398results about How to "Friction minimization" patented technology

A method for deploying a cardiac-assist device is disclosed. In accordance with the illustrative embodiment, an introducing tube, such as a catheter, sheath, or the like is inserted into the vascular system and advanced beyond the aortic arch. The cardiac-assist device is then inserted into the tube, advanced through it, and deployed from its distal end. In some embodiments, the diameter of the cardiac-assist device expands when it deploys from the distal end of the tube.

A medical device for interposition between a first flow path and at least one second flow path is provided. The device includes a first surface facing toward the opening of at least one second flow path; and a second surface facing away from the opening of at least one second flow path. When the device is in the operative position, it extends less than the complete circumference of the first flow path and substantially covers the opening of at least one second flow path. The device contains one or more surface features to facilitate chronic implantation. The device further has one or more characteristic porosities. Different configurations are indicated depending on the pathophysiology being treated and dictate the characteristic porosity of the device. In some, cases blood is prevented from reaching the second flow path and in other cases, particulates traveling within the blood are prevented from reaching the second flow path. Methods of preventing emboli or blood flow into the second flow path are also provided. Methods and devices for delivery are also provided.

A microsurgical instrument has a pair of operative surgical surfaces that are moved relative to each other in shearing or grasping procedures performed by the instrument. The instrument has a handle containing an elongate center rod with a ring mounted for reciprocating movement on the rod. A tube is secured to the ring and a shaft extends through the tube and is secured to the rod. The handle also includes a plurality of resilient arms that extend along the length of the rod and engage against a sliding surface of the ring on the rod. The plurality of actuator arms are alternatively manually compressed radially inwardly by the surgeon's hand and released by the surgeon's hand to allow the arms to flex radially inwardly and outwardly. The inward and outward movement of the plurality of arms reciprocates the ring on the handle rod and causes the tube and shaft to move axially relative to each other.

An integrated expansion turbine/electrical generator assembly (collectively referred to as a “turbo-generator”) suitable for use in waste heat recovery and similar applications. The turbo-generator uses a common shaft mounting a one or more stage expansion turbine and a homopolar electrical generator. Magnetic levitating axial and thrust bearings are used to hold the common shaft in its proper position with a fixed housing. The magnetic bearings minimize frictional losses, allowing the common shaft to spin at a very high rotational velocity. Sensor rings continually monitor the common shaft's position. This information is used by control electronics to regulate the magnetic bearings in order to hold the rotating shaft's position. Electrical energy is extracted from the rotating shaft in the form of a direct current. Preferably integrated power-switching electronics are used to generate single or three-phase AC power, which can be phase-matched to an existing power grid or other application.

A coil spring in accordance with the present invention includes inner coils formed as a wire is wound plural times; and an inflection portion having a nonlinear shape and formed at an outer circumferential surface of the end coil, which is positioned toward the inner coil. When connected to other component and is constricted and relaxed to absorb an impact or a vibration transmitted from the outside, the coil spring minimizes friction generated between itself and other components so that reliability of a reciprocating compressor having the coil spring can be improved.

An orthodontic bracket is described and which includes a bracket body having an arch wire slot formed therein; and a movable gate which slideably cooperates with the bracket body, and is moveable between a first, open position, to a second, closed position, and wherein the gate is designed so as to minimize the frictional engagement of the arch wire by the gate as the gate is moved from the first open position to the second closed position.

The present invention relates to a connection arrangement and a method of assembly, for providing a substantially tamper resistant connection with at least a first medical device. The connection arrangement (1) having a centre axis (A), the connection arrangement (1) comprises; a first connection member (21,161,521,621) for connection to the first medical device by means of a rotational motion in a first direction, and a body (60,120, 504, 603). Additionally the first connection member (21,161,521,621) and the body (60,120, 504, 603) are connected directly or indirectly together via at least one designated ruptureable retaining member (41, 141, 541, 641), the designated ruptureable retaining member (41, 141, 541, 641) is arranged to rupture at a predetermined breaking force, wherein the first connection member (21,161,521,621), and thereby the first medical device after assembly, can be displaced with respect to the body (60,120, 504, 603) after rupture. The present invention provides for a substantially tamper safe connection arrangement which disables accidents such as wrongly disengage a connected medical device. A safer handling is provided for the involved user(s).

Disclosed therein is a golf club for preventing a hook and a slice, which can allow a golfer to easily control the golf club while swinging the golf club since a sole progression having a side width extending backwardly from a club head face and a sole plate having a bottom area are formed small by cutting a part of the rear side of a club head, thereby preventing the hook and slice due to a light weight of the club head and minimization of a frictional area between the ground and the club head.

An injection device including a drive unit, a delivery unit, a dosing unit, a trigger for triggering an injection, a first coupling mechanism between the drive unit and the delivery unit, and a second coupling mechanism between the dosing unit and the drive unit, wherein the drive unit is tensioned by a rotation of the dosing unit and when the drive unit is tensioned the first coupling mechanism is disengaged and the second coupling mechanism is engaged, and wherein when an injection is triggered first the first coupling mechanism is engaged and then the second coupling mechanism is disengaged. In some embodiments, the device may include a third coupling mechanism which only releases the delivery unit after the engagement and disengagement which follow a triggering.

