# US 5,390,811 A · Wafer basket for containing semiconductor wafers > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,390,811 A - Document ID: US5390811A - Status: Granted - Kind: A - Application number: 08/205,770 - Filed: 1994-03-04 - Granted: 1995-02-21 - Earliest claimed: 1991-08-30 - Assignees: Shin-Etsu Handotai Co., Ltd.; Shin-Etsu Polymer Co., Ltd. - Inventors: Nobuyoshi Ogino; Toshitsugu Yajima - Web page: https://patentgrep.com/patent/US5390811A ## CPC - H10P 72/1914: {characterised by locking systems} - B65D 21/0223: {the closure and the bottom presenting local co-operating elements, e.g. projections and recesses (B65D21/0222 takes precedence)} - B65D 43/0212: {only on the outside, or a part turned to the outside, of the mouth (B65D43/0206 takes precedence)} - H10P 72/1918: {characterised by coupling elements, kinematic members, handles or elements to be externally gripped} - B65D 2543/00194: square or rectangular - B65D 2543/00296: Plastic - B65D 2543/00518: Skirt - B65D 2543/00537: on the outside, or a part turned to the outside of the mouth of the container - B65D 2543/00555: on both the inside and the outside - B65D 2543/00574: secured locally, i.e. a lot less than half the periphery - B65D 2543/00629: Massive bead - B65D 2543/00694: Segments - B65D 2543/00759: Flange or lip - B65D 2543/00777: Hole - B65D 2543/00805: Segments - B65D 2543/00888: by applying lever forces - B65D 2543/00972: Collars or rings - H10P: GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10 - B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES ## Abstract A wafer basket which is provided with a new type of locking and unlocking device for locking the top lid to the main body of the outer box and unlocking the same, wherein it is possible to unlock it by merely pressing a part of the locking and unlocking device inwardly; furthermore, the top lid and the bottom of the main body are shaped such that they fit and engage with each other. ## Claims ### Claim 1 A container for semiconductor wafers comprising an outer box having a main body with sides and a lid having a peripheral brim surrounding a portion of said sides of said main body when said lid is placed on said main body, said lid being further adapted to fit on an edge of said sides of said main body, at least one side of at least one of said main body and said lid having a click boss integrally formed therewith, a corresponding side of the other of said main body and said lid having a hook means integrally formed therewith for engaging said click boss, at least one of said click boss and said hook means including means for causing engagement of said hook means and said click boss when said lid is fitted on sid main body, and a means located at a periphery of said container for disengaging said hook means from said click boss when an inward force is applied to said hook means, said means for disengaging said hook means from said click boss including fulcrum boss member, integrally formed with at least one of said main body and said lid at a location adjacent said hook means, for causing outward motion of a portion of said hook means in response to said inward force. ### Claim 2 (depends on 1) A container as recited in claim 1, wherein said hook means includes a resilient engagement tongue for engaging said click boss. ### Claim 3 (depends on 2) A container as recited in claim 2, wherein said fulcrum boss is located to engage said hook means at the approximate mid-point of said resilient tongue. ### Claim 4 (depends on 1) A container as recited in claim 1, wherein said fulcrum boss is integrally formed with said at least one of said main body and said lid at a location spaced from said click boss. ### Claim 5 (depends on 1) A container as recited in claim 1, wherein said click boss has a face for engagement by said hook means and said means for causing engagement includes a sloped surface of said click boss forming an angle with said face for engagement by said hook means. ### Claim 6 (depends on 5) A container as recited in claim 5, wherein said angle is approximately 80.degree.. ### Claim 7 (depends on 1) A container as recited in claim 1, wherein a pair of said hook means are provided on at least one side of said peripheral brim of said lid and a pair of click bosses are provided on a corresponding side of said main body for engagement by respective ones of said hook means. ### Claim 8 (depends on 1) A container as recited in claim 1 wherein a bottom of said main body and a top of said lid are shaped to fit with and engage each other. ### Claim 9 A container for semiconductor wafers comprising an outer box having a main body with sides and a lid having a peripheral brim surrounding a portion of said sides of said main body when said lid is placed on said main body, said lid being further adapted to fit on an edge of said sides of said main body, at least one side of at least one of said main body and said lid having a click boss integrally formed therewith, a corresponding side of the other of said main body and said lid having a hook means integrally formed therewith for engaging said click boss, at least one of said click boss and said hook means including means for causing engagement of said hook means and said click boss when said lid is fitted on said main body, and a means located at a periphery of said container for disengaging said hook means from said click boss when an inward force is applied to said hook means, said means for disengaging said hook means from said click boss including a fulcrum boss integrally formed with at least one of said main body and said lid at a location adjacent said hook means whereby a portion of said hook means is forced outwardly by said inward force, wherein said hook means includes a resilient engagement tongue for engaging said click boss, and wherein said fulcrum boss is located to engage said hook means at the approximate mid-point of said resilient tongue.