摘要:
Dispositif de freinage pour chariots ou caddies à roues destiné à fonctionner lorsque l'on essaie de faire sortir le chariot d'une zone définie. Ledit dispositif peut être monté sur une roulette (4) du chariot. Il comprend un déclencheur (10), actionné par la force magnétique, qui fonctionne à l'aide d'un élément de blocage (22) de manière à libérer ledit élément de blocage lors de l'actionnement de l'élément de freinage (2) lorsque ledit dispositif passe à proximité d'un matériau magnétique. Ledit matériau magnétique peut être avantageusement placé dans le sol (9) à la limite de la zone définie, le déclencheur (10) comprenant également au moins une partie en matériau magnétique disposé de manière à agir mutuellement avec le matériau situé dans le sol (9) lorsque le dispositif passe au-dessus dudit matériau. Dans la position de freinage, l'élément de freinage (2) entre en contact avec le sol (9) et fonctionne de manière à soulever une ou plusieurs des roulettes du chariot (4) afin qu'elles cessent de toucher le sol en cas de mouvement continu du chariot, de façon à empêcher le mouvement continu dudit chariot.
摘要:
A strip merchandiser of plastic sheet for hanging from the front edge of a display shelf (28) has a cutout defining an upwardly pointing hook (34) to suspend products from the strip. In order to reinforce the hook and enable more than one product to be suspended therefrom, the hook (34) and reinforcement section (16) of the strip below the hook are folded back about the longitudinal center line of the strip. Opposite sides (16L, 16R) of the reinforcement section are secured together (38, 40) behind the strip.
摘要:
A vitreous cutter for use in removing vitreous from the eye during intraocular surgery. The cutter includes an outer tube (1,52,81) having a side-facing opening (6,52,82) with a perimeter edge forming a cutting blade (52a). An inner tube (2,50,80) is received coaxially in the outer tube and is provided at one end with a side facing opening (5) whose perimeter edge forms a second cutting edge (5A,58a,88a). The inner tube (2,50,80) is rotatable about its axis relative to the outer tube (1,52,81) to cause the side facing openings (5,6,52,82) to alternately rotate into and out of alignment. This causes the cutting edges (5A,52a,58a,88a) to sever vitreous sucked into the aligned openings by suction pressure applied to the opposite end of the inner tube. Relative rotation of the two tubes is caused by an air-driven reciprocating piston (3) having a rack (11) that engages a pinion (9) attached to the inner tube.
摘要:
A gas pressure regulator for controlling the pressure of gas, e.g. liquefied natural or petroleum gas, supplied to gas utilising means from a container of pressurised, e.g. liquefied, gas includes, in a gas supply passage (50), a valve assembly (1) for controlling flow of gas in the passage. The valve assembly comprises a body (2) defining an inlet (3) and an outlet (4) for gas, a main pressure responsive valve (9) for controlling communication between the inlet and outlet and which is arranged to be maintained open for so long as the pressure of gas at the inlet (3) is above a predetermined level and to close and remain closed when the pressure is below the predetermined level, and an auxiliary valve (11) which is manually operable to open communication between the inlet (3) and the outlet (4) when the inlet pressure is below the predetermined level and the main valve (9) is closed. The valve assembly may comprise a generally cylindrical body (2) having a transverse wall (12) between the inlet and the outlet and provided with two openings (8, 10), one controlled by a pressure responsive main valve member (9) movable axially towards and away from the opening (8) in dependence on the pressure and the other controlled by an auxiliary valve member (11) manually rotatable about the axis of the body to open and close the opening (10). In use, the main valve is arranged to cut off the flow of gas to the utilising means before the container is exhausted to warn the user that the container is nearly empty and needs replenishing. The flow of gas can be reinstated, while a replacement container is being organised, by manual operation of the auxiliary valve means.
摘要:
A method for attaching a polymethylmethacrylate haptic (20) having a colored core to an optic (10) of an intraocular lens, containing the steps of providing the periphery of the optic with a pair of intersecting holes (303,304), inserting an end of the haptic (20) into one hole (303), inserting an end of an polymethylmethacrylate anchor strand (25) having a colored core into the second hole (304) so that the end of the anchor strand and the end of the haptic (20) intersect, aiming a laser capable of a transmitting energy of a visible wavelength at the intersection of the first and second holes (303,304), firing the laser through the optic at the point of intersection of the end of the haptic (20) and the end of the anchor strand (25), wherein the optic transmits, but essentially does not absorb, the laser energy and the core of the anchor strand (25) and the core of the haptic (20) absorb a portion of the laser energy sufficient to fuse the end of the anchor strand and the end of the haptic at their point of intersection.
摘要:
Un système de refroidissement entraîné par l'échappement pour un moteur à combustion interne (20) comprend un turbo-refroidisseur (26) comportant une turbine (26a) entraînée par l'échappement, ainsi qu'une soufflante canalisée (26b) afin de produire un flux canalisé d'air de refroissement destiné à être utilisé dans un ou plusieurs échangeurs thermiques (25, 34, 234, 238) de fluide de moteur à combustion interne. Le système peut refroidir divers fluides fonctionnels du moteur (20) tels que l'air de charge du cylindre comprimé et le liquide de refroidissement du moteur, et peut dissiper les pertes de chaleur du moteur. On a prévu une commande (300) régulant la production d'air de refroidissement. Ledit système peut assurer à des moteurs à combustion interne des températures et des pressions de gaz d'échappement sensiblement diminuées, avec une poussée utilisable comme force motrice et avec une fiabilité et un rendement sensiblement améliorés.
摘要:
A modular apparatus is provided which combines the advantages of a total hip prosthesis with the superior fixation of an interlocking intramedullary nail. The apparatus includes an intramedullary rod, a separate prosthetic, generally spherical surface member (18) for forming the exterior of the femoral head, and means for securing the rod to the prosthetic surface. The prosthetic surface member (18) may be a total hip prosthesis or a femoral head resurfacing or replacement member.
摘要:
The dispensing machine in the form of a vending machine, for vending generally planar articles 3 which may be rigid or flexible, comprises an article feed system 2 comprising a first generally horizontal conveyor 5 on which the articles are arranged generally vertically side-by-side and by which they are moved towards a second generally transversely extending conveyor 6 which engages and moves the endmost article from the first conveyor and supplies it to an outlet slot 4 in the housing 1 of the machine from which it is removed by the user. The second conveyor 6 may move articles from the first conveyor generally vertically upwardly or generally horizontally. The article feed system 2 is driven by operation of a handle 55 by the user through an intermediate mechanical drive means connected between the handle 55 and the article feed system 2 and means may be provided for preventing operation of the article feed system in the absence of the provision by the user of the required amount of money for an article.