Laminated fabric panels and a method of assembling such panels. A garment, for example, is made of first and second parts assembled to one another by superimposing the first part and the second part so that their inner surfaces face one another; welding the two parts along a weld line; flattening the two parts, the weld line being arranged on the outer side; applying a reinforcement strip to the welding line on the outer side of the garment.

A friction minimizing element such as a smooth hardened ball, a dimple in the sear spring (steel, stainless, plastic, carbon fiber or titanium material) is employed to minimize sliding friction between the spring and the disconnector or between other sliding components of a firearm mechanism, particularly the trigger mechanism of a handgun or other firearm. In addition, the same technology can be applied to the trigger bow of a semi-automatic handgun by placing an additional ball or dimple in the trigger bow that minimizes sliding friction between the rear transverse element of the trigger bow and the disconnector of the trigger mechanism. The benefits of the sear spring or the trigger bow modifications can be applied together or separately in the trigger mechanism. Each adds an individual benefit of minimizing sliding friction between engaging trigger components and thus preventing trigger creep as the trigger mechanism is actuated.

An apparatus and method is described for testing a multi-hole fuel injector nozzle. The apparatus comprises mounting means for the multi-hole nozzle and fuel supply means for supplying fuel to the multi-hole nozzle. The multi-hole nozzle is mounted outside a measurement chamber for capturing the fuel spray from an individual spray hole outlet of the multi-hole nozzle. In one embodiment, the apparatus includes a spray target plate, located within the measurement chamber, at which the fuel spray is directed. The spray target plate (28) is connected to a remote pressure sensor, which is used to determine the spray force of the fuel spray acting on the spray target plate. The apparatus is further arranged to determine the mass flow rate of the fuel spray. A new parameter, referred to as ‘momentum efficiency’ is defined, and calculated using the determined values of spray force and mass flow rate.

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).

Embodiments of the present invention provide drug-delivery devices comprising a drug reservoir chamber containing a substance to be delivered, in fluid connection with a drug administration means, and at least one displacement-generating battery cell coupled to said drug reservoir chamber by a coupling means, the at least one displacement-generating battery cell comprising an element that changes shape as a result of discharge of the battery cell so as to cause a displacement within the battery unit, the arrangement being such that the displacement derived from said battery unit is conveyed by said coupling means to cause displacement of at least a portion of a wall of said drug reservoir chamber reducing the volume of said drug reservoir chamber such that said substance is expelled from said drug reservoir chamber towards said drug administration means upon discharge, thereby being a self-powered drug delivery device.

Provided is a high speed and high efficiency IPM (Interior Permanent Magnet) motor and a slim type vacuum inhaling apparatus using the same, which establishes a passage path of introduced air into a path of air-cooling the inside of a stator and a circuit element to thus cool heat that is produced from the IPM motor without a special heat radiator. The IPM motor includes: a stator having a number of tees which are protruded so as to form a number of slots on the inner circumferential wall of a cylindrical body, and a stator coil which is partially wound around the slots; and an IPM type rotor having a rotor core at the central side of which a rotating shaft is mounted, and a number of permanent magnets which are fitted into a number of permanent magnet insertion holes which are formed on the identical circumference of the rotor core, and which is rotated by the stator.

A device for manipulating a tarpaulin so as to selectively cover and uncover a top aperture of a container. The top aperture defines an aperture peripheral edge, the aperture peripheral edge including two substantially opposed substantially longitudinal segments. The tarpaulin is configurable between an extended configuration and a retracted configuration. In the extended configuration, the tarpaulin substantially covers the top aperture. In the retracted configuration, the tarpaulin is substantially retracted from the top aperture. The device includes an elongated guiding component defining a guiding component longitudinal axis. The guiding component is securable to the container so as to extend at least partially along at least one of the longitudinal segments. A tarpaulin mounting component is usable for attaching the tarpaulin thereto. A link, mechanically coupled to the guiding component, is longitudinally movable therealong between a link proximal position and a link distal position. The tarpaulin mounting component is operatively coupled to the link in a manner such that when the link is in the link proximal position, and the tarpaulin is attached to the tarpaulin mounting component, the tarpaulin is in the retracted configuration. When the link is in the link distal position and the tarpaulin is attached to the tarpaulin mounting component, the tarpaulin is in the extended configuration.

A pumping station for pumping a cooling and lubricating fluid containing particulate matter such as machining chips has a compact structure with a relatively low total structural height, while still assuring that the chips are conveyed with the fluid to the pump suction inlet, without settling-out or accumulating in the apparatus. The pumping station (1) includes a collecting container (5) with at least one pump (6) arranged therein, a chip breaker (7) and a supply conduit arrangement. The supply conduit arrangement includes a supply line (2) through which the cooling and lubricating fluid containing the machining chips is received from a machining tool or transfer station. Furthermore, two branch lines (3) and (4) are interposed and connected between the supply line (2) and the collecting container (5). A first branch line (3) conveys the fluid, from which the chips have been removed, with a slight downward slope toward the collecting container (5). The second branch line (4) conveys the chips that have been removed from the fluid flow. A scraper conveyor or the like conveys the chips upward through the second branch line (4), and the outlet end of the branch line (4) is arranged directly above the chip breaker (7), which in turn is arranged above the outlet end of the fluid conveying branch line (3). The comminuted chips thus fall from the breaker (7) directly into the flow of fluid, in which the chips are then entrained and carried along into the sump (13) of the collecting container (5), where the chips and fluid are sucked and pumped away by the pump (6).