# US 5,347,840 A · Press comprising a press table and a sliding table > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,347,840 A - Document ID: US5347840A - Status: Granted - Kind: A - Application number: 07/931,203 - Filed: 1992-08-17 - Granted: 1994-09-20 - Earliest claimed: 1992-08-17 - Assignees: L. Schuler GmbH - Inventors: Michael Wolfgang; Lauke Andreas; Fritz Werner - Web page: https://patentgrep.com/patent/US5347840A ## CPC - B30B 15/007: {Means for maintaining the press table, the press platen or the press ram against tilting or deflection} - B21D 5/0272: {Deflection compensating means} - Y10S 72/701: Preventing distortion - B30B: PRESSES IN GENERAL (producing ultra-high pressure or ultra-high pressure and high temperature to effect modifications of a substance, e.g. for making artificial diamonds B01J3/00 ){(compressing means for refuse receptacles B65F1/1405)} - B21D: WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL (working or processing of wire B21F) - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ## Abstract A materials press comprising a press table and a sliding table. The contact surfaces between the press table and the sliding table have surface contours which conform to a bending line which would occur in a planar press table when it is placed under a load. ## Claims ### Claim 1 A press comprising: at least one upwardly and downwardly displaceable press slide adapted to hold a top tool element for forming of materials by pressing at least one stationary press table; at least one sliding table adapted to hold a bottom tool element for forming of materials by pressing, said at least one sliding table having first bearing walls which are supported on second bearing walls of the press table; and contact surfaces arranged on said first and second bearing walls between said at least one press table and said at least one sliding table, wherein at least one of the contact surfaces has a curved surface contour which conforms to a surface contour of the press table when the press table is in a loaded state. ### Claim 2 (depends on 1) A press according to claim 1, wherein said at least one sliding table is movable into and out of said press to permit a change of tools. ### Claim 3 (depends on 1) A press according to claim 1, wherein the contact surface associated with said at least one sliding table has said curved surface contour. ### Claim 4 (depends on 1) A press according to claim 1, wherein the contact surface associated with said at least one press table has said curved surface contour. ### Claim 5 (depends on 1) A press according to claim 1, wherein the contact surface associated with each of said at least one sliding table and said at least one press table has a curved surface contour. ### Claim 6 (depends on 1) A press according to claim 1, wherein at least one first supporting device, an upward extent of which can be adjusted by means of a control, is arranged in the respective corner areas of the at least one sliding table between the at least one press table and the at least one sliding table. ### Claim 7 (depends on 1) A press according to claim 1, wherein second supporting devices, an upward extent of which can be adjusted by means of a control, are arranged between the at least one press table and the at least one of sliding table. ### Claim 8 (depends on 6) A press according to claim 6, wherein second supporting devices, an upward extent of which can be adjusted by means of a control, are arranged between the at least one press table and the at least one of sliding table. ### Claim 9 A press comprising: at least one upwardly and downwardly displaceable press slide adapted to hold a top tool element for forming of materials by pressing; at least one stationary press table; and at least one sliding table adapted to hold a bottom tool element for forming of materials by pressing, said at least one sliding table having first bearing walls which are supported on second bearing walls of the press table, said sliding table having a central area located substantially equidistantly from corners of said sliding table; contact surfaces arranged on the first and second bearing walls between said at least one press table and said at least one sliding table; wherein supporting devices, an upward extent of which can be adjusted by means of a control, are arranged in the central area of said at least one sliding table and act between the press table and the sliding table. ### Claim 10 (depends on 9) A press according to claim 9, wherein the contact surfaces are planar surfaces in an unloaded state. ### Claim 11 (depends on 9) A press according to claim 9, wherein at least one of the contact surfaces has a curved surface contour which conforms to a surface contour of the press table when the press table is in a loaded state. ### Claim 12 (depends on 11) A press according to claim 11, wherein said contact surface associated with at least one sliding table has said curved surface contour. ### Claim 13 (depends on 11) A press according to claim 11, wherein said contact surface associated with said at least one press table said curved surface contour. ### Claim 14 (depends on 11) A press according to claim 11, wherein said contact surfaces of said at least one sliding table and said at least one press have said curved surface contour. ### Claim 15 A press comprising: at least one upwardly and downwardly displaceable press slide adapted to hold a top tool element for forming of materials by pressing; at least one stationary press table; and at least one sliding table adapted to hold a bottom tool element for forming of materials by pressing, said at least one sliding table having first bearing walls which are supported on second bearing walls of the press table, said sliding table having a central area located substantially equidistantly from corners of said siding table; contact surfaces arranged on the first and second bearing walls between said at least one press table and said at least one sliding table; wherein supporting devices, an upward extent of which can be adjusted by means of a control, are arranged in the central area of said at least one sliding table and act between the press table and a bottom side of said at least one sliding table. ### Claim 16 (depends on 15) A press according to claim 15, wherein the contact surfaces are planar surfaces in an unloaded state. ### Claim 17 (depends on 15) A press according to claim 15, wherein at least one of the contact surfaces have a curved surface contour when the press is in a loaded state. ### Claim 18 (depends on 17) A press according to claim 17, wherein said contact surface associated with said at least one sliding table has a curved surface contour. ### Claim 19 (depends on 17) A press according to claim 17, wherein said contact surface associated with said at least one press table has a curved surface contour. ### Claim 20 (depends on 17) A press according to claim 17, wherein each of the surfaces of said at least one siding table and said at least one press table has a curved surface contour.