces, testing vertical and radial expansive forces under the condition of different vertical displacements in the sample saturation process when the radial displacement is changed or not changed, and the like.

The invention provides a method of determining long-term strength in rock creep tests, and relates to the technical field of rock mechanics. The method includes coring field rock samples; processing rock cores to form test pieces; mounting and adjusting axial and radial displacement sensors for the test pieces; applying axial and radial load to the test pieces until the text pieces are destroyed;acquiring test data, and converting and outputting the test dada; plotting axial and radial creep curves of the test pieces; computing creep Poisson ratios at various moments; determining the long-term strength of rock. The method for determining the long-term strength in the rock creep tests has the advantages that influence of axial and radial deformation in the rock creep procedures on the performance of the rock is comprehensively considered according to actual ductile dilation deformation of the rock, the creep time is segmented, creep Poisson ratio -time curves are plotted, the long-termstrength of the rock is determined according to stress corresponding to data of inflection points of the curves, accordingly, the timeliness of the rock can be effectively reflected by the solved long-term strength, subjective judgment can be eliminated, and the method is simple and reliable, is high in accuracy and is easy to popularize and apply to actual rock engineering.

The invention provides a wafer pre-alignment method, which comprises the following steps of: calculating shape center position coordinates of a wafer, radial displacement maximum offset emax and an included angle of a radial displacement maximum offset part and horizontal Y direction by using a high-accuracy laser transmitting sensor according to one-circumference data of the edge of the wafer; driving the wafer to rotate at an angle so as to position the radial displacement maximum offset emax and the horizontal Y direction on a straight line, thereby finishing shape center positioning of the wafer; and accurately positioning a notch of the wafer according to a shape center algorithm. According to the wafer pre-alignment method, the edge of the wafer is detected by using a light transmitting sensor, and the positions of a shape center and the notch of the wafer are determined by using the shape center algorithm, so that the accuracy of the positioning method is effectively improved, the time and the space occupied by a pre-alignment are reduced, and the cost is reduced.

The invention relates to a magnetic suspension artificial heart pump, comprising a frame, a motor, a magnetic bearing and a blood pump blade wheel, wherein, the blood pump blade wheel, a motor rotor and a magnetic bearing rotary magnetic ring form a combined rotor to be mounted in a blood separating sheath with blood inlet and outlet, a motor stator, a fixed magnetic ring of the magnetic bearing and a radial displacement sensor combine a combined stator to be arranged at an outer ring of the blood separating sheath to be fixed with the frame. The invention realizes magnetic suspension on the rotor, with reliable operation, and uses blood separating sheath to avoid polluting blood from heart pump most. The invention has compact structure, small volume, better integration, long service life, and better transplant property.

A chuck for a percussively driven working tool includes at least one radially displaceable, locking member (3) and a locking element (5, 6) for blocking radial displacement the at least one locking member outwardly. The locking member has a locking surface (4) located radially adjacent to the at least one locking member (3) and formed as a radially damping surface.

A fluid dispenser comprising:

• • a fluid reservoir (1) provided with an opening (11);
  • a fluid dispenser member (2), such as a pump or a valve, said member comprising a body (21) and an actuator rod (23) that is displaceable down and up along an axis X;
  • a fastener ring (3) for fastening the dispenser member on the opening of the reservoir;
  • a pusher (4; 4′; 4″) that is axially displaceable down and up so as to displace the actuator rod (23); and
  • a dispenser endpiece (50) defining a dispenser orifice (51);
  • displacement means (6, 4; 6′, 7; 6″, 7, 4″) that are suitable for displacing the endpiece (50) both in turning about the axis X and in radial translation, the radial distance between the endpiece and the axis X varying as the endpiece turns about said axis X, such that the endpiece is displaceable between an extended position remote from the axis X and a retracted position close to the axis X, the displacement means comprising a rotary actuator member (4; 7) that turns about the axis X, the endpiece (50) being constrained to turn with said actuator member, and a cam path (62) that is prevented from turning relative to the reservoir (1), the radial distance between the path (62) and the axis X varying along the path, the endpiece (50) being engaged with the cam path in such a manner that it follows the cam path while it is being turned by the actuator member (4; 7),
  • the fluid dispenser being characterized in that the cam path (62) is formed by a cam element (6″) that is mounted on a ferrule (8) that is mounted in stationary manner relative to the reservoir (1), the cam element (6″) being prevented from turning relative to the ferrule (8), but being capable of being displaced axially, the pusher (4″) being in engagement with the ferrule (8) via a second threaded cam path (84), the pusher (4″) being turned by the actuator member (7), the pusher (4″) being displaced axially relative to the ferrule (8) and to the actuator member (7) by following the second threaded cam path (84) while said pusher is being turned by the actuator member, such that turning the actuator member simultaneously causes the rotary axial displacement of the pusher and the rotary radial displacement of the endpiece.