Class 198/662 - Plural helical surface formations

Subclass of Class 198 - Conveyors: power-driven
Definition: Apparatus wherein there are a plurality of helical surface
No. of patents: 34
Last issue date: 09/02/2008

Number	Title	Issue Date
7419048	Transverse conveying screw for a harvesting front attachment A transverse conveying screw for a harvesting front attachment. The tranverse conveying screw includes a body, screw elements disposed around the body adapted to convey material from the outer ends of the body toward the center of the body, and a ring-shaped termina...	09/02/2008
7255223	Mixture with a smooth throughput A transport device for transporting a transportable product, especially a bulk-type product, includes an essentially cylindrical chamber containing at least one shaft which extends along the cylindrical chamber and comprises a plurality of first transport elements f...	08/14/2007
7017732	Multiple extruder configuration The invention concerns a multiple-extruder configuration in which two co-rotating twin-screw extruders and a counter-rotating twin screw extruder are connected to each other with respect to the flow of material. ...	03/28/2006
6991089	Cooling station for disk-shaped substrates A cooling station for data carrier disks, in particular for injection-molded substrates of optically readable data carriers, such as CD, CD-R, DVD, CD single, DVD single and the like, has at least three rotatable cooling spindles which are arranged in spaced-apart p...	01/31/2006
6193053	Concentric auger feeder A concentric auger feeder with the larger diameter outer auger having a flighting direction opposite that of the small or inner auger installed in the core of the outer auger. The two screw conveyors are connected to a reversible motor drive by a reversin...	02/27/2001
5910243	Displacement device A device for displacing sediment, for example sand, from the bottom of a liquid-filled container (20) to a receptacle device (29) in which first conveyor (22) is disposed in the edge region (21) of the container (20) near the bottom of the container to re...	06/08/1999
5871081	Concentric auger feeder A material conveying system for accurately conveying a specific predetermined amount of a material. The system includes a large primary auger that is rotated to convey the material until the amount of material closely approaches the predetermined amount. ...	02/16/1999
5676827	Apparatus for discharge of sediment from a tank A device for displacing sediment, for example sand, from the bottom of a liquid-filled container (20) to a receptacle device (29) in which first conveyor (22) is disposed in the edge region (21) of the container (20) near the bottom of the container to re...	10/14/1997
5603435	Repainting gun A hand-held repointing gun has an inclined feed chamber, which receives the material to be applied, and a driven feed screw which conveys the material from the chamber to an applicator nozzle. The discharge end of the nozzle defines an axis which is orien...	02/18/1997
5584641	Stone metering system for railroad track maintenance vehicle A stone metering system for a railroad track maintenance vehicle providing improved accuracy in stone delivery. The system includes a surge hopper, a number of metering augers, and a corresponding number of splitters. The metering augers convey ballast st...	12/17/1996
5531555	Bale collector with rollers and baler suitable thereof Bale collector, includes a frame provided with wheels, bale-carrying rollers, coupling element which are suitable for coupling the frame to a mobile baler in order to receive bales onto the carrying rollers from a bale outlet of the baler via a front end-...	07/02/1996
5529170	Feed screw for sedimentation or treatment systems The invention concerns a feed screw in the form of a self-supporting, axleless helix whose surface extends essentially radially, the feed screw being used in sedimentation or treatment systems for clearing suspensions in paper making processes. The invent...	06/25/1996
5524796	Screw feeder with multiple concentric flights A compound screw feeder for uniform volumetric flow rates of particulate solids, suitable for low, nonpulsating feed rates, comprises coaxial inner and outer screw flights. The flights both extend throughout the feeder section and produce a net discharge ...	06/11/1996
5443588	Cutter-mixer-feeder wagon with centrally improved screw profile The invention carries out a cutter-mixer-feeder for fodder and grass or straw materials which includes a container (2) with at least one opening (3) for introducing the material (23) to be processed and at least one door (24) for discharging the processed...	08/22/1995
5367860	Agricultural feed bagging machine having an improved auger conveyor mounted thereon A conveyor for an agricultural feed bagging machine is disclosed and includes a double-bottom auger trough which extends upwardly and rearwardly over the upper end of the front hopper panel of the hopper on the machine. A pair of elongated augers are moun...	11/29/1994
5351805	Method and apparatus for unloading bulk materials An unloader for bulk materials is provided to transfer material such as cement from a barge or other bulk container. It includes a moveable and rotatable support member such as a crane or cantilevered arm that is adjacent the bulk container. A first conve...	10/04/1994
4995531	Ring dispenser A ring dispenser comprising a rotating rod having an acme thread along one portion thereof and a helical coil spring at a dispensing end thereof feeds individual rings to a ring transfer device located at the dispensing end of the rod. The rod is rotated ...	02/26/1991
