Elements Patents (Class 209/363)
  • Patent number: 10921799
    Abstract: A system and method designed to track usage across multiple pieces of motor-driven equipment and to analysis the usage data in order to identify which pieces of equipment should be sent for preventative maintenance. For each piece of equipment, the system includes a durable recording device that fits onto a body part of a piece of equipment, such as a portable landscaping tool, and a companion reporting component. The recording device senses parameters as in-use time, but also operational frequency vibration levels of use. The reporting components from various pieces of equipment can be linked to an authorized electronic device, such as a Bluetooth-enabled mobile cell phone, tablet or the like, for the transfer of data from each piece of equipment, with the electronic device analyzing the operational data for preventive maintenance purposes.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: February 16, 2021
    Assignee: Equipbit, Inc.
    Inventor: Thomas Disisto
  • Patent number: 10094183
    Abstract: A system for separating components from a slurry of drilling fluid and drill cuttings on a shaker screen having an upper side and a lower side within a shaker. The system also has a pressure differential generator to pull an effective volume of air through a section of the shaker screen to enhance the flow of drilling fluid through the section of the shaker screen and the separation of drilling fluid from drill cuttings and further maintain an effective flow of drill cuttings off the shaker. A method of separating components of a slurry of drilling fluids and solids has the steps of delivering the slurry to a shaker, flowing the slurry over a first screen and applying an effective amount of vacuum to a first portion of the first screen to remove the drilling fluids from the slurry without stalling the solids on the first screen.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: October 9, 2018
    Assignee: M-I L.L.C.
    Inventor: Brian S. Carr
  • Patent number: 9512687
    Abstract: A system for separating components of a slurry is disclosed, the system including a housing; a basket for holding at least one shaker screen, the basket movably mounted in the housing; at least one vibrator coupled to the basket; a sump disposed below the basket to collect at least a portion of the slurry passing through the at least one shaker screen; a pressure differential device fluidly connected to the sump for developing a pressure differential across the at least one shaker screen; and a toggling device for toggling the pressure differential across the screen. A system including a degassing chamber fluidly connected to a sump and a pressure differential device, wherein the degassing chamber is disposed between the sump and the pressure differential device, and a fluid conduit fluidly connected to the degassing chamber for recovering a degassed fluid is also disclosed.
    Type: Grant
    Filed: December 21, 2013
    Date of Patent: December 6, 2016
    Assignee: M-I L.L.C.
    Inventor: Brian S. Carr
  • Patent number: 8991613
    Abstract: A screen panel with improved apertures for mining and quarrying industries adapted to be mounted on a screen deck, including a screening surface made up of materials such as herein described formed on a reinforcing frame, said screen panel having suitably designed apertures for allowing materials to pass through, said apertures having resilient ribs (5) with protrusions (4) on both sides configured with respect to each other such that adequate open space exists, whereby clogging of materials pursuant to screening operations are substantially reduced.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: March 31, 2015
    Assignee: TEGA Industries Limited
    Inventor: Madan Mohan Mohanka
  • Publication number: 20150021241
    Abstract: A screen support frame comprising, a perimeter disposed in a horizontal plane, defining a vertical direction normal to said plane, said perimeter reinforced by an arrangement of reinforcing wires, said arrangement comprising a first array of substantially parallel structural wires extending between opposing regions of the perimeter in a first horizontal plane, a second array of substantially parallel structural wires extending between opposing regions of the perimeter in a second horizontal plane, said first and second arrays of structural wires being aligned at an angle to each other and in contact with each other thus forming a plurality of contact points between structural wires of the first and second array respectively, the arrangement further comprising at least one additional structural wire, said additional structural wire extending between opposing regions of the perimeter and being positioned parallel to, and substantially vertically spaced from, a wire in the first array of structural wires, and in
    Type: Application
    Filed: February 18, 2013
    Publication date: January 22, 2015
    Inventor: Andrew John Ralph
  • Patent number: 8800779
    Abstract: A screen system having a plurality of screen elements that can be readily removed and replaced to vary one or more characteristics of the screen surface formed by the screen system. The screen system includes a support system for supporting at least one screen element to prevent deformation of the screen element that typically would occur due to the insufficient structural stability of the at least one screen element relative to the weight of the product being screened. Preferably, the support system includes one or more support elements that can be readily and easily installed and removed from the screen system. The support system is preferably configured to permit the one or more support elements to be positioned at different locations in the screen system. Preferably, the support system is configured to permit a variety of different support elements to be used to allow a greater variety of screen elements to be used.
