Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 7331469 | Vibratory separator with automatically adjustable beach A vibratory separator having a basket for supporting screen apparatus for treating material, the basket pivotably mounted on a base, vibratory apparatus connected to the basket for vibrating the basket, the material forming a pool on the screen apparatus, and a beac... | 02/19/2008 |
| 7278540 | Adjustable basket vibratory separator A vibratory separator having a base, a basket movably mounted on the base and for supporting screen apparatus for treating material introduced into the vibratory separator, the basket on a base and pivotable with respect thereto, vibratory apparatus connected to the... | 10/09/2007 |
| 7275612 | Fix structure of battery for vehicles A sealing member is composed of upper and lower holders which are molded members formed of rubber or resin. The upper holder has a stopper having a tubular shape with a flange inserted on its inner periphery. The lower holder has an inserted nut and outer threaded m... | 10/02/2007 |
| 7240800 | Vibratory sand reclaiming apparatus having normal and reject modes An attrition mill for reclaiming foundry sand from deposited material having lumps of used foundry sand and included material includes a housing defining a chamber for receiving the lumps of used foundry sand and included material. A base is disposed within the hous... | 07/10/2007 |
| 7216767 | Screen basket and shale shakers A screen mounting basket for a vibratory separator for separating components of material introduced into the basket, the vibratory separator including a collection receptacle beneath the basket, the basket including two opposed spaced-apart side walls having first e... | 05/15/2007 |
| 7198156 | Dam basket for vibratory separators A vibratory separator and a screen mounting basket for a vibratory separator for separating components of material introduced into the basket, the vibratory separator including a collection receptacle beneath the basket, at least one screen assembly mounted in the b... | 04/03/2007 |
| 7195121 | Sifting device A sifting device including a sieve box (1), which is caused to oscillate using a drive (4), as a fundamental oscillation system having essentially horizontal first transverse carriers (1.3) and a supplementary oscillation system (2), atta... | 03/27/2007 |
| 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 |
| 7182207 | System and process for break detection in porous elements for screening or filtering A detector for breaks in screens and filters employed in material separators includes a transmitter of RF signals and a receiver of RF signals located to either side of a screen. The separator includes a chamber having a barrier to RF signals with a path through the... | 02/27/2007 |
| 7168569 | Vibratory screening machine for earth drilling installation An oil and gas drilling installation having a drill rig with a bell nipple having an outlet at a predetermined elevation, a screening machine having a feeder and an angularly adjustable vibratory frame, a weir positioned between the feeder and the vibratory frame, t... | 01/30/2007 |
| 7114620 | Multi-deck screening machine A screening machine comprises a screen frame elastically supported on a fixed base and comprising screen cheeks and screen frame crossbeams which connect the screen cheeks, a drive for oscillating the screen frame, and a swing frame elastically coupled to the screen... | 10/03/2006 |
| 7080960 | Apparatus and method for transporting waste materials An apparatus for transporting solid waste drill cuttings material produced in the drilling of an oil or gas well, the apparatus including: a waste supply apparatus; a feeder to transport the material; a pneumatic conveying apparatus to which the material is transfer... | 07/25/2006 |
| 7044457 | Mount with replaceable load bearing and rebound members A mount with replaceable load bearing and rebound members is provided. The mount comprises a housing that defines a first chamber and a second chamber; a load bearing member removably located in said first chamber, said load bearing member comprising a load bearing ... | 05/16/2006 |
| 6997325 | System and process for break detection in porous elements for screening or filtering A detector for breaks in screens and filters employed in material separators includes a transmitter of RF signals and a receiver of RF signals located to either side of a screen. The separator includes a chamber having a barrier to RF signals with a path through the... | 02/14/2006 |
| 6953122 | Smart screening machine A screening machine that includes a screen having a periphery and a central porous region is provided. A motion amplifier is substantially rigidly attached in direct contact with the periphery of the screen and not in direct contact with the central porous region. A... | 10/11/2005 |
| 6938779 | Screen assembly for a shale shaker A screen assembly for a shale shaker comprising a panel and a support structure, the panel having an area provided with a multiplicity of apertures and at least one layer of screening material arranged over the multiplicity of apertures, wherein said panel is remova... | 09/06/2005 |
| 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 |
| 6629610 | Screen with ramps for vibratory separator system A screen which in at least certain aspects has at least one layer of screening material, at least one ramp formed on the at least one layer of screening material, and the at least one ramp having an upwardly projecting portion and also a lower portion or ... | 10/07/2003 |
| 6575304 | Vibrating screen apparatus A vibrating screen apparatus for sizing materials is shown that has a minimum of moving parts therein. A vibrating motor is mounted below longitudinal vibrating bars. The vibrating bars are set on air mounts, which air mounts are between the vibrating bar... | 06/10/2003 |
| 6412644 | Vibratory separator A vibratory separator for separating components of material introduced to the vibratory separator, the vibratory separator including a basket for holding screening apparatus, the basket having two sides spaced-apart by a first end at which the material is... | 07/02/2002 |
