Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 8002116 | Vibrating stackable fine industrial mineral high speed screening unit A single or multi-deck vibrating stackable material screening unit having a plurality of screen frames each with a plurality of compression cross members, a plurality of tension cross members, two air manifold cross members, a plurality of air operated isolation mou... | 08/23/2011 |
| 7357711 | Sieve support structure for an agricultural combine A sieve support structure including an elongate first rail, an elongate second rail, and rigid elongate compression members pivotally connected to and extending between the first and second rails at longitudinally spaced locations therealong, wherein the rails and t... | 04/15/2008 |
| 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 |
| 7228971 | Vibratory screening machine and vibratory screen and screen tensioning structure A vibratory screening machine having opposite sides with a plurality of stationary aligned tensioning members mounted on one side and a plurality of nut actuated movable tensioning members mounted on the opposite side and a vibratory screening screen mounted on the ... | 06/12/2007 |
| 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 |
| 7175027 | Shaker screen and clamping system A screen assembly, holding apparatus for it, and a vibratory separator with it, the vibratory separator, in one aspect, for separating components of material introduced thereto, the vibratory separator including a basket, a collection receptacle beneath the basket, ... | 02/13/2007 |
| 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 |
| 7011217 | Apparatus for separating coarse grain and fine grain An apparatus is proposed for separating coarse grain and fine grain with a screen (1) made of screen bars (3) which are situated successively adjacent to one another and slope downwardly in the conveying direction (2) of the coarse grain and wit... | 03/14/2006 |
| 7000777 | Vibratory separator screens Screen assemblies for a vibratory separator, the screen assemblies in certain aspects having at least two screening members, the at least two screening members connected by sewing material, and methods for making such screen assemblies. ... | 02/21/2006 |
| 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 |
| 6955262 | Removable seal apparatus for vibratory separator A support apparatus for supporting at least one screen assembly of a vibratory separator, the vibratory separator having seal apparatus for sealing an interface between a portion of the at least one screen assembly and an interior surface of the support apparatus, t... | 10/18/2005 |
| 6932883 | Screens for vibratory separators A method for making a screen assembly for a vibratory separator, the method including, in at least certain aspects, gluing together with glue at least two layers of fine screening material, allowing the glue to set, preheating the glued together at least two layers ... | 08/23/2005 |
| 6889846 | Hybrid screen A hybrid incline/horizontal screen for separating particulate material into predetermined size fractions, the screen having multiple screen decks mounted on a frame, at least one uppermost screen deck having an inclined receiving end and a horizontal discharge end. ... | 05/10/2005 |
| 6820748 | Vibratory screening machine with stacked and staggered screening units A vibratory screening machine including an outer frame, an inner frame resiliently mounted on the outer frame, a plurality of screening units mounted in stacked and staggered relationship on the inner frame, each of the screening units including a screen-supporting ... | 11/23/2004 |
| 6811032 | Shaker roll screen A shale shaker or vibratory separator for treating material, e.g. in one aspect, a shale shaker for treating drilling fluid having contaminants therein, the shale shaker having a base, a basket on the base, fluid introduction apparatus for introducing the drilling f... | 11/02/2004 |
| 6698593 | Vibratory screen separator A vibratory screen separator using screens includes a base and a housing resiliently mounted to the base and divided into two wall portions held together by a clamp band. Brackets are located high on the housing and lifts are diametrically positioned to e... | 03/02/2004 |
| 6662952 | Shale shakers and screens for them A screen support for supporting screening material of a screen assembly for use on a shale shaker for separating components of material introduced thereto, the screen support having a body, a plurality of spaced apart holes through the body, each of said ... | 12/16/2003 |
| 6565698 | Method for making vibratory separator screens A method for making a screen assembly for a vibratory separator, which, in certain aspects, includes placing a first layer of screening material below a glue application apparatus, and applying with the glue apparatus an amount of glue in a pattern to a p... | 05/20/2003 |
| 6431367 | Method and apparatus for exchanging sifter frames of a plan sifter The invention provides a method for exchanging a plurality of sifter frames of a plan sifter. The steps of the method include a step, when taking out a number of sifter frames from a sifting chamber, of taking out a plurality of sifter frames in a unitary... | 08/13/2002 |
| 6431366 | Vibratory screening machine with stacked and staggered screening units A vibratory screening machine including an outer frame, an inner frame resiliently mounted on the outer frame, a plurality of screening units mounted in stacked and staggered relationship on the inner frame, each of the screening units including a screen-... | 08/13/2002 |