    Type: Grant
    Filed: July 5, 2011
    Date of Patent: August 12, 2014
    Assignee: Lumsden Corporation
    Inventor: Myron Henry Wardell
  • Publication number: 20140138289
    Abstract: A disc screen includes a shaft, a first disc mounted on the shaft, and a second disc mounted on the shaft. An interfacial opening (IFO) extends between the first disc and the second disc. A width of the IFO as measured between the first disc and the second disc varies according to a rotational position of the shaft.
    Type: Application
    Filed: November 21, 2012
    Publication date: May 22, 2014
    Applicant: Bulk Handling Systems
    Inventors: Chris PARR, Maxim Hoffman, Dane Campbell
  • Publication number: 20140061102
    Abstract: A material processing vibrating screen with diverting systems configured to deliver material, via a plurality of material diverters, to locations closer to a feed end of the screen than would otherwise be done in the absence of the diverters. The diverters can be fixed to a cross member, the underside of a screen, and may be adjustable and easily replaceable. The materials for the deflectors can vary depending upon the material being screened. The screen may be also be a variable sloped vibrating screen.
    Type: Application
    Filed: August 27, 2013
    Publication date: March 6, 2014
    Inventor: Edwin J. Sauser
  • Patent number: 8640878
    Abstract: A tilt roller grader for grading solid objects, such as shrimp. The grader has grading rollers obliquely arranged across a tilted grading bed. Jacks in cross members supporting the bed are used to jack up the grading bed across its width to adjust the flatness of the bed for uniform grading gaps between the grading rollers and the bed.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: February 4, 2014
    Assignee: Laitram, L.L.C.
    Inventors: Christopher G. Greve, Robert S. Lapeyre
  • Publication number: 20130284646
    Abstract: A shaker screen comprises a frame that has a plurality of opposing sides. The shaker screen also comprises a screen assembly attached to the frame. In addition, each side of the shaker screen comprises a tubular member having an inner edge, an outer edge, and defining a central axis. Further, a horizontal plane intersects the central axis, the outer edge, and the inner edge of each side.
    Type: Application
    Filed: April 27, 2012
    Publication date: October 31, 2013
    Applicant: KEM-TRON TECHNOLOGIES, INC.
    Inventor: Michael Rai ANDERSON
  • Patent number: 8517179
    Abstract: A vibratory separator including a screen frame and a screen attachment. The screen attachment including at least one vertically disposed latch on the screen frame, at least one vertically disposed catch on the screen frame, and at least one bearing surface proximate the at least one vertically disposed catch. Additionally, a method of securing adjacent screens including inserting a vertically disposed latch of a first screen into a catch of a second screen, wherein the inserting includes contacting the latch of the first screen with a bearing surface of the second screen adjacent the catch of the second screen. The method further includes forming a planar alignment of the first screen to the second screen.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: August 27, 2013
    Assignees: M-I L.L.C., United Wire Limited
    Inventors: Graham Robertson, Brian S. Carr, Eric Cady, Claire Galloway
  • Publication number: 20130213863
    Abstract: A screen panel with improved apertures for mining and quarrying industries adapted to be mounted on a screen deck, including a screening surface made up of materials such as herein described formed on a reinforcing frame, said screen panel having suitably designed apertures for allowing materials to pass through, said apertures having resilient ribs (5) with protrusions (4) on both sides configured with respect to each other such that adequate open space exists, whereby clogging of materials pursuant to screening operations are substantially reduced.
    Type: Application
    Filed: March 11, 2011
    Publication date: August 22, 2013
    Applicant: TEGA INDUSTRIES LIMITED
    Inventor: Madan Mohan Mohanka
  • Publication number: 20130126397
    Abstract: A screen panel for mining and quarrying industries adapted to be mounted on a screen deck including a wear section (2) and a reinforcement section (1), said wear section (2) comprising a screening surface made up of materials such as herein described formed on said reinforcement section (1) such as herein described, said wear section being the top portion of said panel and said reinforcement section being the bottom portion of said panel, said wear section and said reinforcement section being separate units and said wear section being adapted (4) to be replaceable from time to time, for ensuring smooth functioning of screening operation.
    Type: Application
    Filed: March 11, 2011
    Publication date: May 23, 2013
    Inventor: Arobindo Ghosh
  • Publication number: 20130098811
    Abstract: The present disclosure relates to a material reducing machine including a rotary reducing component positioned at least partially within a reducing chamber. A sizing screen defines a portion of the reducing chamber and extends at least partially around the rotary reducing component. Material catches are disclosed for preventing elongated strips of material from snaking longitudinally through the sizing screen without being adequately reduced in length.
