# US 6,720,693 B2 · Fluid management system for a housing of an electrical device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 6,720,693 B2 - Document ID: US6720693B2 - Status: Granted - Kind: B2 - Application number: 10/202,195 - Filed: 2002-07-24 - Published: 2004-01-29 - Granted: 2004-04-13 - Earliest claimed: 2002-07-24 - Assignees: Emerson Electric Co. - Inventors: Daniel E. Bailey; Nathan C. Owen; Phillip S. Johnson; Barry M. Newberg - Web page: https://patentgrep.com/patent/US6720693B2 ## CPC - H02K 9/06: with fans or impellers driven by the machine shaft - H02K 5/10: with arrangements for protection from ingress, e.g. water or fingers - H02K 5/225: {Terminal boxes or connection arrangements (specially adapted for submersible motors H02K5/132)} - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) ## Abstract A fluid management system provided on a housing of an electrical device includes a shelf that covers over electrical connections projecting from the housing and includes an annular flange and an annular diverging portion of the housing exterior surface that direct liquid by gravitation away from the electrical connectors projecting from the housing and away from the vent openings of the housing. ## Claims ### Claim 1 A housing of an electrical device that is designed to direct liquid by gravitation over an exterior surface of the housing, the housing comprising: a top wall having an exterior surface with an outer peripheral edge and a center shaft hole, the shaft hole having a center axis that defines mutually perpendicular axial and radial directions relative to the housing; a bottom wall spaced axially below the top wall, the bottom wall having an exterior surface with an outer peripheral edge; a side wall extending axially between the top wall and the bottom wall and together with the top wall and the bottom wall enclosing an interior volume of the housing; at least one electrical connector projecting radially outwardly from the side wall; a shelf projecting radially outwardly from the top wall and positioned axially above the at least one electrical connector; and, the shelf having a distal edge positioned radially outwardly from the side wall and a ridge projecting axially upwardly from the shelf distal edge. ### Claim 2 (depends on 1) The housing of claim 1, further comprising: the ridge being positioned radially outwardly from the electrical connector. ### Claim 3 A housing of an electrical device that is designed to direct liquid by gravitation over an exterior surface of the housing, the housing comprising: a top wall having an exterior surface with an outer peripheral edge and a center shaft hole, the shaft hole having a center axis that defines mutually perpendicular axial and radial directions relative to the housing; a bottom wall spaced axially below the top wall, the bottom wall having an exterior surface with an outer peripheral edge; a side wall extending axially between the top wall and the bottom wall and together with the top wall and the bottom wall enclosing an interior volume of the housing; at least one electrical connector projecting radially outwardly from the side wall; a shelf projecting radially outwardly from the top wall and positioned axially above the at least one electrical connector; and, the shelf having opposite top and bottom surfaces, the at least one electrical connector being positioned beneath the shelf bottom surface and a ridge projecting upwardly from the shelf top surface. ### Claim 4 A housing of an electrical device that is designed to direct liquid by gravitation over an exterior surface of the housing, the housing comprising: a top wall having an exterior surface with an outer peripheral edge and center shaft hole, the shaft hole having a center axis that defines mutually perpendicular axial and radial directions relative to the housing; a bottom wall spaced axially below the top wall, the bottom wall having an exterior surface with an outer peripheral edge; a side wall extending axially between the top wall and the bottom wall and together with the top wall and the bottom wall enclosing an interior volume of the housing; at least one electrical connector projecting radially outwardly from the side wall; a shelf on the top wall, the shelf projecting radially outwardly from the top wall and positioned axially above the at least one electrical connector; and, the shelf completely covering over the at least one electrical connector. ### Claim 5 (depends on 4) The housing of claim 4, further comprising: the shelf having a distal edge positioned radially outwardly from the side wall and a pair of side edges that extend radially outwardly from the side wall to the shelf distal edge, and the at least one electrical connector being positioned between the pair of side edges. ### Claim 6 (depends on 4) The housing of claim 4, further comprising: a pair of side panels extending axially downwardly from the shelf with the pair of side panels being positioned on opposite sides of the at least one electrical connector. ### Claim 7 A housing of an electrical device that is designed to direct liquid by gravitation over an exterior surface of the housing, the housing comprising: a top wall having an exterior surface with an outer peripheral edge and a center shaft hole, the shaft hole having a center axis that defines mutually perpendicular axial and radial directions relative to the housing; a bottom wall spaced axially below the top wall, the bottom wall having an exterior surface with an outer peripheral edge; a side wall extending axially between the top wall and the bottom wall and together with the top wall and the bottom wall enclosing an interior volume of the housing; at least one electrical connector projecting radially outwardly from the side wall; a shelf projecting radially outwardly from the