Patents by Inventor Karl Keller

Karl Keller has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20090158801
    Abstract: In an installation part (1) in a rolling stand for receiving a roll journal (24) having a journal bush (24) of a roll which is used in the processing of steel and non -ferrous metals, wherein the installation part (1) has a cambered side (3) which faces the roll and a run-out side (4) which lies opposite the cambered side (3), having lubricant receiving spaces (7, 15, 16) on the cambered side (3), at least one housing tongue (23) is provided on the cambered side (3) for the at least partial delimitation of the lubricant receiving spaces (7, 15, 16) with respect to one another and for the formation of a gap (25) with the journal bush (24), the width of which gap (25) is below a predefined gap width threshold value.
    Type: Application
    Filed: April 5, 2007
    Publication date: June 25, 2009
    Inventors: Karl Keller, Daniel Knie
  • Patent number: 7549647
    Abstract: The invention relates to a sealing device for roller bearings, comprising a journal seal (4), which is arranged upstream on the roller-ball side of the annular seal (8) which is connected in a rigid manner to an annular projection (7) of the bearing housing (5). The sealing lip (18) of the sealing device is applied to the front side (10) of the roller (1) by means of a sealing contact. The aim of the invention is to improve the sealing device in such a manner that the sealing lip of the annular seal is barely impinged upon by cooling means mixed by impurities, making it long lasting and ensuring that no undesired water can penetrate into said outlet.
    Type: Grant
    Filed: November 11, 2004
    Date of Patent: June 23, 2009
    Assignee: SMS Demag AG
    Inventors: Konrad Roeingh, Karl Keller, Rolf Hücker
  • Publication number: 20090116774
    Abstract: A bearing for rolling-mill rolls which each have two roll journals (2), of which at least one carries a journal bush (4) in the axial direction at least in a certain region, said journal bush (4) being arranged in a rotationally locked manner via a feather key (5), wherein the journal hush (4) is enclosed by a bearing bush (6) held in an insert (7), and a load-bearing lubricating film is provided between the journal bush (4) and the bearing bush (6), wherein the feather key (5) is provided in a region of the roll journal (2) which lies outside the region of the roll compression force acting on the journal bush (4) and transmitted to the insert (7), is to be improved in such a way that the fluctuations in the roll compression force which are caused by the feather key or its locating slot are ruled out and the roll is nonetheless of very short construction, such that considerable savings are obtained through narrower foundations and narrower rolling mill halls and also narrower roll workshops.
    Type: Application
    Filed: February 27, 2007
    Publication date: May 7, 2009
    Inventors: Karl Keller, Konrad Roeingh, Kurt Scheffe
  • Patent number: 7484891
    Abstract: An oil film bearing (1) for roll pins (4), which or whose pin bush (3) that is placed thereon is surrounded by a bearing bush (3) placed in an insert (2). The bearing bush has at least two inner lying hydrostatic pockets (9, 9?), which are arranged, in essence, in a common axial line and which can be supplied with a pressure medium via a check valve (18) and via boreholes (6, 6?) extending inside the bearing bush (5). Throttles (15, 15?) inside the boreholes (6, 6?) ensure an optimal hydrostatic bearing even when the roll pin (4) or the pin bush (3) is in an oblique position inside the bearing bush (5). The aim of the invention is to improve an oil film bearing of the aforementioned type whereby economically assuring the hydrostatic function of the bearing and in which the inspection of the throttles (15, 15?) is possible without further ado.
    Type: Grant
    Filed: July 7, 2004
    Date of Patent: February 3, 2009
    Assignee: SMS Demag AG
    Inventors: Karl Keller, Konrad Roeingh
  • Publication number: 20080317912
    Abstract: A method for preserving foodstuffs, in which the foodstuffs are heated in the moist state in a container suitable for transport and storage with ventilation openings. The foodstuffs are heated for a defined period by a microwave, for at least such a time as hot steam forms in the container and exits through the ventilation openings. Gas is injected into the container after the heating process for at least partial compensation of the pressure drop in the container.
