Abstract: Method and apparatus for removing radon decay products wherein a fan directs air through a conductive cylinder that is grounded. Positioned axially within the cylinder is one or more cylindrical brushes, each having a shaft and radially extending conductive bristles with distal ends spaced from the cylinder. The shaft is connected to the fan so that the bristles rotate. Also, a static electric potential is applied to the bristles. The relative motion of the air and bristles is particularly effective at enhancing molecular diffusion to cause small unattached radon decay products to plate out on the bristles. In contrast, the electrostatic charging of the bristles and the resulting diffusion charging is particularly effective at exerting a force on larger particles to which radon decay products are attached thus causing the particles to migrate and plate out on the cylinder.
Abstract: A method of treating gas includes the steps of (1) mixing pressurized air and treatment liquid and thereby generating treatment foam and (2) venting the gas through the treatment foam. Preferably, the liquid is liquid deodorant for deodorizing gas from a waste water treatment system. The treatment system is efficient, economical, uncomplicated and easy to install and operate.
Abstract: A surgical laser smoke evacuation system includes a sensor positioned at the surgical site to determine the need for evacuation. A vacuum pump draws smoke from the site through a system of conduits, including an in line filter. The filter tends to become clogged over time. A sensor determines changes in the pressure drop across the filter, and is connected to a control mechanism which adjusts the speed of the vacuum pump to maintain an approximately constant flow across the filter.
Abstract: Particulate material is separated from high temperature gas using a number of elongated porous walled tubular filter elements. The dirty sides of the filter elements are operatively connected to a dirty gas inlet to an upright vessel, while the clean side of the filter element is in operative association with a clean gas outlet. A separated particle outlet extends from the bottom of the vessel. Cleaning of the filter elements takes place by a pulse of high pressure cleansing gas which is supplied to the clean side of the filters. In order to prevent thermal shock or mechanical damage to the filters, especially since the cleansing gas is of a lower temperature than the gas being filtered, the volume of cleansing gas is positively controlled. This is accomplished by placing a restrictor (e.g. orifice or nozzle) between the high pressure source of cleansing gas and a reservoir having a volume sufficient to effect cleansing, but insufficient to cause thermal shock.
Abstract: An apparatus for molding a cap (16) including a base portion (18) and peripheral skirt (20) extending axially from and about the base portion (18) includes an outer surface forming mold (44) for forming an outer surface of the base portion (18) and the peripheral skirt (20) and an inner surface forming mold (46) seatable within the outer surface forming mold (44) for forming an inner surface of the base portion (18) and the peripheral skirt (20). The outer surface forming mold (44) is retractable from seated engagement with inner surface forming mold (46) for exposing the moded cap (16) therebetween. The inner surface forming mold (46) includes a core portion (52) and lug forming mold portions (54) disposed radially peripherally thereabout, the lug forming mold portions (54) being able to project axially from and retract radially inwardly relative to the central core portions (52) for releasing and ejecting the molded cap (16)from the inner surface forming mold ( 46).
Abstract: A method for forming a mold for encapsulating glass sheets with a gasket which includes the steps of positioning a rigid member 18 having a finishing surface 19 and a seal 30 adjacent a model 2, forming a first mold section 10 about the rigid member 18, the seal 30, and the model 2 and adjacent the first side of the model 2, forming a second mold section 12 adjacent a second side of the model 2, and then separating the first mold section 10 and the second mold section 12 and removing the model 2. In one embodiment of the invention, the rigid member 18 is prepared by forming an initial member 24 corresponding at least in part to the shape of the model 2, using the initial member 24 to prepare a cast, casting the rigid member 18 in the cast, and then preparing a finishing surface 19 of the rigid member 18.
