Patents Examined by Bernard Nozick
  • Patent number: 5192348
    Abstract: A clean room diffuser panel for positioning below a ceiling grid mounted filter element. The diffuser panel is perforated throughout its area with increased size and density of perforations in a peripheral region to provide increased airflow beneath the ceiling grid. The peripheral regions are further angled or provided with directional vanes to create a lateral airflow beneath the ceiling grid.
    Type: Grant
    Filed: August 21, 1991
    Date of Patent: March 9, 1993
    Assignee: Brod & McClung-Pace Co.
    Inventor: Craig S. Ludwig
  • Patent number: 5190772
    Abstract: Device to change dies which is suitable for dies employed for the extrusion of dough as alimentary paste, generally called "pasta", whether long pasta in strings, pasta in strips or sheets, bird's nest-type pasta, etc., the device including a fresh die (12) and a used die (11) and having a central lengthwise axis (23) defining in a plane orthogonal to that axis (23) the first and third quarters of a circle, in which quarters the dies (11-12) are positioned within specific spaces (14-15 ), such spaces (14-15) being defined by an outer frame (19) and an inner frame (21), at least one of these frames (19-21) being able to move laterally so as to clamp or free the dies (11-12), the device being able to rotate about the central axis (23).
    Type: Grant
    Filed: March 11, 1992
    Date of Patent: March 2, 1993
    Assignee: Pavan Mapimpianti S.p.A.
    Inventors: Pierluigi Conselvan, Attilio Cecchin
  • Patent number: 5190569
    Abstract: An air purification apparatus for pneumatic systems utilizing a water trap, a precooler, and a three-stage purification apparatus having filtration means, an air cooling chamber for moisture condensation, and a plurality of moisture traps, all in a compact, efficient package. The purification apparatus automatically purges collected moisture in response to the compressor duty cycle.
    Type: Grant
    Filed: June 13, 1991
    Date of Patent: March 2, 1993
    Inventor: Wayne D. McGrath
  • Patent number: 5188646
    Abstract: An adjustable air filter for use in heating, ventilating, cooling, and forced air systems. The air filter includes a media for filtering air and adapted to be cut with scissors, and a frame embracing the peripheral edges of the media. The frame includes a pair of male sections and a pair of female sections respectively telescopingly receiving the male sections. Also, the frame is adapted to be cut with scissors and is preferably formed of polyvinyl chloride. Each of the male sections includes a T-shaped projection and each of the female sections includes a complementary shaped T-shaped slot adapted to telescopingly receive the T-shaped projection for preventing inward separation of the sections from one another. In the preferred form the media is of the electrostatic type and includes at least one layer of polypropylene woven in an egg-crate pattern. Also, the layer preferably includes a pad of washable polyester material.
    Type: Grant
    Filed: March 5, 1992
    Date of Patent: February 23, 1993
    Assignee: Air Kontrol, Inc.
    Inventor: Edward F. Nolen, Jr.
  • Patent number: 5186825
    Abstract: A fluid filter including a housing defining a fluid inlet and a fluid outlet and a filter element defining an upstream surface communicating with the fluid inlet and a downstream surface communicating with the fluid outlet, the filter element including at least one group of disk-like elements including at least one element of relatively fine porous material, having disposed on both sides thereof disk elements of a relatively coarse porous material, each of the at least one groups having disposed on both sides thereof a grooved spacer element.
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: February 16, 1993
    Inventor: Mordeki Drori
  • Patent number: 5185019
    Abstract: A filter tube assembly for a ceramic filter tube consisting of an annular elongated section from which a head extends. The head has a section whose outer surface is in the shape of a segment of a sphere which tapers out from the elongated section and merges into a cylindrical section. The assembly includes a stainless steel housing internally shaped to accommodate the head. Gaskets are interposed between the housing and the head which are structured cooperatively with the head to preclude dislodgement of the tube from the housing, to take up effectively the differential in thermal expansion between the tube and the housing, to prevent eccentric loading of the tube, to prevent the penetration of particulate into the housing and to seal asperities in teh surface of the tube.
    Type: Grant
    Filed: April 9, 1992
    Date of Patent: February 9, 1993
    Assignee: Westinghouse Electric Corp.