    Type: Application
    Filed: February 1, 2006
    Publication date: December 25, 2008
    Applicant: MICROPLAST GMBH
    Inventors: Karl Keller, Silvia Kurtz
  • Publication number: 20080175523
    Abstract: An oil film bearing (1) for roll pins (4), which or whose pin bush (3) that is placed thereon is surrounded by a bearing bush (3) placed in an insert (2). The bearing bush has at least two inner lying hydrostatic pockets (9, 9?), which are arranged, in essence, in a common axial line and which can be supplied with a pressure medium via a check valve (18) and via boreholes (6, 6?) extending inside the bearing bush (5). Throttles (15, 15?) inside the boreholes (6, 6?) ensure an optimal hydrostatic bearing even when the roll pin (4) or the pin bush (3) is in an oblique position inside the bearing bush (5). The aim of the invention is to improve an oil film bearing of the aforementioned type whereby economically assuring the hydrostatic function of the bearing and in which the inspection of the throttles (15, 15?) is possible without further ado.
    Type: Application
    Filed: July 7, 2004
    Publication date: July 24, 2008
    Inventors: Karl Keller, Konrad Roeingh
  • Patent number: 7396021
    Abstract: A roll stub is rotatable relative to a stationary support and has a rotatable support fixed to the roll stub, an annular and radially directed seal surface fixed on one of the supports, and a seal ring on the other of the supports having a lip engageable with the seal surface. A support element that is substantially less stiff than the seal ring is provided between the other support and the seal ring for biasing the lip against the seal surface while permitting of the seal ring relative to the other support. A clamp body rotationally fixed to the other support directly engages the seal ring and presses the seal ring directly against an abutment. Interengaging tooth formations on the clamp body and on the seal ring arrest the seal ring on the other support against angular movement thereon while permitting relative radial movement.
    Type: Grant
    Filed: May 4, 2006
    Date of Patent: July 8, 2008
    Assignee: SMS Demag Aktiengesellschaft
    Inventors: Karl Keller, Konrad Roeingh
  • Patent number: 7377696
    Abstract: Disclosed is a device for influencing in a controlled manner the load-bearing force of supporting rollers (SW) that rest on working rollers. The neck (WZ) of said supporting rollers (SW) which is provided with an extension (ZA) is mounted in roller bearings or sliding bearings that are disposed in a bearing-supporting housing of the rollers of a roller stand. The neck extension (ZA) is mounted in a supporting bearing. The outside of the housing (LG) of said supporting bearing is connected to the bearing-supporting housing. An intermediate housing (ZG) which is inserted in the housing (LG) of the supporting bearing cylindrically encloses the supporting bearing, is impinged upon by a piston cylinder unit (RB, SK), and can be displaced within said housing (LG) in a radial direction relative to the axis of the neck extension (ZA).
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: May 27, 2008
    Assignee: SMS Demag AG
    Inventors: Kurt Scheffe, Karl Keller, Achim Klein, Michael Breuer, Jörn Sohler
  • Publication number: 20070290448
    Abstract: The invention relates to a device (1) for sealing the ball side of a bearing of a roller journal (2), comprising a journal bushing (3) which is drawn to the roller journal (2), said journal bushing being associated with a bearing ring (5), a bearing bushing (7) which is mounted in an insertion piece (6), also comprising radial shaft seals which are associated with the insertion piece via a holder (11) and which are provided with radial lips (13, 13) which co-operate with the bearing ring (5) and a sealing arrangement (16) which is arranged upstream from the radial shaft seals so that the roller (4) can roll. The aim of the invention is to improve said device in such a way that it can be produced and operated economically such that it consists of only a small number of parts and has an improved sealing effect.
    Type: Application
    Filed: January 18, 2005
    Publication date: December 20, 2007
    Inventors: Konrad Roeingh, Karl Keller, Kurt Scheffe
  • Publication number: 20070158916
    Abstract: The invention relates to a sealing device for cylinder bearings, in particular, oil film bearings or roller bearings. According to the invention, a sealing ring (6) which has a cylindrically-shaped sealing surface (7) is connected to the cylinder journal (2) or the journal bushing (3). An elastic sealing element (9, 10) which is arranged in a fixed manner in a holder (8), which connected to an insertion piece (5), lies on said sealing surface. The sealing surface (7) is rolled.