    Type: Application
    Filed: August 21, 2012
    Publication date: April 25, 2013
    Applicant: Vermeer Manufacturing Company
    Inventors: Daniel James Vroom, Duane Harthoorn
  • Publication number: 20120325729
    Abstract: The invention is a screen (1) for separating solid residues, comprising: a plurality of parallel rotary shafts (2) spaced from each other and associated with a supporting structure (3); drive means (4, 4a) of the shafts (2) suited to set them rotating around their longitudinal axis (Y); a plurality of screening discs (8) arranged spaced from each other along the rotary shafts (2) to which they are fixed through connection means (9); a plurality of anti-clogging sleeves (10; 20) coupled externally to the rotary shafts (2) and each included between two corresponding screening discs (8). A stabilizing body (11, 21) is arranged peripherally inside each one of the anti-clogging sleeves (10, 20).
    Type: Application
    Filed: October 13, 2010
    Publication date: December 27, 2012
    Applicant: ECOSTAR S.R.L.
    Inventor: Domenico Cappozzo
  • Publication number: 20120234735
    Abstract: A sieving device including a hollow cylindrical body, a filter disposed at a bottom portion of the hollow cylindrical body, and a blade configured to rotate in close proximity to the filter around a rotation axis thereof crossing the filter to thereby stir powder supplied to the hollow cylindrical body.
    Type: Application
    Filed: March 13, 2012
    Publication date: September 20, 2012
    Applicant: RICOH COMPANY, LTD.
    Inventors: Hideo ICHIKAWA, Kaori Ozeki, Tatsushi Umayahara, Takashi Ono, Masayoshi Suzuki, Teruo Shibata, Keiichi Yano, Masato Suzuki, Eiichi Masushio, Hiroshi Sano, Yusuke Uchida, Junji Yamabe, Seiji Terazawa, Masashi Hasegawa
  • Publication number: 20120205295
    Abstract: The present invention relates to a rotor element for use with a rotor and a rotor featuring such rotor elements. The rotor is used in a screening apparatus of the pulp and paper industry. The rotor element (10) has two longitudinal edges, a leading edge (12) and a trailing edge (14); two opposite ends, a first end and a second end; and a surface (18) arranged between the first edge (12) and the second edge (14). The surface (18) is divided by a borderline (20) into a leading surface (22) having its origin at the first edge (12), and a trailing surface (24) having its origin at the second edge (14). A distance (W1) is provided between the borderline (20) and the first edge (12) that is smaller at the first end of the rotor element (10) than at the second end of the rotor element (10).
    Type: Application
    Filed: April 25, 2012
    Publication date: August 16, 2012
    Applicant: AIKAWA FIBER TECHNOLOGIES TRUST
    Inventor: Cameron PFLUEGER
  • Publication number: 20120125823
    Abstract: A gasket for aligning and sealing a screen in a round separator includes a deformable annular wall having a first lobe at a top end, a second lobe at a bottom end, an exterior surface, and an interior surface from which an upper lip and a lower lip project inward to generally define a U-shaped channel, wherein the deformable annular wall, the upper lip, and the lower lip together have a pi-shaped cross-section.
    Type: Application
    Filed: November 7, 2011
    Publication date: May 24, 2012
    Applicant: M-I L.L.C.
    Inventor: Joseph L. Smith
  • Publication number: 20120103877
    Abstract: A seal can have a middle portion, an upper lip, and a lower lip. The upper lip has a configuration with an upper end portion, an upper top portion, and an upper bottom portion with a void space defined in part by the upper end portion, the upper top portion, and the upper bottom portion. The lower lip can have a configuration with an upper end portion, a lower top portion, and an upper bottom portion with a void space defined in part by the lower end portion, the lower top portion, and the lower bottom portion. A middle portion connects the upper lip and the lower lip.
    Type: Application
    Filed: October 28, 2010
    Publication date: May 3, 2012
    Inventors: Grant Young, Ray Young
  • Publication number: 20110303587
    Abstract: The invention refers to a screen star, in particular for a screen machine, wherein the screen star is configured essentially disc-like and can be arranged on a shaft, wherein referring to the center of the screen star at least two outside-running star fingers are provided. The invention is characterized in that the length of the star fingers differs.
    Type: Application
    Filed: December 3, 2009
    Publication date: December 15, 2011
    Inventors: Johann Doppstadt, Berger Horst
  • Publication number: 20110259799
    Abstract: A cam-based classifier for the treatment of heterogeneous masses of materials comprising a series of rotating elements (15) phase driven around a rotation axis (16) for identifying calibrated passage clearances (17) of a screening plane (14), wherein each of the rotating elements (15) comprises a series of cam elements (20), i.e.
