Patents Assigned to Lenhardt Maschinenbau GmbH
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Patent number: 6609611Abstract: A device for conveying insulating glass panes, which are slightly inclined from the perpendicular, is provided with a horizontal conveyor (2) on which the insulating glass panes stand, and with a supporting device (150), which extends above and parallel to the horizontal conveyor (2). The supporting device (15) defines by one or more supporting elements a pane movement plan (16) against which rest the insulating glass panes of the horizontal conveyor (2). The horizontal conveyor (2) has two parallel and synchronously drivable conveying elements (7,8), supporting surfaces (10,11), which are aligned substantially vertical to the pane movement plane (16). The distance of one of the conveying elements (7,8) from the other conveying elements (8,7) is variable. The conveying elements (7,8) are movable independently of one another transverse to the pane movement plane (16).Type: GrantFiled: September 4, 2001Date of Patent: August 26, 2003Assignee: Lenhardt Maschinenbau GmbHInventor: Karl Lenhardt
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Patent number: 6368408Abstract: Device for coating sidewalls or flanks (6) of a spacer frame (7) for insulating glass panes with an adhesive or sealant, in which the spacer frame consists of a plurality of members (8); the device having a conveyor (1) that defines a conveying direction (2) and on which one of said members (8) of the spacer frame (7) is laid down to be conveyed by said conveyor (1); a support (9) provided above the conveyor (1) for supporting those members (8) of the spacer frame (7) that project upwardly from the conveyor (1); opposing nozzles (4) provided on both sides of the conveyor (1) for applying said adhesive or sealant to the flanks (6) of the respective member (8) of the spacer frame (7) laid down on the conveyor (1); and guide rolls (10, 10a, 11, 11a) located above the conveyor (1) that guide the respective member (8) of the spacer frame (7) laid down on the conveyor (1) by bearing against both flanks (6) of this member (8) with their outer circumferential surface (20), or at least with an edge of said circumferenType: GrantFiled: October 26, 1999Date of Patent: April 9, 2002Assignee: Lenhardt Maschinenbau GmbHInventor: Peter Schuler
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Patent number: 6234355Abstract: The invention describes a machine for filling the edge joint of insulating glass panes with a semi-liquid to paste-like sealing compound, consisting of a main constituent and a secondary constituent, which are different in chemical terms and in terms of their viscosity, having two pumps (3, 6) which convey the two constituents from two reservoirs (1, 2) into separate intermediate storage chambers (5, 8), and having separate, synchronously driven volumetric feed metering pumps (14, 19) for conveying the constituents in a predetermined composition to a mixer (16) and then on to a nozzle (17), the nozzle and the mixer belonging to one sub-assembly which is movably mounted as a whole on a frame of the machine.Type: GrantFiled: February 3, 2000Date of Patent: May 22, 2001Assignee: Lenhardt Maschinenbau GmbHInventor: Karl Lenhardt
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Patent number: 5961759Abstract: A method and apparatus for applying a plastic strand (35), as a spacer with a predefined intended thickness (D), onto a glass panel (33) in order to constitute insulating glass panes, by means of a nozzle (17) which is moved along the edge of the glass panel (33) around the latter and thereby deposits the strand (35) emerging from the nozzle (17) onto the glass panel (33) so that the beginning and end of the strand (35) abut one another. The thickness of the strand (35) upon emergence from the nozzle (17) is increased, at the beginning of a segment with a defined length (L), from zero to the intended thickness (D); and in complementary fashion thereto, at the end of the strand (35) is decreased over the same length from the intended thickness (D) to zero.Type: GrantFiled: March 21, 1997Date of Patent: October 5, 1999Assignee: Lenhardt Maschinenbau, GmbHInventor: Heinz Schubert
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Patent number: 5762739Abstract: For filling the insulating glass panes with a heavy gas, one of the glass plates (40) which are to constitute the insulating glass pane is only partly joined to she other glass plate (42) before the assembling, particularly in that said one glass plate is bent so that a gaplike opening temporarily remains between the glass plate (40) and the spacer (41) and the interior space of the insulating glass pane can be filled with a heavy gas through said gaplike opening.Type: GrantFiled: October 22, 1996Date of Patent: June 9, 1998Assignee: Lenhardt Maschinenbau GmbHInventors: Karl Lenhardt, Uwe Bogner
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Patent number: 5462199Abstract: The apparatus comprises a buffer container (1) for receiving the pasty substance of high viscosity, a feed line (11), through which the buffer container (1) can be refilled with the substance, a pressure generator (2 to 5), by which the substance in the buffer container (1) can be pressurizes, a nozzle (10), which is close to the buffer container (1), a pressure sensor (43) downstream of the pressure generator, and a controller (44). As a result, the metering rate can exactly be controlled close to the nozzle (10).Type: GrantFiled: December 30, 1993Date of Patent: October 31, 1995Assignee: Lenhardt Maschinenbau GmbHInventor: Karl Lenhardt
