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| Number | Title | Issue Date |
| 7344032 | Flexible sieve mat screening apparatus 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 latera... | 03/18/2008 |
| 7063214 | Interlocking screens for vibratory separators Interconnectible screen assemblies for vibratory separators or shale shakers and methods for manipulating such screen assemblies which, in certain aspects, include a first screen assembly and a second screen assembly positioning at least a portion of the first scree... | 06/20/2006 |
| 6918492 | Baffle assembly for a sealed shaft on a vibratory apparatus A sealed wheel case for use on a vibrating aggregate processing device comprises a housing sized to hold a rotatable wheel supported on a shaft, the housing having a base, a peripheral sidewall, and a cover. The cover includes an aperture adapted to receive therethr... | 07/19/2005 |
| 6520341 | Screen tensioning device and method for a vibrating screen separator 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 ... | 02/18/2003 |
| 6283302 | Unibody screen structure 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... | 09/04/2001 |
| 6257413 | Screen panel 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 surfa... | 07/10/2001 |
| 6220447 | Variable frequency screening apparatus 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 on... | 04/24/2001 |
| 6161700 | Vibratory screening screen and method of fabrication thereof 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... | 12/19/2000 |
| 6050423 | Trommel with quick change screen panels 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... | 04/18/2000 |
| 5613613 | Side sealing arrangement for sieve devices 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 gap... | 03/25/1997 |
| 5062949 | Deformable sieve mat screening apparatus having raised sieve mat rims 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... | 11/05/1991 |
| 4904394 | Method for selective filtering of a fluid using porous piezoelectric material 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 i... | 02/27/1990 |
| 4340469 | Vibratory screen apparatus 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 ... | 07/20/1982 |
| 4248701 | Side seal assembly for a screening machine 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 ... | 02/03/1981 |
| 4190527 | Interlocking screen elements 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 ... | 02/26/1980 |
| 4170549 | Vibrating screen apparatus 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... | 10/09/1979 |
| 4167478 | Universal modular screening, classifying, cleaning and sizing machine 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... | 09/11/1979 |
| 4137157 | Screen tension assembly for vibratory screening apparatus 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 scr... | 01/30/1979 |
| 4077873 | Vibratory separator 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 ... | 03/07/1978 |
| 3944484 | Structural supports for heavy duty riddle assembly 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 ... | 03/16/1976 |
