Patents Represented by Attorney, Agent or Law Firm Thomas G. Anderson
  • Patent number: 4339251
    Abstract: A movable winch adapted to be aligned on a guide track above each of the filter bags in a baghouse to secure the bags at a predetermined tension within the baghouse.
    Type: Grant
    Filed: November 5, 1981
    Date of Patent: July 13, 1982
    Assignee: Allis-Chalmers Corporation
    Inventor: Eldridge J. Shumate
  • Patent number: 4339087
    Abstract: A piston and cylinder unit for a gyratory crusher including a cylinder having an upper piston carrying the crusher head and a lower piston dividing the interior of the cylinder into a hydraulic chamber and a gas chamber. The hydraulic chamber is selectively chargeable with hydraulic fluid to adjust the crushing gap between the crusher head and the bowl of the crusher, and the gas chamber is connected in communication with a pressure relief chamber within the lower piston to provide an accummulator within the unit accommodating the momentary displacement of the crusher head by noncrushable materials moving through the crushing gap during crushing operations.
    Type: Grant
    Filed: September 8, 1980
    Date of Patent: July 13, 1982
    Assignee: Allis-Chalmers Corporation
    Inventor: Robert J. Pollak
  • Patent number: 4338105
    Abstract: A bearing assembly for supporting one end of a shaker shaft from which a plurality of filter bags are suspended in a baghouse. The bearing assembly includes a stationary bracket mounted within the gas cleaning chamber of the baghouse, a supporting member having an upwardly extending knife-edge portion generally aligned with the longitudinal axis of the shaft and pivotally connected to the bracket for movement about a horizontal axis extending perpendicular to the axis of the shaft, and a shaft supporting block affixed to the end of the shaft having an inverted V-shaped notch sized to be received on the knife-edge portion to support the shaft in a manner accommodating axial and angular displacement of the shaft with respect to the stationary bracket of the bearing assembly.
    Type: Grant
    Filed: August 5, 1981
    Date of Patent: July 6, 1982
    Assignee: Allis-Chalmers Corporation
    Inventor: Leonard J. O'Dell
  • Patent number: 4332597
    Abstract: An electrode plate arrangement for an electrostatic precipitator including a plurality of essentially identical plate assemblies secured in an opposing fashion to the opposite sides of a grid-like mounting frame extending across the interior of the precipitator. The plate assemblies on the upstream side of the frame include an ionizing zone for the dirty gas stream which feeds into serially aligned collecting zones in the opposing assemblies which in turn feed into a deionizing zone in the plate assemblies on the downstream side of the frame.
    Type: Grant
    Filed: January 2, 1981
    Date of Patent: June 1, 1982
    Assignee: Allis-Chalmers Corporation
    Inventor: James E. Wooldridge
  • Patent number: 4326866
    Abstract: A filter apparatus includes a filter housing having a gas treating enclosure portion and a hopper portion disposed below and open to the gas treating enclosure portion. The gas treating enclosure portion encloses a plurality of spaced apart filter cells which are to be filled with granulated gas treating material. The filter cells have open bottoms open to the hopper portion. A gas treating material conveying channel is disposed within and extends across the hopper portion of the housing proximate the bottom thereof. The interior of the channel is open to the interior of the hopper portion only intermittently along the longitudinal sides of the channel. Further, a conveying gas inlet aperture is formed through one wall of the hopper portion opening into the channel at one of its ends, and a gas treating material and conveying gas outlet aperture is formed through the opposite wall of the hopper portion opening into the channel at the other of its ends.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: April 27, 1982
    Assignee: American Air Filter Company, Inc.
    Inventor: Alan Revell
  • Patent number: 4325714
    Abstract: A mounting arrangement for securing electrode plate assemblies in an electrostatic precipitator. The arrangement includes an adjustable, grid-like mounting frame adapted to be secured across the interior of the precipitator housing and a pin and slot attachment arrangement for releasably securing each of the plate assemblies to the frame.
    Type: Grant
    Filed: January 2, 1981
    Date of Patent: April 20, 1982
    Assignee: Allis-Chalmers Corporation
    Inventor: James E. Wooldridge
  • Patent number: 4325718
    Abstract: A pocket filter cartridge having a plurality of side-by-side filter bags secured to a filter header assembly adapted to be secured across a dirty gas stream in a gas duct. The header assembly includes a generally rectangular frame in which the filter bags are secured by collars mounted in the mouths of each of the bags which are held together by clip members to clamp the bags between the collars and the frame to secure the bags to the header assembly.