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Patent number: 5366574Abstract: For filling the insulating glass panes with a heavy gas, one of the glass plates(40) which are to constitute the insulating glass pane is only partly joined to the other glass plate (42) before the assembling, particularly in that said one glass plate is bent so that a gaplike opening temporarily remains between the glass plate (40) and the spacer (41) and the interior space of the insulating glass pane can be filled with a heavy gas through said gaplike opening.Type: GrantFiled: November 5, 1990Date of Patent: November 22, 1994Assignee: Lenhardt Maschinenbau GmbHInventors: Karl Lenhardt, Uwe Bogner
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Patent number: 5350469Abstract: To fill insulating glass panes with a heavy gas, one of the glass plates (40) of which the insulating glass pane is formed is initially only partly joined to the other glass plate (42) during assembly and to that end is flexed along one edge so that a gap is temporarily left between the glass plate (40) and the spacer (41) and a heavy gas can be introduced through that gap to fill the interior space of the insulating gas pane.Type: GrantFiled: January 20, 1993Date of Patent: September 27, 1994Assignee: Lenhardt Maschinenbau GmbHInventors: Karl Lenhardt, Uwe Bogner
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Patent number: 5332080Abstract: The apparatus comprises a horizontal conveyor (2), which comprises an endless conveying element (5) having supporting surfaces (11, 12 ), on which the insulating glass panes (20) stand. Backing means (16) for the insulating glass panes (20) extend above the horizontal conveyor and define a plane of travel (34) for the panes. The horizontal conveyor (8) is displaceable in a direction which is at right angles to the direction of conveyance and parallel to that one supporting surface (11), which is adjacent to the plane of travel for the panes.Type: GrantFiled: March 19, 1993Date of Patent: July 26, 1994Assignee: Lenhardt Maschinenbau GmbHInventors: Karl Lenhardt, Rudolf Bernhardt
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Patent number: 5319186Abstract: The apparatus comprises a horizontal conveyor (1), on which the glass panes (4) are conveyed while they are supported by backing means (2), which by their supporting forward surface define a plane of pane travel (3), a tool (18) for processing the glass panes (4) along their edge and a drive motor for displaying the tool (18) in a direction which is parallel to the plane of pane travel (3) and transverse to the direction of travel (5). For a control of the movement of the tool (18), electronic line cameras (8) are provided, which are so directed toward the plane of pane travel (3) that their scanning lines extend in or parallel to the plane of pane travel and at right angles to the direction of travel (5). For measuring the distance traveled, a displacement pick-up (15) is provided, which is synchronized with the horizontal conveyor (1). The signals from the line cameras (8) and from the displacement pickup (15) are delivered to an evaluating computer (16) for controlling the tool (18).Type: GrantFiled: March 2, 1993Date of Patent: June 7, 1994Assignee: Lenhardt Maschinenbau GmbHInventor: Karl Lenhardt
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Patent number: 5051145Abstract: The apparatus serves for a slipless conveyance of two coextensive parallel plates, which are in register and transversely spaced apart and supported on those broadsides which are remote from each other in respective planes of travel. The apparatus comprises at least two vacuum-applying conveyors, which are adapted to be driven in synchronism in a direction of travel and extend parallel to each other and are disposed opposite to each other and transversely spaced apart and are adapted to contact said plates on those broadsides which are remote from each other and to convey said plates in said direction of travel.Type: GrantFiled: March 16, 1990Date of Patent: September 24, 1991Assignee: Lenhardt Maschinenbau GmbHInventor: Karl Lenhardt
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Patent number: 5027941Abstract: The apparatus comprises a bottom edge supporting conveyor and an inclined planar supporting wall. The supporting wall is formed along its bottom edge with a plurality of air exit slots, which are arranged in a row and receive air from a fan. Additional air exit openings are spaced a substantial distance above the slots and together with the slots produce an air cushion, on which glass plates can slide along the supporting wall without contacting the latter.Type: GrantFiled: May 1, 1990Date of Patent: July 2, 1991Assignee: Lenhardt Maschinenbau GmbHInventor: Karl Lenhardt
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Patent number: 4911779Abstract: The apparatus serves for a slipless conveyance of two coextensive parallel plates, which are in register and transversely spaced apart and supported on those broadsides which are remote from each other in respective planes of travel. The apparatus comprises at least two vacuum-applying conveyors, which are adapted to be driven in synchronism in a direction of travel and extend parallel to each other and are disposed opposite to each other and transversely spaced apart and are adapted to contact said plates on those broadsides which are remote from each other and to convey said plates in said direction of travel.Type: GrantFiled: October 31, 1986Date of Patent: March 27, 1990Assignee: Lenhardt Maschinenbau GmbHInventor: Karl Lenhardt
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Patent number: 4866832Abstract: A process is described in which a tubular bar (27) which is substantially but not entirely filled with flowable solids (28), is closed at one end. To close the tubular bar (27) at its end, a thread (3) is introduced into the tubular bar (27) and is caused to form a ball of thread therein. The thread (3) is preferably introduced into the tubular bar by being blown through a hollow needle (11).Type: GrantFiled: September 23, 1987Date of Patent: September 19, 1989Assignees: Lenhardt Maschinenbau GmbH, Manfred WeinbrechtInventors: Karl Lenhardt, Manfred Weinbrecht