Abstract: An exhaust gas filter, such as a soot filter for a diesel engine, is provided with a filter body disposed in a housing. The exhaust gases flow through the filter body to be cleaned. The filter also has an inlet duct and an outlet duct. Between the inlet duct and the outlet duct, there is disposed one or several lateral lines for passing gases along the outside of the filter body. Both ends of the lateral lines are connected via apertures to the inlet duct and the outlet duct, respectively. The cross sections of the inlet duct, outlet duct and the lateral lines are selected so that in the unloaded condition of the filter body a return flow in the lateral lines is produced, while a bypass flow is produced when a preselected loading condition of the filter body is reached.
Abstract: A purification method and device for purifying industrial liquid such as oil from contaminates including first container housing for receiving the industrial liquid in bulk and separating liquid and particulate contaminates therefrom by reversing a flow direction of the received liquid. The thus processed liquid is transferred to a second container and is subjected to a further filtration by forcing the liquid under high pressure through at least one filter element accommodated in the second container. The high pressure on the at least one filter element results in a compression of the at least one filter element thereby precluding the liquid being processed from bypassing the filter element. A further filter barrier seal element may be provided above the at least one filter element and serves as a final filtration prior to a discharge of the liquid from the second container.
Abstract: A collection device (10) for gaseous emissions which comprises a collector body (20) having a hollow interior (33) and an inner wall (22) shaped to conform to a portion of the outer periphery of the open top (14) of a material supply container (12). The inner wall is formed with a number of inlet openings (40, 42) communicating with the collector body interior which are spaced from one another in a direction from one end of the collector body to the other. A deflector member or strake (46) is mounted to the inner wall of the collector body in the areas between adjacent inlet openings therein, and lips are mounted at the top (34) and bottom (35) of the collector body which extends outwardly therefrom substantially perpendicular to the inner wall of the collector body.
August 19, 1991
Date of Patent:
August 24, 1993
Gregory J. Gabryszewski, William S. Blair, Jr.
Abstract: A rotary filter cleaning arrangement (10) for air ducts (100) having a generally rectangular cross-sectional configuration; wherein, the arrangement includes a generally circular filter member (40) mounted for rotary movement on the output shaft (21) of a drive motor (20) suspended from a framework member (30) having a central aperture (32); wherein, the filter member (40) is suspended over the central aperture (32) and cleaned by a radially disposed vacuum arm member (50).
Abstract: The invention relates to an air circulation and filtration system for use with an indoor ice-skating arena. The air circulation and filtration system consists of intake and return air panels which replace and simulate in substantially all respects the boundary "boards" commonly used in indoor ice-skating facilities. The circulation and filtration system remains designed to remove undesirable gases such as carbon monoxide, carbon dioxide, nitrogen dioxide, and exhaust gases emanating from ice resurfacing machinery, from the ice-skating areas used by skaters. The return air panels contain a plurality of angularly offset air passage apertures which direct an air circulation course within an indoor ice-skating arena. The angularly offset air passage apertures promote a circular air course proximal to the ice-skating surface. The location of the intake air panels also promotes a circular air flow course.
Abstract: A device for a variable-flow ventilation system has a filter (10) associa with a ventilation air intake and a shutter element (12) made of an impermeable material, designed to be applied against filter (10) to cover it wholly or partially. The shutter is associated with a mechanism for controlling shutter movement which is connected to a computer (18) which receives information constituted by the pressure value or flow value at the outlet from the fan housing (2). Depending on the information supplied to the computer, the computer acts to hold the pressure at a constant value by affecting the position of the shutter relative to the filter and/or causing the filter to advance.
December 19, 1991
Date of Patent:
August 10, 1993
Societe d'Etude et de Recherche en Ventilation et Aeraulique Serva, ZA
Pierre C. J. Jardinier, Jacques Simonnot
Abstract: A negative pressure installation for treating charged fluids, comprising at least one pipe (2) conveying said charged fluids, a tank (4) for holding the solid and liquid matter, a conduit (5) for evacuation of the gases from the tank (4) to a purifier (6) connected on the one hand to the exterior air by a tube (7) and on the other hand to the pipe (2) by a recycling pipe (10).Application in sanitary installations of aircraft.
