# US 10,244,839 B1 · Case with increased device retention from a micro-textured lip > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,244,839 B1 - Document ID: US10244839B1 - Status: Granted - Kind: B1 - Application number: 15/494,207 - Filed: 2017-04-21 - Granted: 2019-04-02 - Earliest claimed: 2016-09-20 - Assignees: Apple Inc. - Applicants: Apple Inc. - Inventors: Joshua A. Hoover - Web page: https://patentgrep.com/patent/US10244839B1 ## CPC - A45C 11/00: Receptacles for purposes not provided for in groups A45C1/00-A45C9/00 (specially adapted for toiletry or cosmetic equipment A45D29/20, A45D44/18; travelling sewing kits A45F3/48) - A45C 11/001: {for storing portable audio devices, e.g. headphones or digital music players} - A45C 11/002: {for storing portable handheld communication devices, e.g. pagers or smart phones} - A45C 11/003: {for storing portable computing devices, e.g. laptops, tablets or calculators} - B29C 51/10: Forming by pressure difference, e.g. vacuum - B29L 2031/3481: {Housings or casings incorporating or embedding electric or electronic elements} - B29L 2031/7162: {Boxes, cartons, cases} - A45C: PURSES; LUGGAGE; HAND CARRIED BAGS - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES ## Abstract According to some embodiments, a case for a portable electronic device is described. The case can include a bottom wall and side walls that cooperate to define a cavity having a size and shape suitable for accommodating the portable electronic device. The side walls can include an edge that defines an opening that leads to the cavity and that allows passage of the portable electronic device into the cavity. At least one of the side walls has a protrusion that extends at an angle into the cavity, and where the protrusion (i) allows insertion of the portable electronic device through the opening and into the cavity, and (ii) hinders movements of the portable electronic device out of the cavity. ## Claims ### Claim 1 A case for a portable electronic device, the case comprising: a bottom wall and side walls that cooperate to define a cavity having a size and shape suitable for accommodating the portable electronic device, wherein the side walls terminate at a first edge that extends from the side walls at a first angle, and the first edge defines an opening that leads to the cavity and that allows passage of the portable electronic device into the cavity; and a securing element that (i) extends from at least one of the side walls and towards the cavity at a second angle and terminates at a second edge different than the first edge, and (ii) is overlaid by the first edge, wherein the second edge of the securing element is capable of contacting an external surface of the portable electronic device carried within the cavity such as to hinder movement of the portable electronic device out of the cavity. ### Claim 2 (depends on 1) The case of claim 1, wherein the securing element originates from an internal surface of the at least one side wall, and the at least one side wall has an inwardly curved cross section. ### Claim 3 (depends on 1) The case of claim 1, wherein two of the side walls are joined by a corner portion. ### Claim 4 (depends on 1) The case of claim 1, wherein the case is formed of any combination of silicone, polyurethane or polyester. ### Claim 5 (depends on 1) The case of claim 1, wherein an upper surface of the first edge is visible from an environment external to the case, and the upper surface also prevents the securing element from being visible from the environment external to the case. ### Claim 6 (depends on 1) The case of claim 1, wherein the first angle is different from the second angle. ### Claim 7 (depends on 1) The case of claim 1, wherein the securing element is a portion of a textured region of the side walls, the textured region having a different texture than the first and second edges. ### Claim 8 (depends on 1) The case of claim 1, wherein when an external force is applied to the side walls, the securing element flexes in such a way so as to hinder the movement of the portable electronic device that is carried within the cavity. ### Claim 9 A shell for retaining a portable electronic device, the shell comprising: a bottom wall and side walls that extend from the bottom wall at a first angle relative to the bottom wall, and the side walls cooperate to define a cavity with a width that is capable of accommodating the portable electronic device, wherein each of the side walls has an undercut cross section such that an upper edge of the side wall (i) is visible from an environment external to the bottom wall and the side walls, and (ii) defines an opening that leads to the cavity, and wherein the opening is less than the width of the cavity; and securing elements that protrude from an interior surface of at least one of the side walls in a direction towards the bottom wall and at a second angle different than the first angle, wherein each of the securing elements is arranged to independently flex at different angles relative to each other such as to hinder movement of the portable electronic device out of the cavity when the securing elements are engaged with an exterior surface of the portable electronic device carried within the cavity, and wherein the undercut cross section prevents the securing elements from being visible from the external environment. ### Claim 10 (depends on 9) The shell of claim 9, wherein two of the side walls are joined by a corner portion, and the corner portion includes an additional securing element that extends towards the bottom wall. ### Claim 11 (depends on 10) The shell of claim 10, wherein the upper edge overlays the securing elements such as to prevent the securing elements from being visible from the external environment. ### Claim 12 (depends on 11) The shell of claim 11, wherein the additional securing element of the corner portion has a shape and size that is different from the securing elements. ### Claim 13 (depends on 9) The shell of claim 9, wherein the shell is formed of any combination of silicone, polyurethane or polyester. ### Claim 14 (depends on 9) The shell of claim 9, wherein the securing elements are integrally formed with the side walls. ### Claim 15 (depends on 9) The shell of claim 9, wherein when an external force is applied to the shell, the securing elements flex in such a way so that the securing elements continue to remain engaged to the exterior surface of the portable electronic device, thereby hindering movement of the portable electronic device out of the cavity. ### Claim 16 (depends on 15) The shell of claim 15, wherein the securing elements are formed of a material having a higher coefficient of friction than a material of the side walls. ### Claim 17 A method for forming a case for an electronic device, the method comprising: shaping a substrate to form a bottom wall and side walls that extend from the bottom wall at a first angle relative to the bottom wall, wherein the side walls terminate at a first edge that extends from the side walls at a first angle, and the first edge defines an opening that leads to a cavity having a size and shape suitable for accommodating the electronic device; and forming a securing element that extends from at least one of the side walls and towards the cavity at a second angle, wherein the securing element terminates at a second edge different than the first edge, and the securing element is overlaid by the first edge, and wherein the second edge of the securing element is capable of contacting an external surface of the electronic device so as to (i) allow insertion of the electronic device through the opening and into the cavity, and (ii) prevent movement of the electronic device out of the cavity. ### Claim 18 (depends on 17) The method of claim 17, wherein the substrate is shaped by a molding operation or a material removal operation. ### Claim 19 (depends on 18) The method of claim 18, wherein the securing element is integrally formed with the side walls. ### Claim 20 (depends on 17) The method of claim 17, wherein the case is formed of any combination of silicone, polyurethane, or polyester.