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Patent number: 4826547Abstract: A procedure that, with the help of at least one sealing nozzle (7) and at least one covering and stripping plate (10), permits the defect-free and bubble free filling of panes of insulating glass (1) with a paste-like sealing mass, even in the corner areas, is described.Type: GrantFiled: August 31, 1987Date of Patent: May 2, 1989Assignee: Lenhardt Maschinenbau GmbHInventor: Karl Lenhardt
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Patent number: 4803764Abstract: A process is disclosed in which a rectangular spacer frame (16) for insulating glass is automatically manufactured in that a tubular bar is repeatedly bent in a common bending plane (5) and its free ends (19, 20) are joined. One or both end portions of the tubular bar are deflected out of the bending plane (5) during the final bending operation so that the free ends (19, 20) are moved to such positions that said extremities are laterally spaced apart and extend alongside each other. The end portions (17, 18) of the tubular bar are then gripped and moved to positions in which they are axially aligned and spaced apart. The free ends of said end portions are subsequently joined to each other to form the spacer frame (16), which is subsequently transferred to an overhead conveyor (69) in an automatic operation.Type: GrantFiled: June 17, 1987Date of Patent: February 14, 1989Assignee: Lenhardt Maschinenbau GmbHInventors: Karl Lenhardt, Uwe Bogner
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Patent number: 4804081Abstract: The apparatus comprises a vacuum channel (15), and two parallel endless belts (3), which extend on opposite sides of said vacuum channel. The working courses (3a) of said belts have forward surfaces which extend substantially in a common plane (6). The belts (3) are synchronously driven in the same direction. The vacuum channel is provided on the forward side of an elongate carrier (1) and communicates through at least one suction port (21) with a vacuum source. The working course (3a) of each of said belts (3) is in contact on the rear with backing rollers (14).Type: GrantFiled: October 31, 1986Date of Patent: February 14, 1989Assignee: Lenhardt Maschinenbau GmbHInventor: Karl Lenhardt
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Patent number: 4774738Abstract: The glass plate washing machine has a horizontal conveyor which comprises glass-plate supporting elements, which define a glass-plate travel plane, to support the glass plates over one of their two large faces during passage through the washing machine. Disposed at each side of the glass-plate travel plane are two sets of brush rollers which are driven and the axes of which extend transversely to the direction of travel of the horizontal conveyor, the spacing between the two sets of the brush rollers, which are mounted in front of and in back of the glass-plate travel plane, from the glass-plate travel plane, being variable, wherein one set of brush rollers is movable with respect to the other set of brushes to accommodate different thicknesses of glass-plate. The brush rollers in said movable set are adjustable individually and are driven individually.Type: GrantFiled: August 27, 1986Date of Patent: October 4, 1988Assignee: Lenhardt Maschinenbau GmbHInventor: Karl Lenhardt
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Patent number: 4726875Abstract: A spacer (55) on a device for connecting two glass plates (31, 32) to form an edge-bonded insulating-glass pane by injecting a strand (67) of an initially pasty and subsequently solidifying material, adhering to the two glass plates (31, 32), over the entire periphery along the edge of the pane into the gap between the two glass plates held at a distance from one another is described. The spacer (55) has two rollers (70, 71) which are arranged next to one another with axes of rotation parallel to one another and to the pane running plane (10) and at right angles to the determined direction (III) of the relative movement between the nozzle (36) and the glass plates (31, 32) and of which one (70) is intended to rest against the inner surface of one glass plate (32) and the other (71) is intended to rest against the inner surface of the other glass plate (31).Type: GrantFiled: October 31, 1986Date of Patent: February 23, 1988Assignee: Lenhardt Maschinenbau GmbHInventor: Karl Lenhardt
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Patent number: 4708762Abstract: This apparatus includes a horizontal conveyor (3, 4) that has separate supporting elements (9; 11, 12) to support the two panes of glass (31, 32), some of which define a plane of movement of the panes (10), whereas the others define a plane that is parallel to this, and which can be moved out of engagement with the pane of glass (31) that is arranged at a distance from the plane of movement of the panes (10), this being done either synchronously or in groups. In order to inject a paste-like material between the two panes of glass (31, 32) there is at least one nozzle (36) which can be moved parallel to the plane of movement of the panes (10) transversely to the direction of movement (x) of the horizontal conveyor (3, 4). A separator that precedes the nozzle orifices of the nozzle (36) at a constant distance is provided, this penetrating into the space between the two panes of glass (31, 32).Type: GrantFiled: August 15, 1986Date of Patent: November 24, 1987Assignee: Lenhardt Maschinenbau GmbHInventor: Karl Lenhardt