    Type: Application
    Filed: October 30, 2008
    Publication date: October 27, 2011
    Applicant: Globus S.r.I
    Inventor: Fabio Paron
  • Patent number: 8025154
    Abstract: The invention provides a fastener (10) for a screen panel (20), the fastener including a base section (12) at least two outer engagement means (14) extending from opposite side zones of the base section, the two outer engagement means at least partially opposing one another; and at least one inner engagement means (16) located between the outer engagement means; the inner and outer engagement means including retaining formations (14.2, 16.2) adapted to engage a complementary receiving formation in a screen panel (20) in a snap fit configuration.
    Type: Grant
    Filed: November 24, 2006
    Date of Patent: September 27, 2011
    Assignee: Multotec Manufacturing (Pty) Limited
    Inventor: Nigel Peter Kriel
  • Publication number: 20110226676
    Abstract: An integrally-rotating cylindrical sieve 1 includes a hollow rotating shaft 2, which a driveshaft 21 is inserted into and fixed to, support members 3 radially extended from the rotating shaft 2, a cylindrical sieve body 4 made from a thin plate with a large number of apertures 5 formed therein, such as punching metal, and coupled with the support members 3, and sieve frames 6a and 6b attached to axial ends of the sieve body 4. The rotating shaft 2, the support members 3, the sieve body 4, the sieve frames 6a and 6b, and the driveshaft 21 are coaxially rotated together. The sieve body 4 is a cylindrical corrugated plate having wave crests and wave troughs arranged along its circumference and has a large number of apertures 5 formed in the corrugated plate. This arrangement improves the sieving efficiency of the granular material and effectively prevents potential destruction and cracking of the granular material, thus enhancing the commercial value of the sieved granular material.
    Type: Application
    Filed: May 31, 2010
    Publication date: September 22, 2011
    Applicant: TSUKASA CO., LTD.
    Inventor: Yasuhiro Ikeda
  • Publication number: 20110108467
    Abstract: A material separation screen includes multiple shafts mounted on a frame. Multi-diameter disc assemblies are mounted on the shafts and are configured to rotate and separate out different types of materials from a material stream. The multi-diameter disc assemblies include spacer discs that separately interlock together around the shafts. Compound discs are separately attached to the shafts next to the spacer discs. The spacer discs are made from a harder material than the compound discs to reduce spacer disc wear and to reduce the amount of material needed for fabricating the multi-diameter disc assembly.
    Type: Application
    Filed: November 11, 2009
    Publication date: May 12, 2011
    Applicant: Emerging Acquisitions, LLC
    Inventors: Dane Campbell, Chris Parr, Steve Miller
  • Publication number: 20100270215
    Abstract: A vibratory separator including a screen frame and a screen attachment. The screen attachment including at least one vertically disposed latch on the screen frame, at least one vertically disposed catch on the screen frame, and at least one bearing surface proximate the at least one vertically disposed catch. Additionally, a method of securing adjacent screens including inserting a vertically disposed latch of a first screen into a catch of a second screen, wherein the inserting includes contacting the latch of the first screen with a bearing surface of the second screen adjacent the catch of the second screen. The method further includes forming a planar alignment of the first screen to the second screen.
    Type: Application
    Filed: September 30, 2008
    Publication date: October 28, 2010
    Applicants: M-I L.L.C., UNITED WIRE LIMITED
    Inventors: Graham Robertson, Brian S. Carr, Eric Cady, Claire Galloway
  • Patent number: 7819253
    Abstract: A filtering flow box for receiving a supply of plastic pellets from a bottom-unloading tower silo and removing undesirable plastic strands (“angel hair”) from the pellets before they are processed for manufacturing. The box has an angled entry wall for laterally channeling pellets to an angled filter. The pellets pass through the filter and angel hair collects on the filter's upstream surface. The filter can be removed from the box at an angle having a vertical component for cleaning, thus allowing any pellets that have accumulated on top of the filter to fall back into the box.
    Type: Grant
    Filed: April 14, 2008
    Date of Patent: October 26, 2010
    Inventors: Ronald E. Borger, Troy Steinbrunner
  • Publication number: 20100258483
    Abstract: The present invention relates to a rotor element for use with a rotor and a rotor featuring said elements. The rotor is used in a screening apparatus of the pulp and paper industry. The rotor element (10) has two longitudinal edges, a first, so-called leading edge (12) and a second, so-called trailing edge (14); two opposite ends, a first end and a second end; and a surface (18) arranged between said first edge (12) and said second edge (14), said surface (18) being divided by means of a borderline (20) into a first, so called leading surface (22) having its origin at said first edge (12), and a second, so called trailing surface (24) having its origin at said second edge (14), where a distance (W1) between said borderline (20) and said first edge (12) is smaller at said first end of said rotor element (10) than at the second end of said rotor element (10).
