# US 10,772,226 B2 · Waterproof cover > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,772,226 B2 - Document ID: US10772226B2 - Status: Granted - Kind: B2 - Application number: 15/937,055 - Filed: 2018-03-27 - Published: 2019-10-03 - Granted: 2020-09-08 - Earliest claimed: 2018-03-27 - Assignees: Otis Elevator Company - Applicants: Otis Elevator Company - Inventors: Shizhong Zhou; Gang Xing; LongWen Wang - Web page: https://patentgrep.com/patent/US10772226B2 ## CPC - H05K 7/20181: {Filters; Louvers} - B01D 46/0043: {containing fixed gas displacement elements or cores} - H05K 5/0217: {Mechanical details of casings (covers, lids, hoods or members for covering apertures H05K5/03)} - H05K 5/03: Covers - B01D 2279/45: for electronic devices, e.g. computers, hard-discs, mobile phones - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) ## Abstract An additional cover provides a cabinet with protection from fluidic ingress. The additional cover includes first and second portions having first and second main sections, respectively, and first and second flanges, respectively, and first and second sidewalls extending between corresponding sidelong edges of at least the first and second main sections. The first and second portions and the first and second sidewalls are arranged to define a flow passage with an inlet at an upper end thereof and an outlet at a lower end thereof. The first and second flanges are provided at the inlet and outlet, respectively, to prevent fluid flow through the flow passage. ## Claims ### Claim 1 An additional cover for providing a cabinet with protection from fluidic ingress, the additional cover comprising: first and second portions having first and second main sections, respectively, and first and second flanges, respectively; and first and second sidewalls extending between corresponding sidelong edges of at least the first and second main sections, the first and second portions and the first and second sidewalls being arranged to define a flow passage with an inlet at an upper end thereof and an outlet at a lower end thereof, the first and second flanges being provided at the inlet and outlet, respectively, to prevent fluid flow through the flow passage, wherein: respective upper edges of the first and second portions and the first and second sidewalls form the inlet and the first flange extends from the upper edge of the first portion and forms an acute angle with the first portion at the inlet, and a lower edge of the second portion terminates above a lower edge of the first portion, the second flange extends from the lower edge of the second portion and forms an obtuse angle with the second portion above the outlet, and respective lower edges of the first portion, the second flange and the first and second sidewalls form the outlet. ### Claim 2 (depends on 1) The additional cover according to claim 1, wherein respective upper edges of the first and second portions and the first and second sidewalls are registerable with a lower end of a frame cover defining an upper passage leading to the inlet of the flow passage. ### Claim 3 (depends on 2) The additional cover according to claim 2, wherein the respective upper edges are formed to encompass the lower end of the frame cover. ### Claim 4 (depends on 1) The additional cover according to claim 1, wherein respective interior edges of the first and second flanges do not overlap across the flow passage. ### Claim 5 (depends on 1) The additional cover according to claim 1, wherein the first and second sidewalls taper inwardly while extending from the first portion to the second portion. ### Claim 6 (depends on 1) The additional cover according to claim 1, further comprising at least one of a mounting surface and a weld coupled to the first portion. ### Claim 7 An electric cabinet, comprising: an exterior wall defining an opening; a frame cover disposed about the opening to define an upper passage and to direct fluid flow moving through the opening downward through the upper passage; and an additional cover, which is attachable to a lower end of the frame cover to provide the electric cabinet with protection against fluidic ingress from an exterior of the frame cover and the additional cover, through an interior of the additional cover and into an interior of the frame cover, wherein the additional cover comprises: first and second portions having first and second main sections, respectively, and first and second flanges, respectively; and first and second sidewalls extending between corresponding sidelong edges of at least the first and second main sections, the first and second portions and the first and second sidewalls being arranged to define a flow passage with an inlet fluidly communicative with the upper passage at an upper end thereof and an outlet at a lower end thereof, and the first and second flanges being provided at the inlet and outlet, respectively, to prevent fluid flow through the flow passage, and wherein: respective upper edges of the first and second portions and the first and second sidewalls form the inlet and the first flange extends from the upper edge of the first portion and forms an acute angle with the first portion at the inlet, and a lower edge of the second portion terminates above a lower edge of the first portion, the second flange extends from the lower edge of the second portion and forms an obtuse angle with the second portion above the outlet, and respective lower edges of the first portion, the second flange and the first and second sidewalls form the outlet. ### Claim 8 (depends on 7) The electric cabinet according to claim 7, further comprising filter media disposable in the opening. ### Claim 9 (depends on 7) The electric cabinet according to claim 7, wherein respective upper edges of the first and second portions and the first and second sidewalls are registerable with the lower end of the frame cover. ### Claim 10 (depends on 9) The electric cabinet according to claim 9, wherein the respective upper edges are formed to encompass the lower end of the frame cover. ### Claim 11 (depends on 7) The electric cabinet according to claim 7, wherein respective interior edges of the first and second flanges do not overlap across the flow passage. ### Claim 12 (depends on 7) The electric cabinet according to claim 7, wherein the first and second sidewalls taper inwardly while extending from the first portion to the second portion. ### Claim 13 (depends on 7) The electric cabinet according to claim 7, further comprising at least one of a mounting surface and a weld coupled to the first portion by which the additional cover is affixable to the exterior wall. ### Claim 14 An electric cabinet, comprising: an exterior wall defining an opening; a frame cover disposed about the opening to define an upper passage and to direct fluid flow moving through the opening downward through the upper passage; and an additional cover for providing at least one of NEMA4 and IPX6 protection, which is attachable to a lower end of the frame cover, the additional cover being formed to define a flow passage fluidly communicative with the upper passage and being configured to form a tortuous path for fluid propagating from an exterior of the additional cover, through the flow passage and toward the upper passage, wherein the additional cover comprises: first and second portions having first and second main sections, respectively, and first and second flanges, respectively; and first and second sidewalls extending between corresponding sidelong edges of at least the first and second main sections, the first and second portions and the first and second sidewalls being arranged to define a flow passage with an inlet fluidly communicative with the upper passage at an upper end thereof and an outlet at a lower end thereof, and the first and second flanges being provided at the inlet and outlet, respectively, to prevent fluid flow through the flow passage, and wherein: respective upper edges of the first and second portions and the first and second sidewalls form the inlet and the first flange extends from the upper edge of the first portion and forms an acute angle with the first portion at the inlet, and a lower edge of the second portion terminates above a lower edge of the first portion, the second flange extends from the lower edge of the second portion and forms an obtuse angle with the second portion above the outlet, and respective lower edges of the first portion, the second flange and the first and second sidewalls form the outlet. ### Claim 15 (depends on 14) The electric cabinet according to claim 14, further comprising filter media disposable in the opening.