# US 10,479,621 B2 · Container search system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,479,621 B2 - Document ID: US10479621B2 - Status: Granted - Kind: B2 - Application number: 15/576,754 - Filed: 2017-02-28 - Published: 2019-01-10 - Granted: 2019-11-19 - Earliest claimed: 2016-03-24 - Assignees: Korea Institute of Ocean Science & Technology - Applicants: Korea Institute of Ocean Science & Technology - Inventors: Jong Won Park; So Young Sung; Jung Hee Lee; Yong Kon Lim - Web page: https://patentgrep.com/patent/US10479621B2 ## CPC - B60L 5/38: for collecting current from conductor rails (B60L5/40 takes precedence) - B60L 13/03: Electric propulsion by linear motors - B60L 15/20: for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed - B61B 13/00: Other railway systems - B65G 49/00: Conveying systems characterised by their application for specified purposes not otherwise provided for - B65G 63/004: {for containers} - G01N 23/04: and forming images of the material - G01V 5/232: {having relative motion between the source, detector and object other than by conveyor (G01V5/226 takes precedence)} - G05D 1/02: Control of position or course in two dimensions - B65G 2201/0294: Vehicle bodies - G01V 5/20: Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - Y02T 10/7072: Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors - Y02T 10/72: Electric energy management in electromobility - Y02T 90/12: Electric charging stations - B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES - B61B: RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR (lifts or hoists, elevators, escalators, moving walkways B66B) - B65G: TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS (packaging B65B; handling thin or filamentary materials, e.g. paper sheets or thread, B65H; cranes B66C; portable mobile or lifting or hauling appliances, e.g. hoists, B66D; devices for lifting or lowering goods for loading or unloading purposes, e.g. fork-lift trucks, B66F9/00; emptying bottles, jars, casks, barrels or similar containers, not otherwise provided for, B67C9/00; delivering or transferring liquids B67D; filling or discharging vessels for liquefied, solidified or compressed gases F17C; pipe-line systems for fluids F17D) - G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q) - G01V: GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS (means for indicating the location of accidentally buried, e.g. snow-buried, persons A63B29/02) - G05D: SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract The present invention relates to a container search system comprising: a radiation irradiation unit for irradiating radiation to a container to be inspected; a detection unit installed opposite to the radiation irradiation unit to detect radiation having passed through a container; a transfer cart for loading an automobile thereon, on which a container to be inspected is loaded, and travelling along a search path formed between the radiation irradiation unit and the detection unit; and a circulation orbit unit formed to allow the transfer cart to circulate along the search path, wherein a primary side of a linear induction motor for generating a moving magnetic field is formed on either side among the transfer cart and the search path and a secondary-side reaction plate for inducing a secondary eddy current due to the moving magnetic field and generating a linear driving force is formed on the other side thereof. The container search system can transfer a transfer cart according to a linear motor scheme in a radiation search section, and thus can obtain a radiation search image of high quality. ## Claims ### Claim 1 A container search system comprising: a radiation irradiator configured to emit radiation toward a container to be inspected; a detector installed opposite the radiation irradiator to detect radiation passed through the container; a transfer cart configured to load a vehicle, which carries the container, and travel along a search path formed between the radiation irradiator and the detector; and a circulation orbit allowing the transfer cart to circulate along the search path, wherein a primary side of a linear induction motor configured to generate a moving magnetic field is formed on one of the transfer cart and the search path, and a secondary-side reaction plate configured to generate a linear driving force by inducing a secondary eddy current due to the moving magnetic field is formed on the other one of the transfer cart and the search path, wherein the transfer cart includes: a LIM part provided in a middle of the transfer cart to extend in a longitudinal direction of the transfer cart, and having the primary side of the linear induction motor formed therein; vehicle wheel seating parts formed to extend from both sides of the LIM part in a transverse direction crossing the longitudinal direction of the LIM part, and the vehicle wheel seating parts are configured to provide an entry region into which wheels of the vehicle carrying the container enter, and having seating grooves in which the wheels of the vehicle are seated; and side parts extending from the vehicle wheel seating parts in the transverse direction, and wherein the side part includes: a plurality of running wheels configured to be run when the LIM part is in a non-driven state; a running wheel driving part configured to drive the running wheels; and a control part configured to control driving of the running wheel driving part. ### Claim 2 (depends on 1) The container search system of claim 1, wherein the side part further includes: a plurality of lifting wheels installed to perform a rolling movement in a direction perpendicular to the longitudinal direction of the LIM part to be used when the transfer cart from departs the circulation orbit; and a lifting unit allowing the side part to ascend or descend with respect to the lifting wheels. ### Claim 3 (depends on 1) The container search system of claim 1, wherein the control part performs control such that the LIM part is operated in the search path on which the secondary-side reaction plate is formed, and controls the running wheel driving part such that the running wheels runs in a return path remaining outside the search path.