Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 7303079 | Screening element The invention provides a screen which has a screen body (12) and a plurality of ribs which extend across the screen body. Screening apertures (118) are defined in the screen body by the ribs. A reinforcing frame (124) is embedded in the screen b... | 12/04/2007 |
| 7290499 | Self-cleaning pet litter box assembly A self-cleaning pet litter box has a conveyor to incrementally transport clumped litter material and solid pet waste to a waste receptacle. The conveyor has one end configured to extend into a pet litter container of the self-cleaning litter box and an opposite exit... | 11/06/2007 |
| 7186347 | Vibratory apparatus for separating liquid from liquid laden solid material A vibratory apparatus for separating a liquid from a liquid-laden solid material. The apparatus includes an inclined trough having a base with a first end and a second elevated with respect to the first end. A deck is attached to the trough base, the deck defining s... | 03/06/2007 |
| 7108793 | Method of separating liquid from liquid laden solid material A method of separating a liquid from a liquid-laden solid material includes providing a trough having a deck defining a support surface with passages extending through the support surface. The liquid-laden solid material is deposited onto the support surface so that... | 09/19/2006 |
| 6913690 | Debris removal system An automatic debris removal system for screening an effluent stream. The automatic debris removal system comprises a support frame positioned proximate the effluent stream, a bucket positionably connected to the frame, and a camming system attached to the support fr... | 07/05/2005 |
| 6006922 | Spacer for bar screen A doughnut or puck-shaped spacer has a centrally positioned square hole. A pie-shaped cutaway portion of the spacer allows the spacer to be elastically deformed mounting on a square rod. The rod and spacers join together the bars of a bar screen rack. Bar... | 12/28/1999 |
| 5941395 | Method and apparatus for conveying single use camera bodies while separating loose parts therefrom Used single use camera bodies (10) and miscellaneous loose parts (130, 132, 134) are dumped into a receiver conveyor (72) from which they move to a metering conveyor (88) which delivers them to a series of vibratory grid separators (106, 108, 110) having ... | 08/24/1999 |
| 5476179 | Adjustable bar screen The bars of one of two sets of interleaved screen bars is extended beyond the interleaved portion of the screen bed, thus forming a region of the screen bed which has screens particles of intermediate dimensions. A second improvement is a clamping member ... | 12/19/1995 |
| 5368167 | Vibrating conveyor screening method and apparatus A screen assembly according to the invention screens material by size and includes first and second sets of transversely spaced apart, longitudinally extending first and second members respectively. The members are parallel to each other, and some members... | 11/29/1994 |
| 5368168 | Bar screen with bars of staggered height A bar screen system comprising two sets of interleaved bars. In each set, the height of the individual bars is staggered so that every third bar is higher than the other bars, which are the same height. The bars are driven such that the bars in one set ar... | 11/29/1994 |
| 5305891 | Wood chip bar screen deck arrangement A screening deck for a wood chip screening apparatus including a plurality of parallel bars mounted in separate, interlaced grids, with the bars of at least one grid having top surfaces disposed in at least two planes, such that, during oscillatory moveme... | 04/26/1994 |
| 5284251 | Tension bar screen A bar screen apparatus (10) having inner and outer frame assemblies (14, 16), with each frame assembly including a plurality of thin, blade-like bar elements (44). Each frame assembly (14, 16) further includes means for maintaining the blade-like bar elem... | 02/08/1994 |
| 4664790 | Method for screening of wooden chips and the like and a screen A method for screening of wooden chips and the similar stuff placed upon a vibrating conveyor including a chute (1) and a frame (2), at which the bottom (4) of the chute (1) is provided with a screening grid consisting of mutually parallel screening rods ... | 05/12/1987 |
| 4660726 | Bar screen A bar screen for the separation by size of lump goods, such as wood chips, according to its thickness, and comprising parallel bars (1-5) provided with flights (6), where the bars are mutually movable.... | 04/28/1987 |
| 4558787 | Screening device having a screen deck composed of two screen frames A screening device having a screen deck composed of two screen frames (11, 27) provided with oblong, parallel screening elements (20, 28), the elements (20) of the first frame being arranged between the elements (28) of the second frame. The second frame ... | 12/17/1985 |
| 4504386 | Screening apparatus for wood chips An apparatus is disclosed for screening and separating wood chips or the like according to thickness. In the illustrated embodiment, the apparatus comprises two generally horizontal decks mounted one beneath the other, and with each deck having three scre... | 03/12/1985 |
| 4361239 | Size grader for pod vegetables A size grader for pod vegetables includes a horizontally oriented rotatable drum which contains banks of fixed grading members and movable panels oriented over each bank. The banks and panels are wanted on the drum so as to be parallel to its longitudinal... | 11/30/1982 |
| 4273647 | Apparatus for and a method of separating grinding bodies and ground material in an agitator mill A separator system for separating grinding bodies and ground material in an agitator mill wherein stationary and moveable or oscillating separator members in a grinding chamber define a variable gap which narrows when a moveable separator member moves aga... | 06/16/1981 |
| 4248701 | Side seal assembly for a screening machine A side seal assembly for a screening machine of the type which includes an elastic sealing element which bridges a slot between the sidewall and the screening lining of the screening machine, and a support for the sealing element is provided. The sealing ... | 02/03/1981 |
| 4188288 | Screen with tubular frame systems coupled for rectilinear motion A screening mechanism which has two ladder-shaped frame systems with spaced parallel ladder stringers and spaced parallel ladder rungs extending between the stringers, wherein at least one of the said frame systems is moving relatively to the other frame ... | 02/12/1980 |
| 4088570 | Tomato harvester separator An improved tomato harvester separator of the type having lengthwise extending bars with lengthwise extending gaps between them, has series of slender resilient fingers extending in both directions from alternate ones of the bars. This placement of the fi... | 05/09/1978 |
| 3971715 | Device for sieving, sorting, filtering and the like A device for sieving, sorting, filtering and the like, comprising two frame systems movable relatively to each other, each frame system comprising a number of carriers extending in the sieving direction and moving parallel to one another, said frame syste... | 07/27/1976 |
| 3971716 | Rock separator An apparatus for separating rocks larger than a predetermined size from a mixture of various size rocks utilizing a plurality of transversely spaced, inclined arms. The arms reciprocate back and forth, thereby expediting the flow of the smaller rocks into... | 07/27/1976 |
