Patents by Inventor Bernhard Keller
Bernhard 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).
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Patent number: 7607835Abstract: A linear guide device has a guide rail system with at least one guide rail, a guide carriage guided on the guide rail system in a guidance direction and including a base unit and legs which partially enclose the guide rail system, the guide carriage being provided with at least one preload-adjustment device via which a preload of the legs of guide carriage against the guide rail system is adjustable, the preload-adjustment device including at least one rod having one end hingedly mounted on one of the legs of the guide carriage and the other end displaceable in a displacement direction, and a displacement device for displacing the other end of the preload adjustment, device in the displacement direction.Type: GrantFiled: January 31, 2007Date of Patent: October 27, 2009Assignee: Robert Bosch GmbHInventors: Bernhard Keller, Roland Hoherz
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Patent number: 7534043Abstract: A linear unit has a substantially rigid housing unit having an engagement slot, a rotor that is received in said housing unit so as to be movable back and forth in a travel direction, the rotor having at least one engagement device which engages the engagement slot in said housing unit in an engagement direction extending substantially orthogonally to the travel direction, the at least one engagement device including not only a contact unit associated with the rotor, but also a strip unit, and means for compensating a position of the strip units relative to the contact unit.Type: GrantFiled: July 17, 2006Date of Patent: May 19, 2009Assignee: Bosch Rexroth Mechatronics GmbHInventor: Bernhard Keller
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Publication number: 20080242522Abstract: A linear unit has a drive unit, a stator, a drive roller connected to the drive unit, a freewheeling roller supported on the stator adjacent to one of longitudinal ends of the stator, the drive belt being wound around the drive roller and around the freewheeling roller, a traveler movable along the stator by the drive belt, the drive belt being connected to the traveler in at least one fastening point, so that a distance between an end of the traveler which is oriented toward an end of the stator associated with the freewheeling roller, and the fastening point situated the closest to the end of the traveler is at least equal to a radius of the freewheeling roller.Type: ApplicationFiled: January 14, 2008Publication date: October 2, 2008Inventors: Bernhard Keller, Roland Hoherz, Sven Anhut
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Publication number: 20080237389Abstract: A linear unit having a main module unit and a drive unit in which the main module unit has a housing with a table part that a drive belt is able to move in the longitudinal direction; the drive belt is wound around a drive roller, which is connected to a drive unit, and around a freewheeling roller; and the drive belt is connected to the table part and is divided into an upper span and a lower span, and a guide element is situated on the base leg of the housing and is able to separate the upper span from the lower span.Type: ApplicationFiled: January 21, 2008Publication date: October 2, 2008Inventors: Bernhard Keller, Roland Hoherz, Sven Anhut
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Publication number: 20080236312Abstract: A bearing unit has a housing and a connecting element that is supported so that it is able to rotate around a rotation axis in the housing and is for producing a non-rotating connection between a drive shaft and a threaded spindle of a screw drive, in which at its end oriented toward the threaded spindle, the connecting element has a recess extending coaxial to the rotation axis for accommodating an end section of the threaded spindle, the end of the connecting element oriented toward the threaded spindle has at least one slot that is narrowable by a element; and a linear unit can be equipped with a bearing unit of this kind.Type: ApplicationFiled: January 17, 2008Publication date: October 2, 2008Inventors: Bernhard Keller, Roland Hoherz
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Publication number: 20080240631Abstract: A movable bearing for supporting a free end of a threaded spindle of a screw drive, which spindle extends in the direction of a longitudinal axis, has a bearing bush that is accommodated in a bearing housing. The bearing bush has at least one projection protruding outward in the radial direction, which engages in an associated recess of the bearing housing.Type: ApplicationFiled: January 21, 2008Publication date: October 2, 2008Inventors: Bernhard Keller, Roland Hoherz
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Publication number: 20080193065Abstract: A linear module has a rail with a longitudinal axis, a table part, and at least one linear guide device; the at least one linear guide device has a main part embodied so that it is integrally joined to the table part, two end caps, and at least one endless roller element circuit. The length of the table part measured in the direction of the longitudinal axis is greater than that of the linear guide device and at least one end cap is accommodated in a recess of the table part; the recess is open toward the underside of the table part and is delimited by the top surface of the table part, by at least one side wall of the table part, and by the main part of the linear guide device.Type: ApplicationFiled: January 14, 2008Publication date: August 14, 2008Inventors: Bernhard Keller, Steffen Pfister