    Type: Grant
    Filed: May 4, 1981
    Date of Patent: April 20, 1982
    Assignee: Allis-Chalmers Corporation
    Inventor: Robert B. Burkhead
  • Patent number: 4312648
    Abstract: A pocket filter cartridge having a plurality of side-by-side filter assemblies secured to a common mounting frame adapted to be secured across a dirty gas stream in a gas duct. Each of the filter assemblies includes a sheath-like filter bag suspended from an apertured header plate which is secured to the mounting frame in an overlapping fashion with its adjacent mounting plates to form a common header for all of the filters in the cartridge.
    Type: Grant
    Filed: December 8, 1980
    Date of Patent: January 26, 1982
    Assignee: American Air Filter Company, Inc.
    Inventor: Charles E. Day
  • Patent number: 4309978
    Abstract: A forced air heater for heating a venting air stream including an outer casing, a fan for forcing the venting air stream through the casing, a combustion drum providing a combustion chamber for a burner supported within the casing, a flue gas header spaced downstream from the drum connected in separate fluid communication with the combustion chamber to accommodate evacuation of combustion gases from the chamber through the header, a passage for the venting air stream extending through the casing in heat transfer relation with the drum and header, and a plurality of vanes secured within the casing adapted to circulate a predetermined portion of the venting air stream between said drum and header.
    Type: Grant
    Filed: May 16, 1980
    Date of Patent: January 12, 1982
    Assignee: American Air Filter Company, Inc.
    Inventors: Charles R. Hensiek, Paul A. Mutchler, Rayford W. Timms
  • Patent number: 4308887
    Abstract: A gas damper for regulating the mass flow of a stream of purging air as it is directed into an electrostatic precipitator including a generally cylindrical housing having a floating piston positioned in metering relationship to the discharge outlet of the housing by the buoyant force of the air flowing through the housing.
    Type: Grant
    Filed: September 26, 1980
    Date of Patent: January 5, 1982
    Assignee: American Air Filter Company, Inc.
    Inventor: Joseph R. van Bogaert
  • Patent number: 4306896
    Abstract: A filter anchoring arrangement for securing the dependent ends of a row of filter bags suspended from a common filter supporting plate in a bag house. The anchoring arrangement includes a gathering member and a retaining member cooperating with the gathering member to align and retain a docking pin projecting from the dependent end of each bag upon rotation of the gathering and retaining members into a bag-anchoring position.
    Type: Grant
    Filed: November 3, 1980
    Date of Patent: December 22, 1981
    Assignee: American Air Filter Company, Inc.
    Inventor: Leonard J. O'Dell
  • Patent number: 4305740
    Abstract: A filter material charging apparatus for adding a gas treating material into gas treating cells contained in a filter housing includes an open bottomed gas treating material conveying channel and air evacuation conduits located in the filter housing over the gas treating cells. Air-borne filter material is delivered to the conveying channel from a source outside the filter housing. Baffles are located in the channel to distribute gas treating material over the length and breadth of the filter housing, and into the gas treating cells as the gas treating material exits the channel through its open bottom. The air which carried the filter material into the housing is evacuated from the interior of the filter housing by the air evacuating conduit.
    Type: Grant
    Filed: July 25, 1977
    Date of Patent: December 15, 1981
    Assignee: American Air Filter Company, Inc.
    Inventor: Alan Revell
  • Patent number: 4300927
    Abstract: A pocket filter cartridge including at least one sheath-like filter bag which is suspended from a mounting sleeve affixed to an apertured header plate disposed across a dirty gas stream by a retaining collar holding it in press-fit clamping relation to the mounting member.
    Type: Grant
    Filed: October 31, 1980
    Date of Patent: November 17, 1981
    Assignee: American Air Filter Company, Inc.