| 6386375 | Lubrication system for vibrating flat screens A vibrating screen supported by springs and vibrated via rotating gear sets. The gears are provided with off center weights synchronized to produce angularly directed vibration for moving the material from end to end on the screen. The gears are lubricate... | 05/14/2002 |
| 6347708 | Wheel case for a vibratory apparatus A sealed wheel case is provided for use with a vibratory device for vibrating aggregate material. The vibratory device includes a frame and a rotating shaft extending transversely across the frame, with the shaft having a wheel. The sealed wheel case incl... | 02/19/2002 |
| 6286687 | Method and device for vibration screening Method and apparatus for the vibration screening of coating powders in particular, wherein a screening cloth is used, which is supported loosely on a screen frame and fixed to a clamping frame, wherein the screening cloth may additionally be supported on ... | 09/11/2001 |
| 6096210 | Screening system A vibratory separator having a resiliently mounted housing with a vibratory drive. A screen extends across the housing and a cover is positionable over the screen. The screen includes a discharge port therethrough aligned with a discharge passage for remo... | 08/01/2000 |
| 6070737 | Screening systems and methods for screening particulate material The method and system of the present invention provides for fast, convenient and low cost installation and removal from a particulate screening assembly of an apparatus for protecting the underlying structural members of the screening assembly from the ad... | 06/06/2000 |
| 6029822 | Drive system for a vibratory screening plant A vibratory screening device includes a frame and a screen, supported by the frame, for separating undersize and oversize material. A vibrating device, coupled to the screen includes a first output shaft with an axis of rotation that oscillates relative t... | 02/29/2000 |
| 6003679 | Sieving device with duel independent frequency input A sieving device includes a sieve having a base, a drum and a main rim. A screen assembly having a mesh screen and a screen frame extending around a periphery of the mesh screen is resiliently mounted within the main rim. A low frequency vibrational drive... | 12/21/1999 |
| 5951864 | Screening system A vibratory separator having a resiliently mounted housing with a vibratory drive. A screen extends across the housing and a cover is positionable over the screen. The screen includes a discharge port therethrough aligned with a discharge passage for remo... | 09/14/1999 |
| 5921401 | Mobile screening apparatus A mobile screening apparatus can be vibrated by two similarly-constructed vibration units that are mounted on or near the front and rear walls of the box that contains the vibrating screen assembly. Each vibration unit comprises an hydraulic motor having ... | 07/13/1999 |
| 5896998 | Vibratory screening apparatus A vibratory screening apparatus has two vibrator motors (19, 20, 19', 20') having respective out-of-balance weights arranged to produce substantially linear vibratory movement when, in use, these motors (19, 20, 19', 20') are running in mutually opposite ... | 04/27/1999 |
| 5816412 | Screening systems and methods for screening particulate material The subject invention relates to a screening system, preferably a finger screening system, for screening particulate material. The screening system for screening particulate material comprises a screening assembly including a housing. A plurality of scree... | 10/06/1998 |
| 5685982 | Vectored thrust shale shaker A vibratory vectored thrust shaker for separating solid materials from fluids has a base frame and a screen bed support frame carrying a mesh screen supported horizontally above the base frame by resilient supports. An eccentrically weighted vibratory sha... | 11/11/1997 |
| 5683580 | Nonuniform forward elliptical motion end feed separator A vibratory deck of an end feed separator transfers material in a linear direction from the feed end to the discharge end of a screen mounted on the separator frame. A pair of rotary eccentric vibrators is independently mounted in mirror relationship on o... | 11/04/1997 |
| 5614094 | Vibrating screen unit A vibrating screen unit for dewatering dredged material. The vibrating screen unit includes a frame and a top screen deck, a middle screen deck and a bottom screen deck. The middle screen deck includes a splitter which extends across the width of the fram... | 03/25/1997 |
| 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 |
| 5494173 | Vibrating screen apparatus for use in non-level operating conditions A vibrating screen apparatus capable of maintaining operation when in an out-of-level orientation is disclosed. The apparatus includes a generally rigid frame having first and second sidewalls and top and bottom screen decks extending therebetween. The fr... | 02/27/1996 |
| 5301814 | Increasing the relative motion of a screen deck The screening efficiency of a gyratory screening machine, of the type having a moving base, is significantly increased by mounting to the base a spring/mass system which is tuned so that operation of the machine drive produces amplified movement of the ma... | 04/12/1994 |
| 5265730 | Vibratory screen separator A vibratory screen separator having a base, resilient mountings and a separator frame. Screens are fixed in the separator frame. Rotary eccentric vibrators are positioned on each side of the frame at the center of mass and inclined both in the direction o... | 11/30/1993 |
| 5160034 | Vibrating bucket screen for beaches The present vibrating bucket screen attachment for cleaning beaches and for being mounted on mobile machines such as skid-steer loaders includes an outer excavating bucket with a sand-scooping blade and runners on the outer bucket for supporting the outer... | 11/03/1992 |
| 5037535 | Superposed two frame system elastic screening machine having independent oscillating drives for each frame system In a screening machine comprising two screening frames (13 and 31) each having mutual oppositely located feed and discharge ends on which there is arranged an elastic screening lining (54) and which are caused to oscillate by independent oscillating drive... | 08/06/1991 |
