Abstract:
A surface dresser for removing contaminants includes a body assembly with a stationary seat and an adjustable assembly with a dressing wheel. The adjustable assembly is rotatably mounted on an outer periphery of the stationary seat. Two pairs of pin holes are defined in the stationary seat, and a flexible pin with two short ends is movably mounted in each pair of pin holes. A latch is slidably attached on the outer periphery of the stationary seat and has two clamping holes and two detents corresponding to two adjacent pin holes. When the adjustable assembly is rotated relative to the body assembly by a specific angle, the flexible pins selectively engage the clamping holes and the detents in the latch to lock the adjustable assembly. Consequently, the angle of the dressing wheel is adjustable to accommodate various requirements.
Abstract:
An improved brake structure of a tape measure mainly includes a pair of corresponding slide slots which are set at the inner side of one side of the upper housing and the lower housing of a tape measure, a pair of lodging troughs extended from the end portion, which are near the outlet of the tape, of the sliding slots, a pair of slide ways at both sides of the control part combined in slide slots to slide in the slide slots, a slide piece extended from the front end portion of the control part, a pair of lodging blocks extended from both sides of the center of the slide piece, and an inset hole set at the front end of the slide piece. The lodging blocks are hold to the upper edge of the lodging troughs. Below the slide slots of the enclosure, a position pair of columns is set at one side to be combined with a brake part. A guide piece of the brake part is inset into the inset hole at the front end of the slide piece. When the control part moves downward, the slide piece also moves downward to make the lodging blocks of the slide piece clipped into the lodging troughs of the enclosure and drive the brake part to turn in a certain angle such that the brake part holds to the surface of the tape to achieve the purpose of braking the tape.
Abstract:
A method for the removal of embedded contamination from a metallic surface in which a laser beam is directed on to the contaminated surface. The laser beam has sufficient power density to cause direct ejection of laser-generated melt pool liquid from the metallic surface thereby removing a metallic surface layer containing the embedded contamination. Means are provided for the collection of laser ejected material in order to prevent recontamination of the metallic surface or contamination of previously uncontaminated surfaces.
Abstract:
Disclosed is a tape measure housing with slip resistant pad structure characterized in that it is comprising a tape measure housing and a slip resistant pad. A recesses portion is formed on the housing and both sides of the recessed portion are formed of engaging grooves for fastening the slip resistant pad thereto. A decorative pattern is formed on the surface of the slip resistant pad, while at the both sides of the pad being provided press fit stripes as auxiliary components for assembly. The lower side of the press fit stripe is formed into an inversely stretched claw so as to deeply stretch into the engaging groove and firmly hook on the inner wall of the groove. To secure closely matching the appearance of the housing, the slip resistant pad is made into an arc or other desirable shapes.
Abstract:
A compound of the formula: ##STR1## is disclosed as a retroviral protease inhibitor compound. Also disclosed are methods and compositions for inhibiting an HIV infection.
Abstract:
A method and apparatus for treating toxic waste by the vitrification thereof are described, the method comprising the steps of providing said waste in the form of relatively small pieces; optionally adding vitrifiable material to said waste; bringing a high intensity light source to bear on said waste and said optional vitrifiable material; said high intensity light source being of sufficient power to cause melting and subsequent vitrification of said waste; and, cooling and storing said vitrified material.
Abstract:
A method for the determination of the surface properties of an object which comprises irradiating the surface of interest with an incident beam of radiation from an optical source, detecting by a detector radiation from the beam scattered by the surface, the detector being located at a predetermined position relative to the surface and the optical source and digitizing and analyzing the image detected by the detector, wherein the incident beam has in cross-section a two dimensional envelope and within the envelope an intensity structure which has multiple edges running in more than one direction which provide information about components of the structure of the beam and the analysis of the image is a two dimensional analysis of the intensity shape and structure of the scattered radiation to provide information about the manner in which the incident beam intensity shape and structure has been changed by scattering at the surface of the object.
Abstract:
In a method of treating a surface 12 of an object 10 contaminated with radionuclides 14, a laser source 16 is directed at the surface 12 to apply a local area 18 of intense heat to the surface 12. The laser source 16 is arranged to pass in a raster manner to cause local melting of the surface 12, surface 12 subsequently solidifying and fixing the radionuclides 14 therein. At least one layer of a coating material be applied before or after the application of the intense heat to fix and seal the radionuclides on or in the object.
Abstract:
A programmable control and operation system is applied in a swing pressure adsorption process. The system comprises a computer, a driving device, and a plurality of programmable control valve assemblies. The programmable control valve assembly comprises an operating valve with at least one cavity for sealing control, a valve core, a sealing ring, an operation device, a sealing control valve, and a valve position detector. The operation of the sealing control valve is dependent on the open or closed position of the valve and the process of opening and closing the valve. The sealing control valve feeds a sealing control medium at a pressure to the cavity for sealing the operating valve. The sealing control medium acts on the sealing ring to increase the pressure at the valve core to seal the operating valve. The control and operation system provide independent control of the sealing valve and operating valve to increase reliability and durability.