4872546	Screw conveyor device A screw conveyor device for pourable material has a tubular or hose-like housing which near to one end is provided with an inlet opening and near to the other end with an outlet opening for the conveyed material, also a flexible core which extends through...	10/10/1989
4836460	Screw mill A screw mill, for example, used for producing fine powder grains of calcium carbonate used as a bulking agent for paper. According to the screw mill of the present invention, the combination of the continuous screw and discontinuous vanes makes it possibl...	06/06/1989
4730554	Appliance for the alignment of onions or other vegetable bulbs The invention deals with an appliance with which onions or other vegetable bulbs can be oriented with their axial direction in a particular position necessary to present the onions to a processing machine for instance for the removal of top and root ends,...	03/15/1988
4726715	Screw powder feeders A screw powder feeder has a rotary screw (12) disposed at the base of a hopper (10). The screw (12) comprises a twist drill bit. Powder is discharged into a chamber (18) and picked-up by a flow of gas. The pressure in chamber (18) is varied relative to th...	02/23/1988
4717014	Screw conveyor A screw conveyor has a feeder device for promoting the supply of material to the screw, said feeder device and said screw being rotatable in opposite directions. The feeder device has blades (14, 15) which are curved in the manner of a trawl to draw in th...	01/05/1988
4712922	Material mixing apparatus An apparatus for mixing animal feeds and the like comprises a rotor having two opposing end assemblies connected by a center shaft for rotation within a mixer box. A flighted outer auger is mounted in the terminal portion of each set of corresponding radi...	12/15/1987
4617177	System for continuous solid/liquid extraction A system for the solid/liquid extraction of in particular vegetable raw materials, such as oilseeds and oil-yielding plants, with low-boiling solvents, such as gasoline and the like, in continuous co-current manner. The equipment, which is also to be regarded ...	10/14/1986
4605047	Filling device for bulk material, especially liquids For the metered filling of bulk material, especially liquids, into receptacles, especially glass receptacles, there is provided a filling station to which a conveying device leads the receptacles, which are to be filled, individually or in groups. A weigh...	08/12/1986
4597672	Center discharge mixer for fluent and nonfluent material A feed mixer includes a mixer tank with a bottom wall having two curved wall portions defining the bottom of a large main chamber and smaller auxiliary chamber with an elongated ridge therebetween. A rotor having several elongated rotor bars adjacent the ...	07/01/1986
4530432	Screw conveyer The invention provides a screw conveyer which has a helically wound member (23) attached to the screw which member extends from each turn of the screw towards the next turn and is of decreasing diameter along the screw....	07/23/1985
4400175	Process and an apparatus for the crystallization of melts with a simultaneous crushing operation The product which is present in the form of a melt is cooled and thereby crystallized in a double-shaft worm machine which has self-cleaning worm shafts rotating in the same direction. The crystallizing material is continually crushed in a repeatedly cutt...	08/23/1983
4399906	Temperature expansive screw conveyor A screw conveyor (10) is disclosed for use in environments having a large range of temperature. The screw conveyor (10) includes a hollow shaft (12) having a number of aligned circular holes (18a, 18b) therein, with adjacent sets of holes being at right a...	08/23/1983
4275808	Interchangeable volumetric screw feeder A volumetric screw feeder is interchangeably convertible from a twin screw feeder to a single screw feeder without modification of the gearing or drive means. The change from twin screw feeder to single screw feeder is made by interchanging the screws and...	06/30/1981
4234074	Apparatus for separating metal cuttings from liquid coolants An apparatus for conveying solids from a lower to a higher elevation, such as metal cuttings from machine coolants, including a horizontal auger rotatably mounted in the semi-circular bottom of an open top hopper, one end of the hopper being open, an incl...	11/18/1980
4194844	Multiple powder conveyor system Apparatus for receiving and conveying a plurality of different powders simultaneously and delivering the powders continuously as a blended mix, in which a number of concentric tubes define annular bores carrying helical screw members driven at one end for...	03/25/1980
4089300	Auger assembly for use in feed dispensing hoppers Auger assembly for use in feed dispensing hoppers comprising in combination an elongate housing member with feed dispensing openings on the underside thereof, web portions extending above the dispensing openings, feed admitting cutouts longitudinally spac...	05/16/1978
4037801	Grinding apparatus An apparatus for grinding hard grains and similar materials having a unique force feed arrangement which insures uniform material feed to the grinding members and a resulting uniform output of ground material from the apparatus....	07/26/1977

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Class 198/662 - Plural helical surface formations