摘要:
A collapsible bone screw for healing bone fragments across a bone fracture includes an externally threaded inner screw member and an externally threaded outer screw member. The inner screw member is initially screwed into an inner bone portion. An unthreaded portion of the outer screw member is movably joined to the inner screw member. The outer screw member is screwed until it gains purchase in an outer bone portion. As impaction occurs over time, the collapsible bone screw apparatus may shorten in length as the two screw members slide, telescope or otherwise axially move toward each other to shorten the overall length, thereby preventing any portion of the screw apparatus from protruding out of the bone. A bone screw kit of multiple inner and outer screw members are provided as well as a method of surgically fastening bone fragments.
摘要:
There is provided a blind rivet including an axially extending hollow tubular body having a tail end face at one end and a pre-formed radially enlarged flange at the other end, together with a mandrel having a stem which extends co-axially though the body and having enlarged head adjacent the tail end of the body, the stem having a weakened region immediately adjacent the head. There is also provided a method of fastening at least two workpieces using such a blind rivet, including providing the blind side of the workpieces with a countersunk region to accommodate the conically deformed tail end of the body after setting, substantially flush therewith.
摘要:
A stage for aligning a workpiece relative to analysing apparatus. The stage has a platform and means for maintaining a workpiece on the platform. The platform is operable to tilt relative to the analysing apparatus and thereby rotate the workpiece relative to the analysing apparatus.
摘要:
This invention relates to compounds of Formula I and the use of compounds of Formula I as neuroprotective agents in the treatment of neuronal disorders of the central and peripheral nervous systems. Formula I:
摘要:
This invention relates to compounds of Formula (I) and the use of compounds of Formula (I) as neuroprotective agents in the treatment of neuronal disorders of the central and peripheral nervous systems.
摘要:
A circuit protection device for protecting electrical circuits against voltage transients comprises a chip package which includes a threshold switch device formed from an amorphous composition.
摘要:
A support for holding beverage containers such as glasses, bottles, cups and the like, in an upright position while being used on a boat or moving vehicle. The support is fabricated from three wire elements, one of which forms a pair of opposed uprights interconnected by a transverse wire network that defines a bottom of a container receiving receptacle, the second of which is formed with a plurality of vertically spaced annular rings secured to the uprights and defining the sides of the container receiving receptacle, and the third of which forms a cantilever wall mountable member for pivotably supporting the container receiving receptacle. A screw and grommet arrangement is provided for pivotably and removably mounting the support on the wall.
摘要:
A method and means for determining the thickness, or curvature, of a thin film or stack of thin films disposed on the surface of a substrate having a curvature comprising generating a beam of radiation, focusing the beam through the one or more films onto a surface of the substrate, measuring the intensity across the reflected beam as a function of the angle of incidence of a plurality of rays derived from the focussed beam, determining the path of each of the plurality of rays and determining the thickness, or curvature of the film, or films, from the angular dependent intensity measurement.
摘要:
A method for processing data for a system model including the steps of providing a model specification having a plurality of types of items including at least one first item type wherein associated data is obtained from data input into the system and at least one second item type wherein associated data is obtained from an operation performed on the data associated with at least one item stored in a first database, inputting data into the system, searching the input data for first item types, storing data associated with first item types in the first database, reading the or one of the second item types in a determining step including determining whether the first database includes the or each prerequisite item necessary to determine the one second item type by obtaining associated data from an operation performed on data associated with at least one item stored in the first data base, storing the one second item type in the first database if the or each prerequisite item is present, successively reading each other second item type and storing it in the first database if the or each prerequisite item is present in the first database and outputting an indication that the system model can be produced if items of the model specification are stored into the first database.
摘要:
A method, system and apparatus are provided for dynamically pre-positioning content from servers located in a network, which may be a content distribution network. The content is pre-positioned on a proxy server, and the pre-positioning is triggered by at least one of the scheduling of an event and the presence of a user. Users commuting between different locations of a company can quickly and easily access the pre-positioned content. This content may be prioritized and pre-positioned, based on a user requiring a specific content at a particular time.