    Type: Application
    Filed: March 28, 2008
    Publication date: October 14, 2010
    Inventor: Cameron Pflueger
  • Publication number: 20100193584
    Abstract: A method of operating a shaker including: disposing a shaker screen in a shaker, wherein the shaker screen includes at least one tag selected from the group consisting of a radio frequency identification tag and a surface acoustic wave tag; reading shaker screen information from the at least one tag; and adjusting at least one shaker variable using the shaker screen information. In another aspect, embodiments relate to a shaker screen including: a filtering element disposed on a frame; wherein the frame includes: at least one outer frame member; at least one cross member; and at least one tag selected from the group consisting of a radio frequency identification tag and a surface acoustic wave tag; wherein at least a portion of the tag is integral with at least one of an outer frame member and a cross member. Also disclosed is a method of manufacturing a shaker screen having an integral tag.
    Type: Application
    Filed: April 15, 2008
    Publication date: August 5, 2010
    Applicant: M-I L.L.C.
    Inventor: Jonathan Getliff
  • Publication number: 20090000994
    Abstract: The present invention aims to detect breakage of a sieve in real-time and thus substantially reduce a cost increase of products caused by sieve breakage. The present invention also aims to reduce management cost of a sieve substantially. Multiple conductive bands 40 through 51 of a predetermined width, composed of multiple (for example, ten, in the structure shown in the figures) conductive weaving threads 24 and multiple (for example, ten) nonconductive weaving threads 23 and a certain number of nonconductive weaving threads 25, are formed in one area of the screen member 5. These conductive bands 40 through 51 of combined weave are formed parallel to the axial direction X at certain intervals D. Between each conductive band 40 through 51, nonconductive bands 52 through 62 plane-woven by using the nonconductive weaving threads 23 and the nonconductive weaving threads 25 are formed. A continuous conductive element 82 of a folded shape is formed, as shown in FIGS.
    Type: Application
    Filed: October 6, 2005
    Publication date: January 1, 2009
    Applicant: TSUKASA INDUSTRY CO., LTD.
    Inventors: Fumio Kato, Hitoshi Hanada
  • Publication number: 20080314804
    Abstract: A vibratory screening machine includes a primary screening area and a pre-screening assembly including a frame and screen assemblies. The screen assemblies are secured to the frame and form a pre-screening surface. The frame is attached to the vibratory screening machine such that the concave pre-screening surface is above the primary screening area.
    Type: Application
    Filed: March 19, 2008
    Publication date: December 25, 2008
    Applicant: DERRICK CORPORATION
    Inventors: Keith F. Wojciechowski, Christian Newman
  • Publication number: 20080277322
    Abstract: Disclosed herein is a perforated plate and a screening assembly for separating particulate matter comprising perforated plate, the perforated plate comprising a plurality of apertures of a selected size for receiving and separating the particulate matter, wherein the plate comprises a laminate, the laminate comprising two metal layers spaced apart by and joined by a damper layer comprising a viscoelastomer. A method of reducing noise generated by a vibratory separating apparatus using the inventive perforated plate is also disclosed.
    Type: Application
    Filed: April 21, 2008
    Publication date: November 13, 2008
    Applicant: M-I L.L.C.
    Inventor: Joseph L. Smith
  • Patent number: 7344032
    Abstract: Mechanical separators and screening machines, and methods for flexible sieve mat screening and flexible mat conveying are disclosed. In an example configuration, a flexible mat screening apparatus is provided with geometrically optimized guiding edge seals at lateral sides. One preferred configuration includes an assembly wherein a sieve mat has upwardly curved lateral sides forming a non-vertical, gradually curved shape. In another configuration, a movable support section is supported on a main frame section via a plurality of shear blocks, each arranged with its compression axis disposed horizontally. In yet another configuration, the movable support section is further connected to the main frame section via vertical stabilizers or leaf springs, the vertical stabilizers permitting longitudinal movement between the movable support section and the main frame section, but inhibiting vertical and/or lateral movement therebetween.
    Type: Grant
    Filed: June 14, 2004
    Date of Patent: March 18, 2008
    Assignee: Action Equipment Company, Inc.