Abstract: The coupling means of the assembly comprise machine-side coupling parts, which are movable by means of hydraulic cylinders into coupling engagement with the mold-side coupling parts secured to the sections of the injection mold. As a result, the movable mold section is provided with a coupling for connecting the mold to supply lines for a performance of auxiliary operations in both mold sections and the stationary mold section is provided with a coupling for conducting a fluid for the temperature control of both mold sections. Because the coupling for the temperature control and the coupling for any auxiliary operations to be performed in the injection mold are separated from each other, the expenditure involved in the coupling equipment can be adapted to the current requirements of a potential buyer and nevertheless it is possible to effect a temperature control of the injection mold also when it is outside the clamping region of the injection molding machine.
Abstract: A method and apparatus for substantially eliminating slug flow and for separating the liquid phase of a liquid/gas mixture from the gas phase thereof is provided. A deceleration table contained within a housing decelerates liquid slugs and causes entrained gas to separate therefrom. The decelerated liquid passes through orifices in the deceleration table and is subsequently discharged from the housing while the separated gas rises above the deceleration table and is separately discharged from the housing. The liquid and gas phases can be recombined or permanently separated.
August 24, 1992
Date of Patent:
August 3, 1993
Ohio University, University of Illinois
Abstract: A final filter is provided for cleaning the cooling air drawn into the motor driven pump of a vacuum cleaner featuring a centrifugal separator. The final filter comprises a large area foam block filter and a sheet filter element received in a filter tray which is slideably received in a filter plenum disposed between the centrifugal separator and the motor/pump combination of the vacuum cleaner. The filter tray is supported horizontally within the filter plenum to define an inlet manifold and an outlet manifold having optimum flow characteristics and a detent is provided for snap locking the slideable filter tray within the filter plenum.
Abstract: A method of manufacturing a filter resistant to high temperatures and mechanical stress, includes forming a fiber secured to a suitable framework wherein a double-sided knitted fabric is knitted from a fiber resistant to high temperatures, e.g. poly(m-phenyleneisopthalamide) fiber, on a knitting machine with two rows of needles, and a reinforcing fiber resistant to high temperatures, e.g. aromatic polyamide fiber is fed on top of the fabric, and on top of this a new double-sided fabric, wherein the reinforcing fiber remains in the channels formed by the transverse loops of the knitted structure, after which a piece of this fiber structure is secured to a suitable frame.
Abstract: A portable vacuum and air filtration unit, comprising: a plurality of separately transportable modules and a means for locking the modules together during use, an air inlet located in one of the modules, a debris screen and a means for receiving debris stopped by the screen located in one of the modules, an electrostatic filter located in one of the modules of some embodiments of the invention, a bag filter assembly located in one of the modules, a HEPA filter assembly located in one of the modules, and a means for drawing a substantial volume of air through the inlet, screen, electrostatic filter, bag filter assembly and HEPA filter assembly.
September 26, 1991
Date of Patent:
July 27, 1993
Terrell F. Travis, David M. Shagott, Gary E. Kruse, Daniel N. Sutherland, Blair L. Harber, Jr.
Abstract: An apparatus for suppying ultrahigh purity gas to a semiconductor manufacturing unit.The apparatus includes ceramic filter which is disposed on at least part of a pipe line connected to the gas introduction inlet of the manufacturing unit and a purging mechanism provided between said filter and said manufacturing unit for purging involved impurity gas to the outside of the system.
Abstract: The present invention relates to an improved clamping mechanism for use in injection molding machines and similar pieces of equipment where it is desired to apply a clamping force to particular components. The clamping mechanism of the present invention employs at least one spaced apart brake plate mounted to one component and a braking unit for engaging the brake plates. The braking unit has at least one pair of brake pad linings surrounding the brake plates and at least one piston-cylinder unit for causing frictional engagement between the respective brake pad linings and the brake plate(s). When the brake pad linings grip the brake plate(s), the braking unit becomes locked to the components to which the brake plate(s) are attached. The clamping mechanism of the present invention may be employed on simple injection molding machines as well as TANDEM.RTM. injection molding machines.