1142results about How to "Reduce radial size" patented technology

An electronic imaging device (27) includes an optical objective (28) for collecting optical radiation from an object, the objective having an optical axis, and an image sensor (24), including a matrix of optical detectors arranged in a plane that is substantially non-perpendicular to the optical axis, the image sensor having a lateral dimension in the plane. A turning mirror (38) has an optical surface that is positioned so as to reflect the radiation collected by the objective in order to form a focused image in the plane of the image sensor, while a maximum distance from the optical surface to the plane of the image sensor is substantially less than the lateral dimension of the image sensor.

An apparatus for use in a wellbore is described, the apparatus having a tubular body and a throughbore which defines a primary fluid path through the apparatus. An expanding element is disposed around the tubular body and is configured to provide an annular barrier in a space between the tubular body and a surrounding wall. A conduit defining a secondary flow path through the apparatus is provided, and is configured to be in fluid communication with at least one alternate path, such as a shunt tube. The conduit is arranged to vary the secondary flow path along a longitudinal direction of the apparatus, for example to redirect the flow path to a radial position closer to the tool body. The conduit is configured to have a reduced effect on the operation of the expanding element, while still allowing the conduit to be coupled to alternate flow paths of adjacent apparatus.

A packing sleeve for use with a safety needle that automatically covers a tip of a needle following removal of the needle from a patient includes a generally hollow body having a longitudinal axis and a distal end and an open proximal end. The body surrounds at least a portion of the safety needle and has at least one track having an activation leg and a releasing leg. The at least one track is in sliding engagement with at least one member of the safety needle such that the motion of a portion of the safety needle relative to the body is dictated by a path the at least one member follows along the respective at least one track. The safety needle is in an initial position when the at least one member is proximate a first end of the activation leg and in an intermediate position when the at least one member is proximate a second end of the activation leg. The releasing leg extends from the second end of the activation leg and allows the at least one member to be slid toward and then removed from the proximal end of the body.

The invention discloses a floating auxiliary roller type overrun clutch which comprises an outer ring, an inner ring, rolling bodies and auxiliary rollers, wherein engagement spaces used for being engaged with or separated from the rolling bodies are formed between the outer ring and the inner ring; the auxiliary rollers are parallel to an axial line of the overrun clutch and are spaced from the rolling bodies; and the auxiliary rollers are arranged between the rolling bodies in such a way that the auxiliary rollers can move in a circumferential direction of the overrun clutch. According to the floating auxiliary roller type overrun clutch, the processing of a limiting seat is avoided, the processing process is simplified, the working efficiency is improved, and the processing cost is reduced; as the auxiliary roller structure is adopted, the axial length of the overrun clutch and the rolling bodies can be theoretically infinitely prolonged, the engagement length is prolonged, the bearing capacity of the overrun clutch is increased, the radial size of the overrun clutch under higher bearing capacity is reduced, and the service life of the overrun clutch is prolonged; and meanwhile, the probability of imbalance caused by application of a pretension force to point contact of each roller in the prior art is removed, thereby enabling each roller to keep parallel to the axial line of the inner ring.

A fluid pressure operated friction coupling comprising a multiple friction disc assembly having a single piston actuator and having first and second springs operatively configured and arranged in response to pressurization of the piston actuator to selectively engage first and second sets plates and friction components for varying the gain of the coupling.

A tape-reinforced tubular vascular graft formed of sintered fluoropolymer(s), such as expanded, sintered PTFE. The graft includes a base graft and a reinforcing tape applied thereto. The tape may be spirally wrapped about the graft or spirally wrapped into a tube about a cylindrical mandrel and then applied to the exterior of The graft. Radial shrinkage of the combined base graft and tape, or of the reinforcing tape tube, renders the vascular graft subsequently radially enlargeable by more than 5%, without tearing or breaking of the reinforcement tape layer of the graft. Radially enlargeable grafts of the present invention may be combined with various types of stents or anchoring systems, to form endovascular graft devices which are transluminally insertable and implantable within the lumen of a host blood vessel. Alternatively, radially enlargeable grafts of the present invention may be implanted by way of traditional surgical graft implantation techniques, without any radial enlargement of the graft at the time of implantation, so as to take advantage of the improved strength properties and suture-holding properties of the radially-shrunken tape-reinforced grafts of the present invention.