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Publication number: 20070189646Abstract: A linear guide device, comprising a guide rail; a guide carriage displaceable on the guide rail and having at least one rolling body circuit with a circulatory channel for rolling elements and including a running channel, a return channel and two turnaround channels. The guide carriage has a base unit and at least two circulatory assemblies with at least one rolling body circuit and configured to be separate and interconnected only via the base unit. The guide carriage also has at least four recesses with orthogonal end faces, with two end faces on each side of the guide rail pointing in opposite directions.Type: ApplicationFiled: January 19, 2007Publication date: August 16, 2007Inventors: Berthold Koeniger, Bernhard Keller
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Publication number: 20070189647Abstract: A linear guide device has a guide rail system with at least one guide rail, a guide carriage guided on the guide rail system in a guidance direction and including a base unit and legs which partially enclose the guide rail system, the guide carriage being provided with at least one preload-adjustment device via which a preload of the legs of guide carriage against the guide rail system is adjustable, the preload-adjustment device including at least one rod having one end hingedly mounted on one of the legs of the guide carriage and the other end displaceable in a displacement direction, and a displacement device for displacing the other end of the preload adjustment, device in the displacement direction.Type: ApplicationFiled: January 31, 2007Publication date: August 16, 2007Inventors: Bernhard Keller, Roland Hoherz
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Publication number: 20070019893Abstract: A linear unit has a substantially rigid housing unit having an engagement slot, a rotor that is received in said housing unit so as to be movable back and forth in a travel direction, the rotor having at least one engagement device which engages the engagement slot in said housing unit in an engagement direction extending substantially orthogonally to the travel direction, the at least one engagement device including not only a contact unit associated with the rotor, but also a strip unit, and means for compensating a position of the strip units relative to the contact unit.Type: ApplicationFiled: July 17, 2006Publication date: January 25, 2007Inventor: Bernhard Keller
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Publication number: 20040007426Abstract: A linear device (10) includes a driver, which is arranged to be moveable back and forth along a drive track, and at least one lubricating device (28) non-moveably connected with the driver. The lubricating device (28) has at least one lubricating element (32) that is in lubricating contact with the drive track and at least one lubricant reservoir (34). At least one functional device (34) is provided, which maintains the pressure in the lubricant reservoir at a constant value.Type: ApplicationFiled: May 12, 2003Publication date: January 15, 2004Inventors: Bernhard Keller, Rudolf Schlereth, Roland Greubel
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Patent number: 6595327Abstract: A linear motion unit (10) includes a runner that is arranged so as to be movable back and forth on a rod along the rod's axis (S), and at least one lubricating device (28) surrounding the rod at least partially. The lubricating device (28) includes at least one lubricating element (32) that stands in lubricating contact with the rod, and at least one lubricant reservoir (34) that is carried by the runner. In accordance with the invention, the lubricant reservoir (34) is arranged radially outside the lubricating element (32) with respect to the axis (S) of the rod.Type: GrantFiled: May 29, 2001Date of Patent: July 22, 2003Assignee: Rexroth Star GmbHInventor: Bernhard Keller
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Patent number: 6472778Abstract: A linear motion unit (10) includes a runner (14) that is arranged so as to be movable along a rod (12). Provided in front of and/or behind the runner (14) are support units (20) that support the rod (12) relative to a counter-element (18). Provided on the runner (14) and the support units (20) are catches (28) that in each case can be brought into latched engagement with the adjacent support unit (20). The support units (20) are each comprised of a base body (22) upon which is movably mounted a control element (24). The control element (24) can be moved between at least one latched position and at least one released position by means of a control track (30). In accordance with the invention, the control element (24) has at least one control recess (24b).Type: GrantFiled: January 19, 2001Date of Patent: October 29, 2002Assignee: Rexroth Star GmbHInventor: Bernhard Keller
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Publication number: 20010046335Abstract: A linear motion unit (10) includes a runner that is arranged so as to be movable back and forth on a rod along the rod's axis (S), and at least one lubricating device (28) surrounding the rod at least partially. The lubricating device (28) includes at least one lubricating element (32) that stands in lubricating contact with the rod, and at least one lubricant reservoir (34) that is carried by the runner. In accordance with the invention, the lubricant reservoir (34) is arranged radially outside the lubricating element (32) with respect to the axis (S) of the rod.Type: ApplicationFiled: May 29, 2001Publication date: November 29, 2001Inventor: Bernhard Keller