    Type: Application
    Filed: December 9, 2004
    Publication date: July 12, 2007
    Inventors: Konrad Roeingh, Karl Keller
  • Publication number: 20070140601
    Abstract: The invention relates to a sealing device for roller bearings, comprising a journal seal (4), which is arranged upstream on the roller-ball side of the annular seal (8) which is connected in a rigid manner to an annular projection (7) of the bearing housing (5). The sealing lip (18) of the sealing device is applied to the front side (10) of the roller (1) by means of a sealing contact. The aim of the invention is to improve the sealing device in such a manner that the sealing lip of the annular seal is barely impinged upon by cooling means mixed by impurities, making it long lasting and ensuring that no undesired water can penetrate into said outlet.
    Type: Application
    Filed: November 11, 2004
    Publication date: June 21, 2007
    Inventors: Konrad Roeingh, Karl Keller, Rolf Hucker
  • Publication number: 20070107210
    Abstract: The invention relates to a device for installing and removing a bearing assembly (3) which consists of a chock in which a trunnion bearing is arranged on a supporting roller stud (1) of a rolling stand. The aim of said invention is to replace said assembly by means of an operationally reliable device without carrying out modifications or large-scale modifications of the supporting roller stud (1), in particular to obtain reproducible mounting forces in order to ensure best long-term wear-less service possible, best possible rotation and easily controlled stripping forces for reliable operation of the rolling stand. The invention also relates to a nut (8) fixed to the roller stud (1) prestressed against the bearing assembly (3). According to said invention, a stripping device (11) can be temporarily coupled to the bearing assembly (3), the hydraulic cylinder (15) thereof resting against the roller stud (1).
    Type: Application
    Filed: June 17, 2004
    Publication date: May 17, 2007
    Inventors: Karl Keller, Kanrad Roeingh
  • Patent number: 7213846
    Abstract: A bearing has a mount relative to which can move a part to which hydraulic fluid must be supplied. A connector has a housing fixed to the bearing mount and formed with a central bore centered on an axis and with a radial bore extending outward from the central bore. A tube axially shiftable in the central bore forms at the radial bore an annular compartment and has a passage opening radially into the compartment and axially at one end of the tube. A conduit is connected a coupling at one end of the tube and the part. Another coupling at an outer end of the radial bore connects to a source of hydraulic fluid under pressure so that the fluid can flow through the radial bore, annular compartment, and passage to the coupling at the one end of the tube and then through the conduit to the movable bearing part.
    Type: Grant
    Filed: November 9, 2002
    Date of Patent: May 8, 2007
    Assignee: SMS Demag Aktiengesellschaft
    Inventors: Rolf Hücker, Karl Keller
  • Publication number: 20070003174
    Abstract: The invention relates to a mounting piece (1) for receiving a roll neck of a roll used in steel and non-ferrous metal processing having at least one lubricant- receiving chamber (7) on a roll body side (3) and at least one lubricant- receiving chamber (8) on a discharge side (4) which are located beneath a lowest support point (9), connection bores (10) between the lubricant-receiving chambers (7, 8) on the roll body and discharge sides (3, 4), wherein the lubricant (2) is collected in additional lubricant-receiving chambers (15, 16) in the mounting piece (1).
    Type: Application
    Filed: January 16, 2004
    Publication date: January 4, 2007
    Inventor: Karl Keller
  • Publication number: 20060202429
    Abstract: A roll stub is rotatable relative to a stationary support and has a rotatable support fixed to the roll stub, an annular and radially directed seal surface fixed on one of the supports, and a seal ring on the other of the supports having a lip engageable with the seal surface. A support element that is substantially less stiff than the seal ring is provided between the other support and the seal ring for biasing the lip against the seal surface while permitting of the seal ring relative to the other support. A clamp body rotationally fixed to the other support directly engages the seal ring and presses the seal ring directly against an abutment. Interengaging tooth formations on the clamp body and on the seal ring arrest the seal ring on the other support against angular movement thereon while permitting relative radial movement.