    Inventors: Andrew T. LaVeine, Stanley L. Humiston
  • Publication number: 20040074816
    Abstract: A vibratory separator having a basket with a first side spaced-apart from a second side, screen assembly apparatus mounted in the basket, the screen assembly apparatus having a central portion, a first screen side and a second screen side, central support apparatus connected to the basket and positioned beneath and in contact with the central portion of the screen assembly apparatus, and pressing apparatus on the first side and second side of the basket for pressing down on the first screen side and on the second screen side of the screen assembly apparatus so that the central portion of the screen assembly apparatus is higher than the first screen side and the second screen side.
    Type: Application
    Filed: May 2, 2003
    Publication date: April 22, 2004
    Inventors: Kenneth W. Seyffert, George Alexander Burnett, Guy L. McClung
  • Patent number: 6520341
    Abstract: An embodiment of the present invention, accordingly, is directed to a tensioning device for tensioning a screen relative to a wall of a separator in a manner so that the proper tension can be applied to the screen in a relatively quick manner and yet the screen can be easily removed and a new one installed.
    Type: Grant
    Filed: April 18, 2001
    Date of Patent: February 18, 2003
    Assignee: M-I L.L.C.
    Inventors: Roger Suter, Gary Fout
  • Patent number: 6283302
    Abstract: A unibody structure for a screen assembly for a vibratory separator, and screens with such a structure, the unibody structure having, in certain aspects, an integral body member with a plurality of spaced-apart openings therethrough for sealingly abutting the shoulder support portion of an end of an adjacent screen defining fluid flow paths for screening and/or defining a plurality of spaced-apart supports for screening material, and the integral body member including side portions foldable to form one or two pairs of spaced-apart integral side members and/or the integral body member including two end portions foldable to form a pair of spaced-apart integral end members and/or a pair of spaced-apart ends. In certain aspects one of a pair of spaced-apart end portions is configured with a shoulder support portion and another end with a ledge portion.
    Type: Grant
    Filed: April 6, 2000
    Date of Patent: September 4, 2001
    Assignee: Tuboscope I/P, Inc.
    Inventors: David L. Schulte, Thomas C. Adams, Kenneth W. Seyffert, David W. Largent, Guy L. McClung, III, Jeffrey E. Walker, Hector M. Murray
  • Patent number: 6257413
    Abstract: Screen panels are disclosed which are adapted to form a portion of a screening cylinder for screening fibrous material. The screen panels are unitary and made of wear-resistant material including a plurality of axially extending grooves on the outer surface of the screen panel, a plurality of slit-shaped screening orifices disposed at the bottom of the axial grooves, at least one support ring extending circumferentially across the surface of the screen panel and integral therewith, and a flange is formed at the sides of the screen panel so that the screen panels can be assembled together without the use of welding.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: July 10, 2001
    Assignee: Valmet Fibertech AB
    Inventor: Mika Tolvanen
  • Patent number: 6220447
    Abstract: A variable frequency screening device consisting of a pair of spaced elongated side members, a flexible screen surface supported between the side members, a frame member supported between the side members and beneath a flexible screen surface, at least one striking frame shaft rotatably mounted between the elongated side members and beneath the flexible screening material, a striking frame mounted to the striking frame shaft, a second striking frame mounted to the striking frame shaft, and a motor to rotate the striking frame shaft which, in turn, causes the first and second striking frames to alternately strike the underside of the flexible screen material. The apparatus is equipped to permit the striking frames located on additional striking frame shafts to strike the screening material at independently selected amplitudes and frequencies.
    Type: Grant
    Filed: February 17, 1999
    Date of Patent: April 24, 2001
    Inventor: Gene F. Lambert
  • Patent number: 6161700
    Abstract: A screening screen having openings in the warp direction which are longer than these openings in the woof direction including warp wires and woof wires of the same maximum size extending at substantially maximum warp and woof crimp angles relative to each other which will not permit the warp wires and the woof wires to slide relative to each other. A method of fabricating a screening screen of the above type including the steps of determining the size of the openings in the woof direction and determining the maximum wire size of the warp and woof wires which will produce a maximum woof crimp angle which will not permit the woof wires to slide relative to the warp wires in the woof direction, and determining the length of the openings in the warp direction which will produce a substantially maximum warp crimp angle which will not permit the warp wires to slide relative to the woof wires in the warp direction.
