# US 11,999,603 B2 · Forklift scale sensor attachment and mounting > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,999,603 B2 - Document ID: US11999603B2 - Status: Granted - Kind: B2 - Application number: 17/585,915 - Filed: 2022-01-27 - Published: 2022-08-25 - Granted: 2024-06-04 - Earliest claimed: 2021-02-25 - Assignees: Illinois Tool Works Inc. - Applicants: Illinois Tool Works Inc. - Inventors: Andrew Sukalski; Thomas Howard Johnson; Kevin Detert; Cory Hainy; Eric Holland - Web page: https://patentgrep.com/patent/US11999603B2 ## CPC - B66F 17/003: {for fork-lift trucks} - B66F 9/08: Masts; Guides; Chains - B66F: HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD ({invalid lifting devices A61G7/10; } mounting artificial islands on piles or like supports E02B17/00; scaffolding combined with lifting devices E04G1/22; lifting devices for sliding forms E04G11/24; lifting of buildings E04G23/06; shores or struts E04G25/00; lifts or other hoisting devices on ladders E06C7/12; props for mining E21D15/00) ## Abstract The present disclosure provides a lift truck attachment system that includes a lift truck weighing device with a carriage mounted scale configured to support load handling fixtures and to be secured to a lift truck carriage. The weighing device includes one or more sensors arranged at a mounting interface between the lift truck carriage and the carriage mounted scale. The lift truck weighing device includes one or more of rails, plates, and/or mounting brackets, as a list of non-limiting examples, arranged at the interface with the one or more sensors, which measure a load from the load handling fixtures. ## Claims ### Claim 1 A lift truck carriage comprising one or more rails, each rail comprising: a fixture mount to support one or more load handling fixtures upon a top ridge of the rails such that the load handling fixtures exert a vertical downward force on the rails; and a base portion to house a one or more load sensors configured to measure forces on the one or more rails from the one or more load handling fixtures, wherein the fixture mount has a void at an interface between the base portion and the fixture mount, the void being aligned with the one or more load sensors. ### Claim 2 (depends on 1) The lift truck carriage of claim 1, wherein the one or more load handling fixtures are mounted to a plate supported by the one or more rails. ### Claim 3 (depends on 1) The lift truck carriage of claim 1, wherein the one or more rails is removably secured to the lift truck carriage. ### Claim 4 (depends on 1) The lift truck carriage of claim 1, further comprising two or more support brackets configured to secure the one or more rails in a fixed orientation, and arranged between a pair of masts of a lift truck. ### Claim 5 (depends on 4) The lift truck carriage of claim 4, wherein the one or more rails comprises a first and a second rail, the first rail oriented within the support brackets such that a first fixture mount of the first rail is arranged above a first base portion housing a first load sensor of the one or more load sensors. ### Claim 6 (depends on 5) The lift truck carriage of claim 5, wherein the second rail is oriented within the support brackets such that a second fixture mount of the second rail is arranged laterally to a second base portion housing a second load sensor of the one or more load sensors. ### Claim 7 (depends on 6) The lift truck carriage of claim 6, wherein the second fixture mount is oriented facing opposite a lift truck. ### Claim 8 A lift truck weighing device comprising: a loading plate configured to support one or more load handling fixtures; a mounting plate configured to secure the lift truck weighing device to a lift truck carriage; one or more sensor plates arranged between the loading plate and the mounting plate, the one or more sensor plates being secured to the loading plate at a first portion and secured to the mounting plate at a second portion; and one or more sensors arranged on the one or more sensor plates between the first and second portions, the one or more sensors configured to measure forces transferred from the loading plate to the mounting plate through the one or more sensor plates. ### Claim 9 (depends on 8) The lift truck weighing device of claim 8, wherein a first sensor of the one or more sensors is arranged on an upper portion of a first sensor plate of the one or more sensor plates, and a second sensor of the one or more sensors is arranged on a lower portion of the first sensor plate. ### Claim 10 (depends on 8) The lift truck weighing device of claim 8, wherein the one or more sensor plates comprises one or more voids configured to house the one or more sensors. ### Claim 11 (depends on 10) The lift truck weighing device of claim 10, wherein a void of the one or more voids is arranged between the first and second portions of the one or more sensor plates. ### Claim 12 (depends on 8) The lift truck weighing device of claim 8, wherein the one or more sensor plates further comprises a third portion adjacent the second portion and opposite the first portion. ### Claim 13 (depends on 12) The lift truck weighing device of claim 12, wherein a sensor of the one or more sensors is arranged between the second and third portions of the one or more sensor plates. ### Claim 14 (depends on 13) The lift truck weighing device of claim 13, wherein the one or more sensor plates are secured to the loading plate at the third portion of the one or more sensor plates. ### Claim 15 (depends on 8) The lift truck weighing device of claim 8, wherein the one or more sensors is one or more of a strain gauge, a piezoelectric crystal, a displacement transducer, an accelerometer, an inclinometer or tilt sensor, a vibrating beam sensor, a fiber optic sensor, or a resonator. ### Claim 16 (depends on 1) The lift truck lift truck carriage of claim 1, wherein the one or more load sensors is one or more of a strain gauge, a piezoelectric crystal, a displacement transducer, an accelerometer, an inclinometer or tilt sensor, a vibrating beam sensor, a fiber optic sensor, or a resonator.