| 6155428 | Vibratory screening machine A vibratory screening machine such as used for separating solid particulate material from drilling mud to allow the latter to be re-used, is described. The general form of the construction is similar to that of the VSM100 shaker machine as supplied by the... | 12/05/2000 |
| 6116428 | Finger screen deck assembly A deck finger assembly for vibrating screening apparatus which includes a plurality of rod-shaped finger members that are secured in a resilient block that is compressed between a pair of clamping plates. The resilient block includes a plurality of throug... | 09/12/2000 |
| 6000553 | Multiple screen system A screening plant including a housing to which first and second screen boxes are reciprocatably mounted. The screen boxes are coplanar and the inner peripheral edge of the first box is adjacent the inner peripheral edge of the second box. Separate prime m... | 12/14/1999 |
| 5851393 | Screen assembly Screen assemblies having a plurality of supports assembled with peripheral screen frames with screen cloth extending fully over the assemblies. The supports are assembled with each other and with the screen frame using dovetail mechanisms. Each support in... | 12/22/1998 |
| 5769239 | Grain scalping apparatus A gravity flow apparatus that scalps off the large pieces of foreign material from grain before processing or storage. The scalper consists of an upright housing with a grain inlet at the top. The grain enters the housing and drops onto a dead head slide.... | 06/23/1998 |
| 5749471 | Vibrating screen A vibrating screen for the sizing of granular material such as gravel, sand, crushed stone, etc., having a frame (1) and a screen body (2) supported on springs (6), directional oscillating movements being imparted to the screen body by a motor powered vib... | 05/12/1998 |
| 5641071 | Convertible material separating apparatus, and convertible kits A convertible vibratory material separating apparatus, and kits to convert the apparatus to a woven-screen or finger-rod upper separating surface. The separating apparatus includes a universal shaker head adapted for vibratory movement within a frame with... | 06/24/1997 |
| 5398815 | Landfill waste material separating method A waste material separating apparatus and method of separating waste landfill material which apparatus and method includes a frame and a vibratory screening deck or tier within the frame, the screening deck having a plurality of generally parallel, straig... | 03/21/1995 |
| 5385669 | Mining screen device and grid structure therefor A grid structure and screen device including the grid structure are provided for a vibrating shaker for filtering solids out of a moving fluid stream passing across this screen device. The grid structure has openings defined by intersecting lines of subst... | 01/31/1995 |
| 5341939 | Multiple deck vibrating screen apparatus A vibrating screen apparatus for effecting screening of materials includes a frame with first and second vibrating screen deck units mounted one above the other in it. To provide maximum flexibility of operation, the vibrating deck units are pivoted at th... | 08/30/1994 |
| 5322170 | Waste material separating apparatus and method A waste material separating apparatus and method which comprises a frame and a vibratory screening deck or tier within the frame, the screening deck having a plurality of generally parallel, straight rod elements to act as bludgeons on the waste material.... | 06/21/1994 |
| 5279425 | Stackable screen module arrangement Each stackable screen module arrangement includes a first elongated side wall and a second elongated side wall, the side walls being spaced from each other by a plurality of cross members which extend between the side walls. The cross members also serve t... | 01/18/1994 |
| 5275293 | Rock crusher aggregate screen repair accessory apparatus and method of complying to gradation specifications An aggregate screen repair/screen modification kit including at least one screen patch member. The screen patch member is formed from a rigid mesh material that requires a hand tool to effect a repair, or modification task, and that also conforms to speci... | 01/04/1994 |
| 5255789 | Circular vibratory screen separator A circular vibratory screen separator having a separator housing resiliently mounted to a base. A vibratory generator is mounted to the housing for vibratory screen separation. Semicircular slots are cut through the sidewall of the housing normal to the a... | 10/26/1993 |
| 5226546 | Circular vibratory screen separator A circular vibratory screen separator having a separator housing resiliently mounted to a base. A vibratory generator is mounted to the housing for vibratory screen separation. Semicircular slots are cut through the sidewall of the housing normal to the a... | 07/13/1993 |
| 5221008 | Vibratory screening machine and non-clogging wear-reducing screen assembly therefor A vibratory screen for a vibratory screening machine consisting of a plate having a plurality of spaced openings therein, a coarse screen located in contiguous relationship to the plate, a fine screen on top of the coarse screen, a finer screen on top of ... | 06/22/1993 |
| 5219078 | Material separating and sizing apparatus with vibrating rods and method A material separating apparatus and method which comprises a frame of a pair of spaced apart generally downwardly sloping, upper and lower vibratory screening decks within the frame, the upper screening deck comprising a plurality of comb-like elements, w... | 06/15/1993 |
| 5059310 | Analytical sieve apparatus A vertical set of sieves receives the particulate material from a vibrating trough conveyor above the set and is vibrated by an agitator on the machine frame. The sieves are spread apart and then tilted to dump the collected particles into respective funn... | 10/22/1991 |
