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| Number | Title | Issue Date |
| 7578394 | Method and apparatuses for screening A screening machine includes wall members, a screen assembly, and a compression assembly. The screen assembly includes a frame with a plurality of side members and a screen supported by the frame. The compression assembly is attached to at least one wall member and ... | 08/25/2009 |
| 7182206 | Screen energizer A screening system including a vibratory screen separator having a resiliently mounted frame with a low frequency vibratory drive coupled to that frame. A taut screen is rigidly mounted in the frame and a vibration transmitter assembly is resiliently mounted to the ... | 02/27/2007 |
| 7025210 | Method and apparatus for attenuating sound from vibratory screening machines A method of attenuating the sound emanating from a bank of a plurality of vibrating screens of a plurality of vibrating screening machines including the steps of providing a master pulse of known phase and frequency, comparing the phase and frequency of a plurality ... | 04/11/2006 |
| 6938778 | Smart screening machine A screening machine having a base is provided. A screen is coupled to the base to separate material by size. The screening machine includes a vibration motor having piezoelectric elements and a vibration amplifier located between the piezoelectric elements and the s... | 09/06/2005 |
| 6726024 | Apparatus for sieving particulate materials A sieving device having a mesh screen detachable from a frame body is capable of easily removing particulate material remained on the mesh screen and cleaning of the mesh screen and being installed even in a confined space requiring a sanitary condition. The particu... | 04/27/2004 |
| 6715612 | Vibrator assembly The invention provides a vibrator assembly (5) having a pair of vibrators (1) held in spaced apart relationship by a frame (10), screen assembly (1), having a screen (2, 3) extending between a pair of side plates (4), is sec... | 04/06/2004 |
| 6079569 | Efficiency ultrasonic sieving apparatus An ultrasonic sieving apparatus (10) is described which comprises a de-coupler (18) for enabling a combination of a transducer (T) and a first resonator (16) to be supported with respect to a sieve which includes a separation medium (14) provided in a fra... | 06/27/2000 |
| 5595306 | Screening system A screening system having a resiliently mounted housing with a screen extending thereacross. The housing is vibrated by a low frequency vibratory drive using eccentric weights. About the peripheral frame of the screen, a high frequency drive or drives is ... | 01/21/1997 |
| 5398816 | Fine mesh screening A screening system having a resiliently mounted frame with a screen extending thereacross. The frame is vibrated by a low frequency vibratory drive using eccentric weights. About the peripheral frame of the screen, a high frequency drive or drives is empl... | 03/21/1995 |
| 5248042 | Resilient wire-wrapped, and adjustably tensioned screen drum with drum overload-preventing feedback control A mobile screening apparatus includes a horizontal rotary drum preferably fed by underflow from a prescreening device that is reversible endless belt of screening grizzly bars. The belt reverses for expelling oversize material caught between bars. Force n... | 09/28/1993 |
| 5190645 | Automatically adjusting shale shaker or the like A shale shaker or the like comprises a hollow body having an inlet and an outlet. A screen is mounted generally horizontally in the hollow body between the inlet and the outlet. A motive assembly is operatively connected to the screen for repetitively mov... | 03/02/1993 |
| 5143222 | Sieving apparatus Sieving apparatus has a piezoelectric transducer directly bonded to a grating (100), the transducer comprising a number of piezoelectric elements (1) sandwiched between first and second bodies (2,3 ). The first body (2) is in two parts (2A, 2B) which are ... | 09/01/1992 |
| 4816144 | Sieving apparatus Sieving apparatus has a piezo-electric transducer (1) directly bonded to a grating (100), the supply to the transducer (1) being controlled by sensing resonance of the grating (100) and any deviation therefrom and controlling the supply to maintain resona... | 03/28/1989 |
| 4392951 | Screen filter A screen filter comprising a plurality of rollers arranged in parallel, spaced relationship with a plurality of carriers positioned between the rollers with the axes of the carriers parallel to the axes of the rollers. An endless wire is wound spirally ov... | 07/12/1983 |
| 4299692 | Apparatus for handling a mold box in a vacuum casting system A vibratory apparatus for use in association with a vacuum casting apparatus wherein the box containing the sand and casting upon completion of the vacuum casting is moved on track means to a vibrating station where it is lifted off the track, tilted, and... | 11/10/1981 |
| 4272366 | Heavy duty two mass vibratory machine A two-mass heavy duty vibratory machine has a frame in the form of a box-like cage in which a working member, such as a screen, is received. In one embodiment of the disclosure, the frame is resiliently mounted on a stationary support surface and the work... | 06/09/1981 |
| 4152255 | Vibratory material handling apparatus including screens The invention relates to vibratory material handling apparatus and more particularly to a dual exciter system derive for vibrating the apparatus wherein the exciters are positioned on either side of the center of gravity of the apparatus and direct vibrat... | 05/01/1979 |