An abradable seal is provided to improve turbine performance by physically reducing the clearance between a flange portion of the nozzle and an opposed angel wing/seal plate member of the bucket. The provision of an abradable seal also mitigates angel wing/seal plate tooth or fin wear by providing for abradable contact without metal to metal hard rub.

According to problem solving means of the present invention, in a suspension device (S) comprising a motion transforming mechanism (T) for transforming a linear motion of a linear motion member (1) into a rotational motion of a rotating member (2) and a motor (M) connected to the rotating member (2) in the motion transforming mechanism (T), an air spring (AS) is provided, the air spring (AS) including a tubular air chamber (22) connected to the motor (M), an air piston (37) connected to the linear motion member (1) and being tubular and smaller in diameter than the air chamber (22), and a diaphragm (27) interposed between the air chamber (22) and the air piston (37), a stopper (38a) is provided on an outer periphery of the air piston (37), and a stopper seat (46) is provided on an inner periphery of the air chamber (22) so as to be put in abutment against the stopper (38a) upon maximum extension of the suspension device involving relative separation of the air chamber (22) and the air piston (37) with respect to each other.

A filter assembly employs inward and outward radially displaced portions of a peripheral shoulder on the cartridge as components of a cartridge compatibility matrix. Alternative base assemblies include mounting structures complementary to the configuration of the peripheral shoulder to exclude incompatible cartridges. The peripheral shoulder is preferably a roll seam connecting first and second sections of the filter housing. The invention further contemplates a pattern of radial protrusions from a portion of the cartridge housing received in a base receptacle as part of a cartridge compatibility matrix. The base receptacle is configured to receive only those cartridges having a compatible pattern of radial protrusions. A cartridge compatibility matrix including both inward and outward deformations of a cartridge peripheral shoulder and radial protrusions of the received portion of the cartridge housing can ensure both cartridge compatibility and a particular mounted position of the cartridge relative to the base.

The invention provides a radial insulation laminated conductive slip ring which belongs to electrical rotary adapter. Conductive ring sheets 3 and insulation sheets 4 are interval arranged on a slip ring shaft 1, and a section of the slip ring shaft 1 surface for mounting the conductive ring sheet is coated with polymer insulation material to guarantee the insulation between the slip ring shaft 1 and the conductive ring sheet 3. A brush 7 mounted on a brush bracket 9, which is mounted on a shaft sleeve 2, tightly contacts with the conductive ring sheet 3, rolling bearings are disposed between the slip ring 1 and the shaft sleeve 2 for supporting, when the slip ring 1 rotates relative to the shaft sleeve 2, the transmission for multi-channel electrical signals between the relative rotating parts can be realized via conductive ring sheet lead-out wires 8 and brush lead-out wires 6. The invention effectively simplifies the production procedure, and reduces the radial size of the slip ring, and increases the stiffness of the shaft.

A vibration damping device, including at least two damper assemblies connected in parallel, disposed coaxially, each damper assembly comprising at least one input component and one output component, a first damper assembly of the at least two damper assemblies comprising at least two dampers connected in series and coupled through an intermediary flange, and a second damper assembly of the at least two damper assemblies configured with relative rotation clearance, wherein the output component of the first damper assembly forms a unit with the output component of the second damper assembly, and the first and the second damper assemblies are radially disposed in radial direction on different diameters.

The invention discloses a single-drive synchronous unfolding mechanism provided with multiple folding control planes. Each control plane of a traditional small guided missile is independently driven by a torsion spring to be unfolded, synchronism is difficultly ensured, and the adopted unfolding mechanism enable the radial size of the guided missile to be large during folding. The single-drive synchronous unfolding mechanism comprises a cabin body, an actuator cylinder, a connecting rod and four unfolding mechanisms, wherein an actuator cylinder installing seat is fixed to the cabin, the actuator cylinder is connected with an actuator cylinder installing seat sliding pair, four actuator cylinder convex lugs are evenly distributed on the actuator cylinder, each actuator cylinder convex lug is hinged to the inner end of one connecting rod, and the outer ends of the four connecting rods extend out of installing holes formed in the unfolding mechanism respectively and are hinged to slide blocks of the corresponding unfolding mechanism. The unfolding mechanism comprises a rudder stick, the slide blocks, lug pieces, a middle rudder, a rudder tip, connecting rods and a spring locking mechanism, wherein the spring locking mechanism is used for locking the slide blocks and a rudder shaft. The transverse size of a missile body is effectively decreased during control plane folding. The controllability and synchronism in the unfolding process of the four control planes are ensured through driving of the single actuator cylinder.

