Famous Patents
In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8042680 | Releasable coupling A releasable coupling, including a first and a second coupling part for transmitting torque, where the first coupling part has a projection which extends in the direction of the geometrical axis of rotation and in the circumferential surface of which a first periphe... | 10/25/2011 |
| 7934593 | Transport device The transport device comprises a screw conveyor (5), in a casing (5a) of which a propeller (5b) rotates. The device also comprises an elastic cradle (7), interposed between the casing (5a) of the screw and the ... | 05/03/2011 |
| 7516838 | Safety arrangement for grain augers and the like This invention provides an improved safety overload prevention device for a material conveying auger which includes an auger casing, a main drive shaft journalled therein and a main auger flight secured around the shaft, an intake flight section 11 secured to... | 04/14/2009 |
| 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 |
| 7153077 | Increasing railcar capacity with auger In an embodiment, a device for increasing railcar capacity is disclosed. The device includes one or more augers that transfer and pack bulk materials into a railcar. In an embodiment, the one or more augers are compression augers. In another embodiment, the device i... | 12/26/2006 |
| 7137503 | Auger brush An auger assembly suitable for use with a food separator is provided with a removable brush. The auger assembly includes an auger defining a channel around the crest thereof. A brush is received in the channel and defining a flange at each end thereof. First and sec... | 11/21/2006 |
| 7124878 | Bagging machine rotor tooth having a concave face An agricultural feed bagging machine rotor which includes a plurality of rotor teeth mounted thereon with each of the rotor teeth having a tooth face provided thereon. Each of the tooth faces has a progressively increasing thickness from the inner end thereof to the... | 10/24/2006 |
| 7051865 | Auger flight support An auger flight support includes a mounting portion having an arcuate concave surface adapted to be fixedly mounted around at least a portion of an outer circumferential surface of an auger shaft adjacent to a flight extending along a helical path around the shaft, ... | 05/30/2006 |
| 7023949 | Jet pump assembly repair method A BWR jet pump assembly has a wedge slidably mounted on a jet pump that is movable under the force of gravity to seat between a bracket and the jet pump in order to horizontally support the jet pump against vibrations. The wedge or the bracket is repaired in situ by... | 04/04/2006 |
| 6820735 | Bagging machine rotor tooth having a concave face An agricultural feed bagging machine rotor which includes a plurality of rotor teeth mounted thereon with each of the rotor teeth having a tooth face provided thereon. Each of the tooth faces has a progressively increasing thickness from the inner end thereof to the... | 11/23/2004 |
| 6283275 | Screw and apparatus using same for conveying wet solids The invention provides a combination shafted and shaftless screw, and an apparatus and method for conveying wet solids using the screw.... | 09/04/2001 |
| 6009692 | Rotor for a bagging machine having quick change rotor teeth A rotor for a bagging machine comprising an elongated, cylindrical body having a horizontally disposed rotational axis. A plurality of sockets are provided on the cylindrical body in a spaced-apart relationship with respect to each other. A rotor tooth is... | 01/04/2000 |
| 5875882 | Auger drive and method of driving an auger A drive (D) for an auger conveyor (FC) is disclosed where the auger conveyor comprises a conveyor conduit (11) and a centerless helical coil auger (15) disposed within the conduit. The auger has a longitudinal axis and a plurality of spaced, helical fligh... | 03/02/1999 |
| 5845764 | Wear element for screw presses or the like A wear element comprising a wear plate of a hard, typically ceramic material, locked in a dovetail recess of a bracket made of steel. The bracket consists of two initially separate parts comprising a respective one of the two inclined dovetail wedge surfa... | 12/08/1998 |
| 5687832 | Flexible bladed auger An auger for moving granular material and slurries of granular materials comprising: a shaft; a rigid inner blade portion fastened to and spiraling around the shaft; and a flexible substantially larger outer blade portion carried by the inner blade portio... | 11/18/1997 |
| 5673618 | Screw press flight with wear resistant surface A screw flight element of a mechanical screw press for expressing liquids from fibrous material such as may be found in rendering operations and a method of remanufacture thereof and the product produced by the method. The helical flight section is one of... | 10/07/1997 |
| 5573660 | Screw conveyor A screw conveyor including a feed screw formed, at least partially, as a shankless screw, a jacket surrounding the feed screw and a brush cooperating with the inner surface of the jacket for cleaning the same, with the feed screw including a plurality of ... | 11/12/1996 |
| 5433577 | Refuse bag opener A bag opening machine includes a trough and a feed screw that is rotatably mounted in the trough to advance bags that at least partially fit between the flight of the feed screw along the length of the trough. There are a pair of restrictions that the bag... | 07/18/1995 |
| 5429581 | Wear-resistant tile surfacing for a centrifuge conveyor A hard surfaced screw conveyor comprising a helical metal blade mounted for rotation about a longitudinal axis of the helix and radially extending to an end surface, the blade defining at least one female formation therein having a substantially dovetail ... | 07/04/1995 |
| 5279407 | Auger wear shoe A wear shoe for an auger having a pair of spaced apart tapered openings extending therethrough is secured to an auger flight using a tapered nut having an axial extent as the tapered opening and dimensioned to fit into and contact each tapered opening to ... | 01/18/1994 |