    Type: Application
    Filed: May 4, 2006
    Publication date: September 14, 2006
    Inventors: Karl Keller, Konrad Roeingh
  • Publication number: 20050254737
    Abstract: Disclosed is a device for influencing in a controlled manner the load-bearing force of supporting rollers (SW) that rest on working rollers. The neck (WZ) of said supporting rollers (SW) which is provided with an extension (ZA) is mounted in roller bearings or sliding bearings that are disposed in a bearing-supporting housing of the rollers of a roller stand. The neck extension (ZA) is mounted in a supporting bearing. The outside of the housing (LG) of said supporting bearing is connected to the bearing-supporting housing. An intermediate housing (ZG) which is inserted in the housing (LG) of the supporting bearing cylindrically encloses the supporting bearing, is impinged upon by a piston cylinder unit (RB, SK), and can be displaced within said housing (LG) in a radial direction relative to the axis of the neck extension (ZA).
    Type: Application
    Filed: April 30, 2003
    Publication date: November 17, 2005
    Inventors: Kurt Scheffe, Karl Keller, Achim Klein, Michael Breuer, Jorn Sohler
  • Patent number: 6866270
    Abstract: A C-section ring fixed on a steel-mill roll and coaxially surrounding its stub has inner and outer axially extending legs defining an axially open cavity. The inner leg is tapered away from the roll and is formed adjacent the free end with a radially outwardly open annular groove. An annular cover part fixed on a stationary support, engaged in the cavity, forming a drain compartment open axially away from the roll, and formed with a radially outwardly open catchment groove radially aligned with a free end of the inner leg is also formed with a passage extending from the catchment groove to the drain compartment. An annular extension on the cover part has an inner surface carrying a seal ring that bears radially inward on the stub. An add-on part on the extension forms with the extension, with the cover part, and with the C-section ring a labyrinth.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: March 15, 2005
    Assignee: SMS Demag Aktiengesellschaft
    Inventors: Karl Keller, Konrad Roeingh
  • Publication number: 20050035561
    Abstract: Disclosed is a sealing device (16) for a rotatably mounted roll (15). Said sealing device (16) comprises at least one annular body which sits on a roll neck (2), encompasses said roll neck (2), and is provided with at least one outward-extending lip (21) that rests in a sealing manner against a stationary part (7) during rotation of the roll. Said ring body is embodied in at least two pieces (17,18), one first piece (17) resting against one part (2) of the roll (15) and one second piece (18) encompassing at least one outward-extending lip (21, 22).
    Type: Application
    Filed: February 22, 2003
    Publication date: February 17, 2005
    Inventors: Konrad Roeingh, Karl Keller
  • Publication number: 20040262915
    Abstract: The invention relates to a connecting block (1) for the hydraulic supply lines of the hydrostatic unit of an oil-film bearing, which is fixed to a built-in bearing mounting (11) and retains at least one hydraulic hose, which is connected to the bearing bush that is displaceably located in the built-in bearing mounting (11). The aim of the invention is to improve a connecting block of this type in order to increase the operational reliability of the hydrostatic unit.
    Type: Application
    Filed: May 18, 2004
    Publication date: December 30, 2004
    Inventors: Rolf Hucker, Karl Keller
  • Publication number: 20040100029
    Abstract: The invention relates to a sealing device for cylinder bearings. An annular projection which is connected to the cylinder neck (2) in a rotationally fixed manner carries an annular sealing surface which interacts with an elastic, stationary sealing element (23, 24), a sealing labyrinth consisting of stationary parts and parts which are connected to the cylinder (1) being placed upstream from the sealing element (13) towards the cylinder barrel. The aim of the invention is to develop one such sealing device in such a way that good sealing action can be achieved using simple and cost-effective sealing elements, and the durability of the seal increased in relation to that created by known sealing devices in such a way that the entire sealing device is cheaper.
    Type: Application
    Filed: September 10, 2003
    Publication date: May 27, 2004
    Inventors: Karl Keller, Konrad Roeingh