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Publication number: 20010024535Abstract: A linear motion unit (10) includes a runner (14) that is arranged so as to be movable along a rod (12). Provided in front of and/or behind the runner (14) are support units (20) that support the rod (12) relative to a counter-element (18). Provided on the runner (14) and the support units (20) are catches (28) that in each case can be brought into latched engagement with the adjacent support unit (20). The support units (20) are each comprised of a base body (22) upon which is movably mounted a control element (24). The control element (24) can be moved between at least one latched position and at least one released position by means of a control track (30). In accordance with the invention, the control element (24) has at least one control recess (24b).Type: ApplicationFiled: January 19, 2001Publication date: September 27, 2001Inventor: Bernhard Keller
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Patent number: 5868499Abstract: A linear guiding unit comprises a guide housing (10). Inside the guide housing (10) there are provided linear ball bearings by which a carriage (40) is guided. Moreover, a pneumatic drive (56) is accommodated within the guide housing (10). The pneumatic drive comprises a cylinder cavity (58) inside the guide housing (10). The cylinder cavity (58) accommodates a piston (60). The piston (60) is movable along the cylinder cavity (58). The piston (60) is connected with the carriage (40) by a flexible rope (74). This flexible rope is sealingly passed through cover walls (66) of the cylinder cavity (58). The rope is deviated outside the cylinder cavity (58) and is fixed to the carriage (40). A cover belt (90) different from the rope covers a longitudinal opening (31) of the guide housing (10) through which the carriage can be connected with an object for common axial movement.Type: GrantFiled: September 3, 1997Date of Patent: February 9, 1999Assignee: Deutsche Star GmbHInventors: Roland Greubel, Bernhard Keller, Werner Blaurock
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Patent number: 5845996Abstract: A linear guide unit comprises a hollow elongated member of rectangular cross section, two parallel guide rails mounted on one wall of the elongated member, and at least one runner supported for movement on each of the guide rails. At least one wall of the elongated member other than the one on which the guide rails are mounted has a plurality of T-section grooves, which serve for the fastening of attachments. The runners are U-shaped, straddle the respective guide rails, and are carried on the said guide rails by closed rolling-member circuits. The elongated member may be combined with a variety of linear drive units of different types.Type: GrantFiled: March 21, 1996Date of Patent: December 8, 1998Assignee: Deutsche Star GmbHInventors: Roland Greubel, Bernhard Keller
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Patent number: 5195391Abstract: A generally U-shaped guide carriage is linearly guided on a longitudinally-extending rail track by at least one circuit of roller balls carried by each of the depending flanges of the U-shaped guide carriage. Each ball circuit includes a linear load-bearing row and a linear return row of roller balls. The load-bearing balls bear against facing ball rolling tracks carried by the opposite sides of the rail track. A cross member is connected adjacent one end of the rail track and carries rolling track engagement faces for engaging the ball rolling tracks on the rail track. An entraining unit is connected to the guide carriage, and a linear drive is coupled between the cross member and entraining unit for driving the guide carriage along the rail track. In another embodiment, a common steel insert is carried by each depending flange of the U-shaped guide carriage and supports the load-bearing row or rows of the associated ball circuits.Type: GrantFiled: December 3, 1991Date of Patent: March 23, 1993Assignee: Deutsche Star GmbHInventors: Serge Barbat, Roland Greubel, Bernhard Keller
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Patent number: 5097716Abstract: A guide carriage is guided on a rail track. At the two ends of the rail track, cross-members are mounted. Between the cross-members there extends a drive device. A drive element of the drive device is drivingly connected with the guide carriage. The resultant driving force of the drive device lies outside the longitudinal axis of the rail track. For achieving better acceptance of tilting moments, the guide carriage is guided on the rail track by ball circuits. The rows of supporting balls of the ball circuits bear against rolling tracks, which are formed symmetrically on either side of the longitudinally central plane of the rail track on this track. The force transmission planes of the supporting rows of balls diverge towards the longitudinal plane of symmetry and each make an angle with this plane of approximately 45.degree.. The drive device may, in particular, be mounted laterally of one flange of the U-shaped guide carriage, or above the web of this guide carriage.Type: GrantFiled: October 30, 1989Date of Patent: March 24, 1992Assignee: Deutsche Star GmbHInventors: Serge Barbat, Roland Greubel, Bernhard Keller