# US 4,392,537 A · Weighbridge and method of producing it > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 4,392,537 A - Document ID: US4392537A - Status: Granted - Kind: A - Application number: 06/274,203 - Filed: 1981-06-15 - Granted: 1983-07-12 - Earliest claimed: 1981-06-15 - Assignees: AB Bofors Elektronik - Inventors: Olle G. Lundborg - Web page: https://patentgrep.com/patent/US4392537A ## CPC - G01G 19/02: for weighing wheeled or rolling bodies, e.g. vehicles - G01G: WEIGHING (sorting by weighing B07C5/16) ## Abstract The present invention relates to a weighbridge consisting at least partially of cast concrete portions, and a method of producing such a bridge. With the object of increasing the accuracy of a weighbridge, of facilitating and cheapening the production of a weighbridge, it is proposed according to the present invention that the bridge (1) should be disposed resting against two beams (5) which are disposed along the long sides of the bridge and supported by transmitter members (6), that at least two transverse beams (7) are disposed secured between the longitudinal beams (5) of the bridge, preferably at the short sides of the bridge, that the cast portions of the bridge are surrounded by an edge lining (3) preferably of sheet metal bearing downwards against the tops of the beams (5, 7), and that the cast portions preferably comprise a corrugated or profiled bottom metal sheet (12) resting substantially against the longitudinal beams of the bridge. As a result of the invention, it becomes possible to cast the weighbridge on site above the longitudinal beams, and the mould formed by the edge lining, beams and metal sheets does not have to be removed after the cast concrete has set. (FIG. 2). ## Claims ### Claim 1 A weighbridge, comprising a cast concrete slab (1) and having supporting beams (5) resting upon transmitter members (6) wherein said supporting beams (5) being disposed as longitudinal beams of a metal frame consisting of said longitudinal beams interconnected by transverse beams, said metal frame supporting a preferably corrugated bottom metal sheet (12) of said concrete slab (1), that said concrete slab being in cast connection with said frame (5, 7) on the upper side of the metal bottom sheet and surrounded by a metal edge lining connected to the frame, and that the edge lining (3) is bounded at the top by a T-beam (8, 9), secured to the web (9) of which a metal sheet (10) is disposed at the tops of the beams. ### Claim 2 (depends on 1) A weighbridge as claimed in claim 1 and wherein a plane corrugated metal sheet is used, characterized in that between the plane corrugated metal sheet (12) and the longitudinal beams (5) there is a seal (13) shaped in accordance with the corrugation of the metal sheet (12). ### Claim 3 (depends on 2) A weighbridge as claimed in claim 2, characterized in that the plane corrugated metal sheet (12) is screwed to the longitudinal beams to bring about a compression of the seal (13). ### Claim 4 (depends on 1) A weighbridge as claimed in claim 1, characterized in that a through grating is disposed at least at one part of the bridge. ### Claim 5 (depends on 4) A weighbridge as claimed in claim 4, characterized in that the cast concrete portions are adapted with an inclination in towards the centre, where holes extending through the weighbridge are provided for water to run off. ### Claim 6 (depends on 4) A weighbridge as claimed in claim 4, characterized in that reinforcing irons (11, 17) are secured to the tops of the beams and to the edge lining (3). ### Claim 7 (depends on 1) A method of producing a weighbridge, comprising a cast concrete slab (1) and having supporting beams (5) resting upon transmitter members as claimed in claim 1 characterized in that placed on longitudinal beams placed on transmitter members of the weighbridge and on outer transverse beams connecting the longitudinal beams is an edge lining in sealing cooperation with the tops of the beams, that the upper outer portion of the edge lining is secured to a frame surrounding the weighbridge, that a bottom metal sheet, which is preferably corrugated or profiled, is placed on the beams of the bridge in sealing cooperation with the tops of the beams so as to cover completely the space between the beams at the parts which are to be cast, that reinforcement is possibly inserted in the mould formed by the edge lining, the beams and the metal sheet, that concrete is cast in the mould, after which the upper portion of the edge lining is detached from the frame surrounding the weighbridge after the concrete has set. ### Claim 8 (depends on 7) A method as claimed in claim 7, characterized in that the transverse beams are bolted to the longitudinal beams.