    Inventor: Charles E. Day
  • Patent number: 4280595
    Abstract: A hand brake for a wheeled vehicle comprises an operating shaft carried within a sleeve affixed to the frame of the vehicle to accommodate axial displacement and rotation of the shaft attendant to shifting the brake between respective braking and non-braking positions. A locking lug on the shaft is adapted to engage and secure a receiving member mounted on one of the vehicle wheels upon rotational and axial movement of the shaft into the braking position, and stops on the shaft cooperative with the sleeve to releasably secure the shaft in the respective braking and non-braking positions.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: July 28, 1981
    Assignee: American Air Filter Company, Inc.
    Inventors: Rayford W. Timms, Raymond C. Waidmann
  • Patent number: 4276069
    Abstract: A filter bag support member for fastening a filter bag to an apertured bag header plate member disposed between the dirty gas inlet and the clean gas outlet of a filter bag housing comprising a flow-through venturi-like tube having one end releasably fastened to the plate member and a clamp at the other end receiving the filter bag in supporting sealed relation.
    Type: Grant
    Filed: September 12, 1979
    Date of Patent: June 30, 1981
    Assignee: American Air Filter Company, Inc.
    Inventor: David L. Miller
  • Patent number: 4272267
    Abstract: A gas filter comprising a square frame and an interchangeable filter package containing a filter web of a folded zig-zag configuration forming a plurality of proximate filter pockets received on a support grid mounted on the frame and having a shape complementary to the folds of the filter web.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: June 9, 1981
    Assignee: American Air Filter Company, Inc.
    Inventors: Grietinus R. L. Kamps, Jan S. P. Moltzer, Pieter J. Platteeuw
  • Patent number: 4272262
    Abstract: A filtering device for removing particulate matter from a gas stream includes a housing with its interior divided by a horizontal partition into an upper plenum chamber and a lower plenum chamber. Planar panel filters arranged in V-shaped banks are suspended from the horizontal partition in the lower plenum chamber. These banks of panel filters coact with the horizontal partition to form a cleaned gas compartment. The housing also has a dirty gas stream inlet to the lower plenum chamber and a clean gas outlet from the upper plenum chamber. A first venturi is located at the horizontal partition and provides a passage for a gas between the cleaned gas compartment and upper plenum chamber, and a second smaller converging nozzle located in the upper plenum chamber coaxially aligned with and spaced from the first venturi. A high energy cleaning gas emitting nozzle is spaced above the second venturi and aligned to direct a jet of high energy cleaning gas axially into the second converging nozzle.
    Type: Grant
    Filed: September 27, 1979
    Date of Patent: June 9, 1981
    Assignee: American Air Filter Company, Inc.
    Inventors: Monroe Britt, Karl L. Westlin
  • Patent number: 4272263
    Abstract: A filter arrangement including a venturi element carried within a tubular filter by a flexible attachment ring at one end of the filter removably securing the filter in the aperture of an apertured plate member in a gas filtration system. The outermost diameter of the venturi element is slightly less than the diameter of the aperture to accommodate withdrawal of the venturi element from either side of the plate attendant to installation and removal of the filter arrangement.
    Type: Grant
    Filed: May 21, 1979
    Date of Patent: June 9, 1981
    Assignee: American Air Filter Company, Inc.
    Inventor: Terence M. Hancock
  • Patent number: 4264345
    Abstract: A filter housing having one or more flow-through media support members releasably secured in the housing between the dirty gas inlet and the clean gas outlet to divide the housing into a dirty gas chamber and a clean gas chamber.
    Type: Grant
    Filed: September 12, 1979
    Date of Patent: April 28, 1981
    Assignee: American Air Filter Company, Inc.
    Inventor: David L. Miller
  • Patent number: 4253955
    Abstract: A continuous flow liquids-solids separator for removing particulate solids suspended in gas scrubbing liquids used in industrial stack gas scrubbing systems. The separator includes a solids separating tank having a pair of parallel perforated walls and an inlet aligned to direct an entrant flow of the liquid-solids suspension in a direction generally parallel with the perforated walls to promote separation of the suspension such that particulate solids are retained in the tank while the scrubbing liquids flow into a liquids reservoir. The tank is supported within the reservoir and is connected with a bleed discharge line which accomodates continuous evacuation of the retained solids from the tank concurrent with the discharge of scrubbing liquids through an outlet in the liquids reservoir.
    Type: Grant
    Filed: July 25, 1979
    Date of Patent: March 3, 1981
    Assignee: American Air Filter Company, Inc.
    Inventor: Richard L. Kline