摘要:
A resilient flexible pipe coupling for interconnecting two pipes of different diameters in a pressure tight manner comprises a tubular metal casing formed with a longitudinal gap and a tensioning screw device for reducing the width of the gap to tighten the coupling around the adjacent ends of the two pipes. A sealing sleeve of resilient flexible material is arranged within the casing. The sleeve has radially inwardly projecting sealing lips formed on both of its free end. The sealing lips have different radial thicknesses so as to compensate for the difference in diameters of the pipes.
摘要:
A pipe coupling for connecting together two plain-ended pipes in a fluid-tight manner comprises an outer tubular casing, an inner tubular casing and a tubular sealing sleeve. The sealing sleeve has two sets of inwardly projecting ribs which, in use, are pressed into sealing engagement with the respective ends of the pipes. The inner and outer casings are longitudinally split and tensioning screws on the outer casing can be tightened to tighten the outer casing around the inner casing and the sealing sleeve. Frustoconical slots in the outer surfaces of the sealing sleeves receive frustoconical gripping rings which have gripping teeth on the inner sides which bite into the pipe surfaces to secure the pipes against axial displacement.
摘要:
A resiliently flexible pipe coupling for interconnecting two pipe ends in a pressure-tight manner includes a tubular sealing sleeve of resilient flexible material, and an adjustable tubular metal casing for clamping the sealing sleeve around the pipe ends. The sealing sleeve includes a tubular web portion and sealing lips integral with the web portion. The sealing lips are formed in adjoining relationship relative to the web portion and define free ends of the sealing sleeve. The sealing lips extend radially inwardly from the web portion and are spaced apart longitudinally. Each sealing lip includes a radially inner pipe-engaging surface for engaging one of the pipe ends, and the pipe-engaging surface of one of the lips has a substantially different internal diameter from the pipe-engaging surface of the other lip, whereby the coupling is adapted to connect two pipe ends of different external diameter. The web portion is radially thicker in the region of the lip of smaller internal diameter than in the region of the lip of greater internal diameter. This permits the axially inwardly facing surfaces of the respective lips to have substantially the same surface area.
摘要:
An omnidirectional quad-loop antenna has four open circular wire loops, each being the same length as the wavelength of a Wi-Fi signal. The loops are joined at their tops and each lies in a distinct plane that is rotated 45 degrees with respect to each adjoining wire loop. The bottom terminal ends of the loops are configured to connect to the outer conductor of a coaxial cable. A helical wire coil may be connected at one end to the loops at the connection point, or insulated from the loops, and the other end is configured to connect to the inner conductor of the cable. With the antenna and cable connected to a router, the Wi-Fi signal is much stronger, in any direction, than without. The compact antenna fits within the volume of a sphere with a circumference corresponding to the wavelength.
摘要:
A grocery inventory tracking assembly includes a scanning unit has a scanner and an electronic memory. The scanner is electrically coupled to the electronic memory. The scanner may scan bar codes on grocery items. The electronic memory may store the bar codes thereby facilitating the electronic memory to track inventory of the grocery items. A mount is provided and the mount may be removably coupled to a support surface. The mount frictionally engages the scanning unit. Thus, the scanning unit may be retained on the support surface.
摘要:
Disclosed is an orthopedic implant and methods of implantation for fixing adjacent bones. In an embodiment, the implant includes a locking mechanism that is adapted to be advanced by a locking instrument, wherein advancement of the locking mechanism in a first direction produces rotation of a first rigid abutment surface from a first orientation to a second orientation, and continued advancement of the locking mechanism produces advancement of the first rigid abutment surface towards a second rigid abutment surface and placement of a compressive load onto and sufficient to immobilize the implant relative to the first bony surface and the second bony surface.
摘要:
For automatically identifying a failure in a logical circuit in a data network without manual intervention, the logical circuit includes one or more logical connections for communicating data in the data network. A network management module periodically requests trap data indicating the status of the logical connections in the logical circuit. After the trap data has been received by the network management module, the trap data is analyzed to determine whether any of the logical connections has failed. If it is determined that a logical connection has failed, the network management module may wait a predetermined time period to determine whether the failed logical connection has been restored. If after the predetermined time period the logical connection has not been restored, then the logical circuit is identified as having failed.
摘要:
A racing wheelchair is disclosed. The racing wheelchair may have a pair of rear wheels and a steerable single front wheel. The rear wheels may be independently driven by a lever, through a derailer and a chain, such that pushing one of the two levers will move one of the wheels but not the other. The front wheel is steerable by twist grips located at the removed end of the levers. Brake assemblies and shifter assemblies of the derailers are located adjacent the twist grip, and may be rigidly mounted to the push lever or mounted to the twist grip to rotate therewith.
摘要:
A skeleton or frame for building an enclosed structure with a load bearing support system for supporting one or more levels of accessories to provide one or more additional levels of load bearing surfaces. The frame comprises at least two side portions comprising a plurality of longitudinally spaced sidewall posts and at least one transverse member connecting the two side frames for mounting various panels (e.g., a roof, floor, wall, door, window, sunroof, refrigerator unit, air conditioner unit, etc.) and accessories (e.g., a shelf, drawer, bin, cabinet, platform, cot, sliding rack, bucket, bench and the like).
摘要:
Methods and systems are provided for automatically renaming logical circuit identifiers for rerouted logical circuits in a data network. A first logical circuit identifier for a first logical circuit in a first network is identified. When a failure is detected in the first logical circuit, a second logical circuit identifier for a second logical circuit in a failover network separate from the first network is identified and the first logical circuit is renamed without manual intervention to identify the first logical circuit using the second logical circuit identifier. The second logical circuit is to reroute data from the first logical circuit.