    Inventors: Gaurang B. Haldipur, William J. Dilmore
  • Patent number: 5185016
    Abstract: A waste gas scrubber utilizing a liquid body within an enclosure. The enclosure forms a chamber to confine the body of liquid to a portion of the chamber. A rotatable member includes an inside and an peripheral portion and possesses a multiplicity of passages extending from the inside portion to the peripheral portion. A stator surrounds the rotatable member and forms a channel between itself and the stator. The stator includes the first opening communicating with the body of liquid, permitting liquid to pass to the peripheral portion of the rotatable member, and into the channel between the stator and the peripheral portion of the rotatable member. The stator includes a second opening to the liquid body in the chamber. Waste gases traveling through the rotatable member are purified by turbulent contact with liquid forced into the channel. The purified gases are then led from the chamber to the outside environment.
    Type: Grant
    Filed: October 16, 1991
    Date of Patent: February 9, 1993
    Assignee: Ecoloteck, Inc.
    Inventor: William J. Carr
  • Patent number: 5183481
    Abstract: A supersonic gas flow is employed with a virtual impactor to separate fine particles completely from the gas. The carrying gas and fine particles are accelerated to supersonic speeds and then impacted against a virtual impactor. When the supersonic stream strikes the virtual impactor, a shock wave forms in the gas stream near the impactor surface. The carrying gas turns sharply away while the particles in the gas stream, carried by their inertia, continue in their original direction and pass into the virtual impactor. On the downstream side of the virtual impactor surface, a non-contaminating inert gas maintains a pressure equal to or greater than the pressure of the carrying gas between the virtual impactor surface and the shock wave.
    Type: Grant
    Filed: June 7, 1991
    Date of Patent: February 2, 1993
    Assignee: Aerochem Research Laboratories, Inc.
    Inventor: William Felder
  • Patent number: 5183484
    Abstract: An improved process for recovery of CO.sub.2 gas in a raw material mixed gas by a PSA apparatus. The process is characterized in that the removal of water in the raw material mixed gas is carried out by cooling the raw material mixed gas and passing it through a rotary dehumidification apparatus to remove water in the raw material mixed gas, and the regeneration of the rotary dehumidification apparatus is carried out by using as a gas for regeneration unadsorbed gas discharged from an adsorption step in the PSA apparatus with heating.
    Type: Grant
    Filed: October 28, 1991
    Date of Patent: February 2, 1993
    Assignee: Sumitomo Seika Chemicals Co., Ltd.
    Inventors: Akira Yamaguchi, Masaru Uno, Norio Sekikawa, Fumio Arai, Kenji Matsuzaki
  • Patent number: 5183486
    Abstract: Methods and apparatus for effective vacuum degassing of a liquid are provided for liquid chromatography. The bottles with the liquid are mounted above the vacuum degassing unit to provide a head pressure to the LC pump and physical stability to the bottles. The liquid is heated in the vacuum chamber by a radiator of electromagnetic energy (in one embodiment, infra-red light). Alternatively the liquid is heated before it enters the vacuum chamber. The liquid is in an agitated state in the vacuum chamber. In one variation, the liquid is conducted through the vacuum chamber through tubes wound around bobbins so as to expose a greater portion of the surface area of the tubes to vacuum. Circuitry stops the vacuum pump for a duration of a chromatographic run. The circuitry controls the LC pump and the vacuum pump so as to optimize the chromatographic conditions in the liquid chromatography analytical system.
    Type: Grant
    Filed: December 4, 1990
    Date of Patent: February 2, 1993
    Assignee: Spectra-Physics, Inc.
    Inventors: Ronald A. Gatten, Leslie A. Miller, Thomas J. McCall, Jr., Vance J. Nau
  • Patent number: 5181945
    Abstract: An efficient, highly porous fabric filter medium capable of filtering air at temperatures up to about 500.degree. F. (260.degree. C.) has been provided. The filter medium is made from a polyimide fiber and is especially well suited for use in combination with a rotating drum filtering machine, thereby providing high temperature air filtration at a lower initial equipment and installation cost, and with subsequent lower operating and maintenance costs than have been previously possible.