    Type: Grant
    Filed: September 28, 1999
    Date of Patent: December 19, 2000
    Assignee: Derrick Manufacturing Corporation
    Inventor: John J. Bakula
  • Patent number: 6050423
    Abstract: Screen panels are arcuately distorted and wedged between lifter tubes inside of trommels for varying the orifice size, shape or distribution or repairing drum screen sections in trommel screen separators. In lieu of replacing screens on the drum framework, the drum is ordered with the largest screen opening for the anticipated application. Additional screen panels are inserted or laminated to the original drum screen to reduce or change screen openings and to produce the smaller fines. Because these small screen panels receive structural support from the drum screen, quick change screen panels can be fabricated out of many different frames, screening materials and screen opening sizes. In preferred embodiments, the smaller, lighter, framed screen panels are easily managed and quickly exchanged as required, reducing downtime and loss of production. Quick change screen panels have resilient arcuately bendable semi-rigid frames and are designed to be handled manually.
    Type: Grant
    Filed: July 27, 1998
    Date of Patent: April 18, 2000
    Assignee: Terex Corporation
    Inventors: Charles T. Dunnuck, Jonathan P. Prox
  • Patent number: 5613613
    Abstract: A lateral seal for sieve devices with a grate having a plurality of grate bars which are alternately movable and immovable with respect to the side walls of the sieve device. Flexible sieve elements are fastened to the grate bars and extend across the gaps between the grate bars. The flexible sieve elements are moved or tensioned and relaxed by the movable grate bars. The lateral seal is formed of flexible material and is connected to the sieve elements and to the side walls. The lateral seal includes sealing leaves which overlap one another in an imbricated manner. Each sealing leaf extends in the sieving direction between two adjacent stationary grate bars.
    Type: Grant
    Filed: June 8, 1995
    Date of Patent: March 25, 1997
    Assignee: IFE Industrie-Einrichtungen Fertigungs-Aktiengesellschaft
    Inventor: Leander Ahorner
  • Patent number: 5062949
    Abstract: A screening apparatus comprises an elongated support frame; a mobile, deformable sieve consisting of a sieve mat extending along the length of the support frame and having lateral edges; and a series of alternatingly immobile and mobile sieve mat carriers mounted on the support frame and extending transversely to the length of the support frame, the sieve mat being affixed to the carriers and the mobile carriers being movable with respect to the support frame in the direction of the length of the support frame, the lateral sieve mat edges extending transversely to the carriers and being raised to form rims for the sieve mat.
    Type: Grant
    Filed: July 17, 1990
    Date of Patent: November 5, 1991
    Assignee: Binder & Co. Aktiengesellschaft
    Inventor: Herbert Hausmann
  • Patent number: 4904394
    Abstract: A filter which is particularly useful with biological material is formed of porous piezoelectric material such as PZT or Polyvinylidene fluoride. By an application of a voltage to the piezoelectric material, the filter body is caused to vibrate so as to inhibit fouling. In a modification, the piezoelectric material is not itself porous but is bonded to a filter membrane such that vibrations of the piezoelectric material are transmitted to the membrane. Through suitable control of the vibration, the selectivity of the filter can be controlled. In other modifications the vibratory movement of the filter membrane can be produced in other ways such as electro-mechanically.
    Type: Grant
    Filed: April 1, 1987
    Date of Patent: February 27, 1990
    Assignee: Public Health Laboratory Service Board
    Inventors: David J. Clarke, Barrie C. Blake-Coleman
  • Patent number: 4340469
    Abstract: A vibratory screen apparatus is described for classifying loose solid material through horizontal screens 22-24 that are vibrated in elliptical paths by two independent eccentric weight means 28 and 30. The eccentric weight means 28 and 30 are mounted on the screen frame 15 elevationally below the center of gravity of the apparatus and upstream of the center of gravity toward the feed end. Each of the eccentric weight means include adjustable weights for adjusting the "throw" of the classifier that are outboard of bearings that support shafts that extend between the sides of the frame.
    Type: Grant
    Filed: January 23, 1981
    Date of Patent: July 20, 1982
    Assignee: Spokane Crusher Mfg. Co.
    Inventor: Fred C. Archer
  • Patent number: 4248701
    Abstract: A side seal assembly for a screening machine of the type which includes an elastic sealing element which bridges a slot between the sidewall and the screening lining of the screening machine, and a support for the sealing element is provided. The sealing element is covered with an elastic foam plastic at least at the side thereof facing the screening lining, and that the support for the sealing element is rigidly coupled with the sidewall of the screening machine.
    Type: Grant
    Filed: March 30, 1979
    Date of Patent: February 3, 1981
    Assignee: Hein, Lehmann AG
    Inventor: Theo Wenzel
  • Patent number: 4190527
    Abstract: A sieve screen module comprises a plurality of screen elements whose opposed edges contain complementary formations interlocked by an elongate member fixedly secured in the formation by a settable material. A number of modules may be assembled by passing a rod thru the elongate member.