A set of prefabricated tube bundle reactor subassemblies is proposed which are adapted to be assembled at a construction site to provide a tube bundle reactor for carrying out catalytic gas and/or liquid phase reactions. In accordance with the invention, the reactor shell and the reactor heads, on the one hand, and the tube bundle and the tube sheets, on the other hand, form separate subassemblies, more specifically at least one shell/head subassembly, at least one head subassembly, and at least one tube bundle subassembly. The subassemblies comprise means for vertically supporting the tube bundle subassembly and for pressure tightly connecting the shell/head subassembly to the tube sheets without requiring heat treatment during assembly of the subassemblies. Likewise proposed are a tube bundle reactor for carrying out catalytic gas and/or liquid phase reactions and an arrangement of the kind of tube bundle reactors mentioned.

The invention discloses a permanent magnet dual-coil-driven giant magnetostrictive actuator, which belongs to the technical field of hydraulic servo control. The actuator comprises an outer cover (3), a first end cover (2), a second end cover (12), a bobbin (19), a giant magnetostrictive rod (16), an output rod (14) and a preloaded spring (15). A bias magnetic field generation unit and a driving magnetic field generation unit are arranged on the bobbin (19). The actuator is characterized in that: the bias magnetic field generation unit comprises a bias adjustment coil (8) and a permanent magnet (5); and the driving magnetic field generation unit comprises a drive coil (9). The novel giant magnetostrictive actuator has the remarkable characteristics of high displacement output accuracy, quick response, low heat, intellectualization, bias magnetic field adjustability, preloading force mechanical/electronic joint adjustability and the like.

A sealing assembly including at least one first annular shield having a sleeve portion integral in use with a rotating member and a flange portion, which radially and overhangingly extends from the sleeve portion. Preferably, a second annular shield is arranged in front of the first shield with the interposition of an annular seal; wherein the sleeve portion of the first shield is delimited by a conic-truncated lateral mounting surface having a tapering facing so as to have a greater diameter arranged on the side of the flange portion and intended to couple in use with a mounting seat of the rotating member formed by a shallow recess delimited by a conic-truncated bottom wall having the same tapering as the lateral mounting surface and by an axial shoulder which is arranged on the side opposite to the flange portion.

A cylinder lock device (1) includes: a rotor (30) rotatably disposed inside a cylindrical case body (20), a key insertion hole (31) being formed in the rotor (30) to axially extend; tumblers (50) provided in the rotor (30) to be axially movable, the tumblers (50) being radially urged outward to be engaged with a sleeve (40), the engagement of the tumblers (50) with the sleeve (40) being released when a normal key is inserted into a key insertion hole (31); slide members (70) for axially moving toward a lever member (60) side whenever the sleeve (40) relatively rotates by a predetermined angle with respect to the case body (20); a clutch member (80) disposed between the rotor (30) and the lever member (60), the clutch member (80) being provided in the lever member (60) to be axially movable; and an urgement member (90) for urging the clutch member (80) to a rotor (30) side so that the clutch member (80) is engaged with the rotor (30), in which when the slide members (70) move toward the lever member (60) side, the engagement of the clutch member (80) with the rotor (30) is released.

The invention provides means by which access to the intracranial compartment is completely sealed from the skin and the scalp tissues, which makes it possible to change the drain when necessary without bringing the drain in the contact with the scalp. It also provides an improved ventricle draining system supporting a better fixation of the drain to avoid the drain from sliding. The drain comprises a fixture with a conduit defining passage through the fixture, the fixture being provided with fastening means for attachment of the fixture to an aperture in the cranial bone, a seal for sealed engagement with a catheter inserted in the fixture, and fastener for securing the catheter to the fixture.

A starting clutch includes a planetary mechanism; a first clutch for outputting a torque to an outer diameter portion of the planetary mechanism; a second clutch for outputting the torque to an intermediate portion of the planetary mechanism; and a lock mechanism for locking a reactive force from an inner diameter portion of the planetary mechanism.