    Type: Grant
    Filed: June 10, 1991
    Date of Patent: January 26, 1993
    Assignee: Continental Conveyor & Equipment Co.
    Inventor: Paul W. Bodovsky
  • Patent number: 5181943
    Abstract: Disclosed are a process and apparatus for separating liquid ash from an exhaust gas which is formed by the combustion of carbonaceous fuels. The exhaust gas is at a temperature of from 1200.degree. to 1800.degree. C. and under a pressure from 1 to 100 bars and has an ash content, consisting of liquid particles, of 0.1 to 60 g/sm.sup.3. In the process, the ash-containing exhaust gas leaving the combustion chamber is directed to a housing in which there is at least one baffle surface oriented substantially transversely to the direction of flow of the exhaust gas which may be preceded by a centrifugal separator and/or succeeded by a ceramic filter element.
    Type: Grant
    Filed: March 7, 1990
    Date of Patent: January 26, 1993
    Assignee: Metallgesellschaft Aktiengesellschaft
    Inventor: Ekkehard Weber
  • Patent number: 5180408
    Abstract: Device for the catalytic detoxification of or soot removal from exhaust gases of internal combustion engines, comprising: a housing (4) which has two partial shells (4a, 4b) welded together along longitudinal welded edge pairs (26) and two open end zones (8) connected to an exhaust gas line, as well as a flow passage for the exhaust gas between the end zones. Two exhaust gas treatment bodies (6) are provided through which gas is able to flow. The exhaust gas treatment bodies are arranged one behind the other in the flow direction and are arranged at spaced locations from one another in the housing. A protective ring (14) made of sheet metal is provided which delimits the space between the two exhaust gas treatment bodies (6) on the outside. The protective ring (14) has at least one sheet metal flap (32), which extends between a welded edge pair (26) of the housing partial shells (4a, 4b) and is welded to the housing (4) at the welded edge pair.
    Type: Grant
    Filed: December 30, 1991
    Date of Patent: January 19, 1993
    Assignee: J. Eberspacher
    Inventors: Siegfried Worner, Georg Wirth, Peter Zacke
  • Patent number: 5180606
    Abstract: Apparatus for applying a controlled amount of reagent to one or more miscroscope slide or the like includes a spray chamber and a carousel adapted to hold a plurality of slides and to be mounted for rotation in the spray chamber. Nozzles are mounted to spray reagent onto the slides in the carousel as they rotate by the nozzles. Accurate control of the time or angular rotation during which the reagent is sprayed from the nozzles is obtained by placing a control valve in the flow line between a reagent pump and the nozzle and operating the valve to control flow of reagent. Control circuitry determines the position of the slides and carousel in the spray chamber and coordinates operation of the pumps, valves, and rotation of the carousel to accurately cause spray of reagent onto the slides. The slide holding carousel may be replaced by an interchangable centrifuge rotor when it is desired to perform cytocentrifuging tests.
    Type: Grant
    Filed: April 23, 1991
    Date of Patent: January 19, 1993
    Assignee: Wescor, Inc.
    Inventors: Barry O. Stokes, Gary D. Bradshaw, Wayne K. Barlow
  • Patent number: 5180406
    Abstract: An improved exhaust gas muffler for diesel engines comprises a housing of generally oval shaped cross-chamber, a partition plate disposed therein dividing the housing into an upper chamber and a lower chamber, a first and second generally cylindrical filters rotatably secured within respective lower and upper chambers of the housing, an external rotation means such as an electric motor enabling the rotation of the first and second filters, and a quantity of alkaline cleaning fluid partially filling the lower chamber of the housing and partially immersing a lower portion of the first filter. Wherein, exhaust gas enters the lower chamber of the housing through an inlet and passes through an asbestos sleeve of the first filter permeated with cleaning fluid, which removes carbon precipitates from the exhaust gas.
