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| Number | Title | Issue Date |
| 6938846 | Screening apparatus with slot ring moveable in axial direction Apparatus for screening pulp suspensions is provided, including a housing, a rotary screen within the housing, a screen chamber between the rotary screen and the housing, a reject outlet, an accept outlet, an outer screen surface defining the outer surface of the sc... | 09/06/2005 |
| 6702120 | Screening apparatus including two screen means Apparatus for separating a fiber suspension is provided including a housing with an upper chamber in the upper portion thereof, a rotor rotatably mounted in the housing, a first rotary screen mounted for rotation with the rotor and dividing the housing in... | 03/09/2004 |
| 6311850 | Pressure screening apparatus for screening a paper stock suspension and screen clearer for such a screening apparatus A pressure screening apparatus for screening a stock suspension and screen clearer for a pressure screening apparatus. The pressure screening apparatus includes an inflow chamber, a suspension inflow connected to one end of the inflow chamber, a reject ou... | 11/06/2001 |
| 6217209 | Dry material and slurry processor A material processor having an enclosure with an ingress to receive material into the enclosure, and a discharge to remove material from the enclosure. A spindle is located in the enclosure, has a longitudinal spindle axis, and is rotatable about the spin... | 04/17/2001 |
| 6015228 | Dry material and slurry processor A material processor having an enclosure with an ingress to receive material into the enclosure, and a discharge to remove homogenous material from the enclosure. A spindle is located in the enclosure, has a longitudinal spindle axis, and is rotatable abo... | 01/18/2000 |
| 5370791 | Backwashable self-cleaning strainer A backwashable self-cleaning strainer has a vertical housing containing a rotatable strainer basket. The housing has an inlet adjacent the top thereof and an outlet adjacent the bottom wall, with a flush discharge opening in the bottom wall. Components fo... | 12/06/1994 |
| 5183568 | Self-cleaning strainer A self-cleaning strainer comprises a vertically disposed housing which contains a rotatable strainer basket. The housing has an open top, closed by a closure plate, an inlet adjacent the top of the housing and an outlet adjacent a closed bottom of the hou... | 02/02/1993 |
| 5152891 | Self-cleaning strainer A backwash strainer including a body, a strainer element having an inlet side contained in the body, and a space defined between the body and the strainer element. The body includes an inlet to the strainer element and an outlet from the annular space. A ... | 10/06/1992 |
| 4927529 | Method and apparatus for separating knots A method of and apparatus for separating knots from a fibre suspension in the wood processing industry. A known problem in the prior art has been the quick wear of the screen surface of the knotter when the screen surface has been profiled. On the other h... | 05/22/1990 |
| 4851111 | Apparatus for screening paper fiber stock In screening apparatus for paper fiber stock of the type wherein a cylindrical perforate screen member defines screening and accepts chambers on the inner and outer sides thereof in a closed, pressurized housing, the inlet chamber for stock to be screened... | 07/25/1989 |
| 4645590 | Vertical type screening machine for granular material A vertical type screening machine for granular material comprises a housing. A rotary drum assembly is rotatably mounted within the housing and comprises a drum having a substantially vertical rotary axis and a helical blade helically wound around a circu... | 02/24/1987 |
| 4000063 | Apparatus for separating knots from pulp An improved system for the production of digested pulp from wood chips and knots which includes a separating apparatus, connected to the digester output, capable of separating knots from partially cooked wood chips and fibers at the digester pressure and ... | 12/28/1976 |
| 3939065 | Screening device A treatment chamber for purification and fractionation of materials suspensions, particularly fibrous suspensions under pressure, and wherein the treatment chamber includes a rotary screening drum provided with pulsation members, the drum also including s... | 02/17/1976 |
| 3933649 | Apparatus for purifying and fractionating particle suspensions An apparatus for effecting purification and fractional separation of a material suspension, which includes a screening assembly of the closed centripetal type comprising an outer annular chamber with a stationary outer shell and also an inward rotatable d... | 01/20/1976 |