    Type: Grant
    Filed: November 9, 1977
    Date of Patent: February 26, 1980
    Inventor: Clifford M. Spiller
  • Patent number: 4170549
    Abstract: A vibrating screen apparatus of the type wherein bearing housing discs and associated gears are mounted on self-aligning bearings which are supported by fixed internal spindles, with the gears centered on the bearings, and hubs connect the bearing housing discs to shafts extending through the spindles. The screen apparatus has a plurality of unbalanced shaft assemblies to impart vibratory movement to screens and are adjusted as to the angle of stroke of vibration by adjusting, relative to one shaft assembly, gearing associated with that shaft assembly. In one embodiment, a cam crank turns a bearing housing disc relative to an outer gear mounted thereon and a second cam crank limits such turning. In a second embodiment, a pinion is maually turned to turn a driving gear relative to a bearing housing disc.
    Type: Grant
    Filed: September 6, 1977
    Date of Patent: October 9, 1979
    Inventor: Louis W. Johnson
  • Patent number: 4167478
    Abstract: A universal modular screening, classifying, cleaning and sizing machine for dusty material, comprising a frame which supports a screen box by means of cables permitting the free oscillation of the box; the screen box containing spaced parallel screens and having passages for the material to enter the screen box and to discharge same at various levels, including air flow entry and outlet channels, and at the bottom of the screen box, a mechanism to produce the oscillation of the screen box; wherein the mechanism for producing oscillation of the screen box is composed of overlying counterweights which are capable of being moved relative to one another, opening and closing in the manner of a fan, releasably clamped between a holder which is driven at variable speed and a rotating hub whose support shaft is fixedly attached to the bottom of the screen box and the oscillating mechanism is located away from the center of gravity of the screen box at the head of the machine toward the material infeed, producing an o
    Type: Grant
    Filed: October 14, 1977
    Date of Patent: September 11, 1979
    Inventor: Felipe Salete
  • Patent number: 4137157
    Abstract: A screen tensioning assembly for vibratory, particulate material-screening apparatus of the type including a frame having spaced, parallel, upstanding side panels connected by spaced, horizontal screen support members, and two, extended area apertured screens supported on the support members and extending substantially between the side panels for separating finer from coarser material. An up-turned hook portion is formed at one side of each of the screens. Each of the screens is tensioned by a clamping member having opposite ends with one end normally engaging the respective hook portion and the other end engaging the respective side panel. Each clamping member has a pivot member secured thereto adjacent its other end, extending through an aperture in the respective side panel, and having a portion engaging the respective side panel so that the clamping member may be pivoted upwardly from the respective screen to a stored position thereby to disengage the one end thereof from the respective hook portion.
    Type: Grant
    Filed: October 12, 1976
    Date of Patent: January 30, 1979
    Assignee: Deister Machine Company, Inc.
    Inventors: Emil E. Deister, Emil M. Deister
  • Patent number: 4077873
    Abstract: A separator of the vibratory type comprising a box assembly of a plurality of planar pan screens resiliently suspended on a support base for vibratory motion thereon by resilient tension springs mounted between the box assembly and surrounding base truss members. The pan screens in the box assembly are formed of cylindrical sleeve frames and a circular screen having an elastomeric ring about its outer periphery with an external rim grooved to receive the lower edge of the superior sleeve frame. The pan screens are assembled into the box assembly by a plurality of tie rods disposed about the outer periphery of the box assembly to axially compress the assembly and screens into position and assure their support of material. The upper edge of each of the sleeve frames is deflected inwardly to telescopically receive the lower edge of the superior pan screen and effect radial deflection of the elastomeric ring of the superior pan screen when the assembly is compressed.
    Type: Grant
    Filed: July 31, 1975
    Date of Patent: March 7, 1978
    Inventor: Richard K. McKibben
  • Patent number: 3944484
    Abstract: A riddle assembly for the grading of particulate materials has a pair of screens forming respective screening stages and disposed one above another. Each of the stages is formed by a pair of longitudinally extending rails interconnected by longitudinally spaced transverse rails having multispan configuration with a pair of outer spans projecting laterally outwardly beyond the longitudinal rails and an inner span interconnecting the two rails and disposed between them. The multispan transverse beams are of nonuniform cross-section corresponding to the distribution of stresses whereby each beam is of uniform strength.
    Type: Grant
    Filed: February 22, 1974
    Date of Patent: March 16, 1976
    Assignee: Centralny Osrodek Projektowo-Technologiczny Przemyslu Maszyn Gorniczych "ORTEM"
    Inventor: Waclaw Jachna