Class 209/385 - Wipers

Subclass of Class 209 - Classifying, separating, and assorting solids
Definition: Devices movable in contact with sifting elements to wipe
No. of patents: 24
Last issue date: 06/24/2008

Number	Title	Issue Date
7389882	Multi-hardness composite screen frame A self-cleaning screen assembly for a vibratory separator is disclosed. The self-cleaning screen assembly includes a peripheral frame having a top mounting surface to which at least one screen cloth is affixed and a bottom mounting surface to which a flow through su...	06/24/2008
6679384	Method and means for paper pulp filtering Process for the filtration of paper pulp with a device that comprises a rotor and a stator; one of the two, filter (1), has perforations of slot or hole types, and the other, the backwashing element, includes means that are intended to generate pressure p...	01/20/2004
6364119	Screening device and apparatus including same A screening device including a screen having a first side for presentation to material to be screened and a second side, a plurality of screen openings in the screen extending between the first and second side thereof, a plurality of tines mounted on a su...	04/02/2002
6336557	Sieve cleaner for a plansifter A sieve frame for a plansifter has a sieve covering, a bottom, and at least one sieve cleaner including a foot and a plurality of cleaning heads. The cleaning heads may have a brush-like or nubby configuration. The cleaning heads are configured to move er...	01/08/2002
6193073	Paper stock screening apparatus and method Pressure screening apparatus for screening a suspension of paper fiber stock employs a rotor in which a single impulse or foil member is carried or positioned to move along a discrete portion of the screen surface. This arrangement improves efficiency of ...	02/27/2001
6126016	Screening device and apparatus including same A screening device including a screen includes a first side for presentation to a body of material to be screened and a second side. A plurality of elongate screen openings are formed in the screen extending between the first and second sides thereof. A p...	10/03/2000
6095339	Sieve box screen and pan cleaner A sieve box for a particulate sifter has a pan, a screen, and a number of screen and pan clearing devices. Each device has a first member with fingers engageable with the pan to remove particulates that accumulate on the pan and a second member with finge...	08/01/2000
6029821	Screening device A screening device is described which is adapted in particular for fiber suspensions when paper is pulped. Along the outer circumference of a rotor body, there are disposed vanes which are oriented towards a screen wall. The vane is supported by a support...	02/29/2000
5967335	Screening device for screening a suspension Arrangement for separating off undesired particles from a suspension stream. The arrangement has a closed housing with an inlet for the suspension from which particles are to be separated off, an outlet for the treated suspension and an outlet for undesir...	10/19/1999
5605233	Trommel cleaner A trommel cleaner apparatus having a non-circular rotatable shaft with a plurality of flapper elements mounted thereto for wiping and cleaning engagement with a trommel is provided herein. The flapper elements each have a hub having inner and outer surfac...	02/25/1997
5588536	Dredge with bi-directional grizzly A water based dredge includes a grizzly with a sieve and a pair of bi-directional rakes. The rakes translate relative to the stationary sieve to slide waste or recoverable material off of the grid and onto a refuse barge or material processing apparatus, ...	12/31/1996
5538139	Arrangement for a plansifter A large or square plansifter has a large number of sieve stacks with e.g. more than 20 sieve boxes. Such boxes are constructed without a supporting grating and design so as to be exchangeable in the covered state and so that they can be placed on or in th...	07/23/1996
5051171	Self-cleaning system for vibratory screens A system for providing a self-cleaning function to rectangular vibratory screens which may be disposed on an incline in a vibratory separating system. Pans or screens defining flow-through support surfaces span across the frame of a screen parallel and di...	09/24/1991
4946589	High volume permanent magnet filter for removing ferromagnetic impurities A permanent magnetic filter is provided in a form that includes a closed vessel having an inlet plenum, a central filtering region, and an exit plenum. The central filtering region includes a plurality of magnet filter tubes arranged in a substantially un...	08/07/1990
4792394	Bar screening apparatus A bar screening apparatus for the efficient screening and removal of solid materials from a liquid flow stream. The bar screen includes a plurality of bars that are disposed in substantially parallel adjacent relation to each other and each have an upstre...	12/20/1988
4784761	Drum screen In order to enable thickness screening of the chips in a drum screen comprising a rotatable screen drum with screening slits (1) extending in circumferential direction and formed between a plurality of parallel rings (3) arranged one after the other and j...	11/15/1988
4702826	Screen cleaner for particle size analyzer Disclosed is a device for sequentially cleaning the screens of a particle size analyzer of the indexing drum type, as each screen moves out of the screening position. The cleaning member is preferably removed from the drum during each screening step. The ...	10/27/1987
4609467	Rotary plow assembly Disclosed is a plow assembly adapted for use with an endless conveyor type filtering device. The assembly comprises an elongated support member and at least one plow depending therefrom. The plow comprises a shaft affixed to the support member, a plow bod...	09/02/1986
4608156	Multi-screen grain separator A separating apparatus for classifying particulate material according to size, including a sub-housing enclosing a horizontally extending cleaning screen. A plurality of separate conveyor mounted paddles sweep a top surface of the cleaning screen and a fu...	08/26/1986
4602998	Raisable plow assembly Disclosed is a filtering device comprising an endless perforate conveyor belt adapted to carry a liquid-containing material and extract liquid from the material through the belt, and a plow assembly for disrupting the material carried by the belt. The plo...	07/29/1986
4303508	Screening device A screening assembly is provided including a closed housing having an inlet and a first outlet, and a second outlet. A screen drum having a plurality of circumferential slots is mounted for rotation in the housing so that liquid passing from the inlet to ...	12/01/1981
4184957	Screening apparatus for removing coarse material from fluids including a screen cleaner A pair of screens are arranged one behind the other and served by a common cleaning rake for the removal of the screenings from both screens in a single operating step....	01/22/1980
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
3957631	Portable screening apparatus A portable screening apparatus comprises a base assembly having a two wheel assembly associated therewith. A shaft is journaled through a block member affixed onto the base assembly, wherein a handle member is affixed onto the outer end of the shaft. A fr...	05/18/1976

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Class 209/385 - Wipers