| 5253746 | Auger assembly for a bulk seed transport bin A bulk seed transport bin includes an enclosed storage container mounted on a frame. An auger extends upwardly out of a roof portion of the container and has an upper dispensing port. The auger includes a lower end extending through the interior of the co... | 10/19/1993 |
| 5088397 | Cast formed bi-metallic worm assembly A cast-formed bi-metallic worm assembly of a mechanical screw press for expressing liquids from fibrous materials and a method of manufacture therefor. The worm assembly is rotatably driven by the press drive shaft and includes an outer flight body having... | 02/18/1992 |
| 5044489 | Feed screw Feed screw for feeding a mix, said screw consisting of a core part (1), which becomes thicker towards its trailing end, and of a screw spiral (2) that revolves around said core part. The feed screw is provided with a detachable tip portion (3) at its thic... | 09/03/1991 |
| 5033608 | Screw conveyor A screw conveyor mechanism mounted within the trough assembly. One end of said screw conveyor is removably mounted on the trough assembly. A drive shaft is provided for rotating the screw conveyor with the drive shaft being removably connected to the oute... | 07/23/1991 |
| 5004095 | Apparatus for use in variable operating temperatures Conveying apparatus for use in an environment having significant variations in temperature, and having a molded plastic screw conveyor on a metal drive shaft is disclosed. The molded plastic screw conveyor includes a non-circular axial aperture which rece... | 04/02/1991 |
| 5004096 | Screw conveyor coupling apparatus Readily attachable and detachable coupling apparatus for coupling the drive shaft of a modular plastic screw conveyor with a power source is substantially concealed and protected by the modular plastic screw conveyor. Plastic screw conveyor modules define... | 04/02/1991 |
| 4958720 | Screw conveyor coupling apparatus Readily attachable and detachable apparatus for coupling the drive shaft of a modular plastic screw conveyor with a power source is substantially concealed and protected by the modular plastic screw conveyor. Plastic screw conveyor modules define a non-ci... | 09/25/1990 |
| 4913280 | Auger for particulate materials An auger assembly for transporting particulate material. The auger assembly comprises a housing, a frame to support the housing, and an auger rotatably mounted in said housing. The auger comprises a thermoplastic material helically wrapped around a metal ... | 04/03/1990 |
| 4911558 | Screw conveyor The screw conveyor has at least one feed and mixing screw having a plurality of vanes extending radially from a shaft arranged in at least one series like a coil or spiral. In particular, the screw conveyor can have at least two substantially equal motori... | 03/27/1990 |
| 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 |
| 4852719 | Modular screw conveyor A screw conveyor composed of a plurality of modules mated end to end and of identical integrally molded construction. Each module is molded of a suitable plastic material and has integrally formed therewith a cylindrical body, a coaxially disposed tube wi... | 08/01/1989 |
| 4842126 | Auger flight section A flight section for mounting at the feed end of an auger comprises an intergral moulding from a resilient elastomeric material such as natural rubber which includes a central sleeve portion and an outer flight. The sleeve has an inner surface for engagin... | 06/27/1989 |
| 4838700 | Assemblies for a worm press This invention is directed to a worm shaft assembly used to move corrosive and/or abrasive material such is part of an extrusion device or a press. More particularly, it relates to the construction of flights, feed quills and intermediate rings or collars... | 06/13/1989 |
| 4746384 | Apparatus and method for permanently joining plastic screw conveyor flights Apparatus for bonding or joining confronting edges of flights of adjacent integrally molded screw conveyor modules is disclosed. The apparatus comprises means for supporting a plurality of the modules in axial alignment and with confronting edges of the m... | 05/24/1988 |
| 4691818 | Concealed drive coupling for use with modular screw conveyor A method and apparatus for coupling the drive shaft of an integrally molded modular screw conveyor is disclosed. A non-circular elongated drive shaft includes a non-circular axially extending aperture for receiving a first end of a coupling member having ... | 09/08/1987 |
| 4666033 | Auger apparatus Auger apparatus includes a drive portion, a connector portion and a flight portion. The drive portion includes an elongated rigid shaft member including a longitudinal axis disposed along the path of material being advanced by the auger apparatus. The con... | 05/19/1987 |
| 4624577 | Screw element for a material processing machine A screw element for use in a material-processing machine comprising at least one screw formed by a central driving shaft (2) on which are mounted a plurality of hollow elements (12, 13 . . . ) provided on their inner wall with grooves (31) engaging with c... | 11/25/1986 |
| 4527899 | Processing shaft for machines for extruding, kneading, dispersing, mixing or homogenizing, in particular, plastics materials Processing shaft for machines for extruding or the like, comprising a core shaft having at its front end an axial stop member for slip-on processing members arranged non-rotationally on the core shaft, further comprising a spacer sleeve supporting the pro... | 07/09/1985 |
| 4519496 | Conveyor screw with wear-resistant members attached to its operative surface A conveyor screw includes a substantially continuous row of wear-resistant elements mounted on the wearing surface thereof. Opposed complementary semi-circular recesses are formed in adjacent wear-resistant elements providing a combined circular recess. A... | 05/28/1985 |
| 4466533 | Blade edge wear clips Wear clips for protecting the edges of auger-type blades and similarly curved blade edges, are formed of steel channels filled with a matrix of irregular shaped and sized, small, hard carbide particles and a soft, ductile, brazing material. The clips are ... | 08/21/1984 |
