58results about How to "Protection level" patented technology

The invention provides an electric switch cabinet with adjustable ground feet and convenient maintenance. The electric switch cabinet comprises an electric switch cabinet body (100), a mounting shell (2) which is fixedly connected to the bottom of the electric switch cabinet body (100), and four ground foot components (7) which have adjustable heights and are installed at the top wall of the mounting shell (2) and are at four vertices of a square, wherein each one of the four ground foot components (7) with the adjustable heights comprises a rotable threaded sleeve (73) which is connected to the mounting shell (2) through upper and lower bearings (738, 739), and a ground foot screw rod (72) which is threadingly matched with the threaded inner hole of the rotable threaded sleeve (73).

Circuits, architectures, a system and methods for protecting against overvoltages in a high-speed differential signal or circuit. The circuit generally includes (a) a differential signal transmission line, (b) a common mode circuit coupled to and configured to reduce a swing of the differential signal transmission line, and (c) an overvoltage protection circuit coupled to the common mode circuit, wherein the common mode circuit is electrically interposed between the overvoltage protection circuit and the differential signal transmission line. The architectures and / or systems generally include an integrated circuit that embodies one or more of the inventive concepts disclosed herein. The method generally includes shunting the overvoltage to a ground potential through the termination circuit when the differential circuit receives the overvoltage, but otherwise processing the differential signal through circuitry coupled to the differential circuit. The present invention advantageously provides a satisfactory level of overvoltage protection for nearly all applications in which conventional CMOS circuitry can be used, while at the same time, having very little, if any, adverse effect on differential data signal transmission speed.

An electrical switch cabinet having adjustable foots and realizing accurate adjustment comprises an electrical switch cabinet body (100), an installation shell (2) fixedly connected with the bottom of the electrical switch cabinet body (100), and four height-adjustable foot assemblies (7) which are installed on the top wall of the installation shell (2) and are respectively at the four vertexes of a square, wherein each of the four height-adjustable foot assemblies (7) includes a rotatable threaded sleeve (73) connected with the installation shell (2) through upper and lower bearings (738, 739), and a foot screw (72) in threaded fit with the threaded inner hole of the rotatable threaded sleeve (73).

The present invention relates to an in vivo equine disease model for equine herpesvirus-1 neurological disease comprising a horse having a low pre-exposure level of herpesvirus-specific CTL precursors and / or is approximately 20 years of age or older wherein the horse is experimentally infected with a neuropathogenic strain of equine herpesvirus or a mutant thereof. The invention includes a method of preparing an in vivo equine disease model for equine herpesvirus-1 neurological disease comprising obtaining a horse that possesses low pre-infection levels of EHV-1 specific CTL precursors and / or is approximately 20 years of age or older and inoculating the horse intranasally with an effective infecting amount of a neuropathogenic strain of EHV-1. A particularly preferred method involves the advanced neurological disease stage when the experimental horse presents clinical signs of myeloencephalopathy. Additionally, the invention concerns a method of quantifying the risk factors and predicting the development of clinical neurologic signs of equine herpesvirus-1 neurological disease in a horse comprising the steps of (a) determining the pre-infection CTLp frequency to be less than approximately 40 EHV-1 specific CTLp per 106 PBMC; and (b) determining the post-infection viremic load following exposure to EHV-1 to be approximately 10-fold or more over the viremic load present in horses following exposure to a non-neuropathogenic strain of EHV-1. Also described in the invention is the determination of the risk of developing the clinical neurologic signs by use of an equation y=a+bx wherein y is the peak viremic load, a=2.97, b=−0.027 and the variable x is the pre-infection CTLp frequency. Lastly, the invention deals with a new live, attenuated vaccine formulation that is effective against neurologic disease due to equine herpesvirus-1.

The invention discloses an efficient civil construction pipeline paving device which includes a front-mounted soil planing device, a self-propelled trolley platform, a soil conveying device and a pipeline traction device. By means of the efficient civil construction pipeline paving device, trench excavation and paving can be simultaneously performed, meanwhile, it can be effectively ensured that apipeline keeps horizontal during long-distance paving, the position of a soil planing wheel can be fixed through a first slide rail, and a first screw can be driven by a fifth motor to rotate to achieve lifting movement of the soil planing wheel; the soil planing wheel rotating at high speed can quickly plane soil, the self-propelled trolley platform can be quickly moved, trench excavation can bequickly carried out through the arrangement of the soil conveying device, and a positioning sleeve can be quickly lifted and adjusted through the arrangement of a first hydraulic telescopic rod; andthe pipeline can be clamped by a first arc-shaped clamping plate and a second arc-shaped clamping plate, and therefore paving operation of the pipeline is facilitated.

An electrical switch cabinet with an adjustable ground foot component, comprising an electrical switch cabinet body (100), a mounting shell (2) fixedly connected to the bottom of the electrical switch cabinet body (100), and a Four height-adjustable foot assemblies (7) on the top wall of the mounting housing (2) and respectively located at the four vertices of the square, wherein the four height-adjustable foot assemblies (7) Each of them includes a rotatable threaded sleeve (73) connected with the mounting housing (2) through two upper and lower bearings (738, 739), and the inner thread of the rotatable threaded sleeve (73) Anchor screw (72) with hole thread fit.