    Type: Grant
    Filed: August 16, 1991
    Date of Patent: January 19, 1993
    Inventor: Chin-Tai Shih
  • Patent number: 5178655
    Abstract: A vacuum cleaning device comprising an enclosure (20) containing a chamber (30) in which is located at least one flexible wall such as a bag (2) designed to stop solid particles while letting through the air, and containing a compartment (40) provided with a movable tray (41) located beneath the chamber (30) in order to catch the solid particles which fall by the force of gravity. The device is characterized in that it includes a means (5) for forming a sealed connection between the flexible wall (2) and the tray (41), the latter comprising at least one inlet (48-49) for air to be filtered. In a preferred embodiment, the flexible wall (2) is secured by frame (3) the edge of which acrries a flexible seal (5) so that the assembly (1) thereby formed is self-contained and interchangeable without needing to be dismantled.
    Type: Grant
    Filed: October 25, 1991
    Date of Patent: January 12, 1993
    Inventor: Gerard Sassier
  • Patent number: 5178648
    Abstract: A method and apparatus are provided for separating particulate material from hot gas. Provisions are made for accommodating relative thermal expansion between a hot particular laden gas chamber, a particulate discharge chamber and a clean gas chamber. A main housing supports an interior subhousing supported from the top of the main housing while a further discharge chamber housing is supported from a lower part of the subhousing in such a manner that they are free to expand and contract independently of one another. Gas and particulate separators which are free from load bearing stresses are designed to receive the particulate laden gas and pass particulates to the particulate discharge chamber for bottom discharge and the gas to the clean gas chamber for discharge at the top of the main housing. Provisions are made for auxiliary discharge of particulates bypassing the separators at a bottom of the clean gas chamber.
    Type: Grant
    Filed: July 10, 1991
    Date of Patent: January 12, 1993
    Assignee: Emtrol Corporation
    Inventors: Bodo Kalen, Nicholas L. Giuricich
  • Patent number: 5178572
    Abstract: An electron gun sealing apparatus comprises a bulb supporting means for supporting a bulb, a first up/down means for raising and lowering an electron gun, which is vertically positioned below the bulb, a heating means arranged around the neck of the bulb to heat the neck and the stem of an electron gun, a second up/down means for raising and lowering the heating means to a certain height in relation to the neck, and a revolving means for rotating the heating means with respect to the electron gun supporter. Since the sealing by the sealing apparatus is performed by rotating the heating means, the bulb is free from centrifugal force, preventing displaced sealing of the neck. Also, thinning and cracking at the seal is prevented by an accurate position control and a sealing flame adjustment. Further, this automatically performed sealing operation simplifies the sealing, reduces labor, and improves productivity.
    Type: Grant
    Filed: October 31, 1991
    Date of Patent: January 12, 1993
    Assignee: Samsung Electron Devices Co., Ltd.
    Inventor: Dae-ok Choi
  • Patent number: 5178652
    Abstract: In a fluidized bed apparatus a process gas flows through a process chamber (46) and subsequently through a filter group, including a total number of at least two filter cartridges (50), while a respective part of the number of filter cartridges (50) is blocked, in rotation, to the gas flow coming from the process chamber (46) and is passed instead in opposite direction by a purging gas. An overall quantity of process gas exceeding the gas demand in the process chamber (46) at the ratio of the partial number mentioned to the total number of filter cartridges (50) is supplied to the apparatus. The exceeding partial amount of process gas is branched off in the apparatus ahead of the process chamber (46), passed as purging gas through the partial number mentioned of filter cartridges (50), and subsequently discharged through the remaining number of filter cartridges (50) together with the residual quantity of process gas coming from the process chamber (46).
    Type: Grant
    Filed: September 12, 1991
    Date of Patent: January 12, 1993
    Inventor: Herbert Huttlin
  • Patent number: 5177335
    Abstract: A prefilter for an EDM machine includes a tank for holding flush water with guide rollers and channels used to thread a continuous sheet of filter paper along the bottom thereof such that the flush water is prefiltered by the continuous sheet filter paper. A float switch detects the level of flush water in the tank so that as the filter paper becomes clogged, it actuates a take-up motor for advancing the filter paper through the tank to remove clogged filter paper therefrom and replace it with fresh filter paper. The prefilter may be used as a kit for retrofit to existing EDM machines or provided as part of an original equipment design.
    Type: Grant
    Filed: January 16, 1990
    Date of Patent: January 5, 1993
    Assignee: Westhoff Machine Company
    Inventors: John D. Hartwig, Roy W. Ritchey, Jr.