top wall and positioned axially above the at least one electrical connector, the shelf having a distal edge positioned radially outwardly from the side wall and a pair of side edges that extend radially outwardly from the side wall to the shelf distal edge, and the at least one electrical connector being positioned between the pair of side edges; and, a pair of side panels extending axially downwardly from the shelf with each side panel extending downwardly from a side edge of the shelf. ### Claim 8 (depends on 7) The housing of claim 7, further comprising: the pair of side panels being positioned on opposite sides of the at least on electrical connector. ### Claim 9 A housing for an electrical device that is designed to direct liquid by gravitation over an exterior surface of the housing, the housing comprising: a top wall having an exterior surface with an outer peripheral edge and a center shaft hole, the shaft hole having a center axis that defines mutually perpendicular axial and radial directions relative to the housing; a bottom wall spaced axially below the top wall, the bottom wall having an exterior surface with an outer peripheral edge; a side wall extending axially between the top wall and the bottom wall and together with the top wall and the bottom wall enclosing an interior volume of the housing, the side wall having at least one vent opening through the side wall; a flange projecting radially outwardly from the side wall in a position axially above the at least one vent opening, the flange having axially opposite top and bottom surfaces and a lip projecting axially downwardly from the flange bottom surface. ### Claim 10 (depends on 9) The housing of claim 9, further comprising: the lip being positioned on the flange bottom surface spaced radially outwardly from the side wall leaving an annular gap between the lip and side wall. ### Claim 11 (depends on 9) The housing of claim 9, further comprising: the lip extending completely around the side wall. ### Claim 12 A housing for an electrical device that is designed to direct liquid by gravitation over an exterior surface of the housing, the housing comprising: a top wall having an exterior surface with an outer peripheral edge and a center shaft hole, the shaft hole having a center axis that defines mutually perpendicular axial and radial directions relative to the housing; a bottom wall spaced axially below the top wall, the bottom wall having an exterior surface with an outer peripheral edge; a side wall extending axially between the top wall and the bottom wall and together with the top wall and the bottom wall enclosing an interior volume of the housing, the side wall having at least one vent opening through the side wall; a flange projecting radially outwardly from the side wall in a position axially above the at least one vent opening; the at least one vent opening being one of a plurality of vent openings that are spatially arranged around the side wall and the flange being an annular flange that extends completely around the side wall over the plurality of vent openings; and, the flange having axially Opposite top and bottom surfaces and a lip projecting downwardly from the flange bottom surface and extending completely around the side wall. ### Claim 13 (depends on 12) The housing of claim 12, further comprising: the lip being positioned on the flange bottom surface spaced radially outwardly from the side wall. ### Claim 14 A housing for an electrical device that is designed to direct liquid by gravitation over an exterior surface of the housing, the housing comprising: a top wall having an exterior surface with an outer peripheral edge and a center shaft hole, the shaft hole having a center axis that defines mutually perpendicular axial and radial directions relative to the housing; a bottom wall spaced axially below the top wall, the bottom wall having an exterior surface with an outer peripheral edge; a side wall extending axially between the top wall and the bottom wall and together with the top wall and bottom wall enclosing an interior volume of the housing, the side wall having at least one vent opening through the side wall, the side wall having an exterior surface portion with a bottom edge axially above and spaced radially outwardly from the at least one vent opening and the exterior surface portion diverging radially outwardly as the exterior surface portion extends axially downwardly toward the at least one vent opening. ### Claim 15 (depends on 14) The housing of claim 14, further comprising: the at least one vent opening being one of a plurality of vent openings through the side wall, the plurality of vent openings being spatially arranged around the side wall and the side wall exterior surface portion extending completely around the side wall in a position axially above the plurality of vent openings. ### Claim 16 (depends on 15) The housing of claim 15, further comprising: the side wall having an underside surface positioned axially below the side wall exterior surface portion and the underside surface extending axially upwardly and radially inwardly from the side wall exterior surface portion toward the plurality of vent openings. ### Claim 17 A housing for an electrical device that is designed to direct liquid by gravitation over an exterior surface of the housing, the housing comprising: a top wall having an exterior surface with an outer peripheral edge and a center shaft hole, the shaft hole having a center axis that defines mutually perpendicular axial and radial directions relative to the housing; a bottom wall spaced axially below the top wall, the bottom wall having an exterior surface with an outer peripheral edge; a side wall extending axially between the top wall and the bottom wall and together with the top wall and bottom wall enclosing an interior volume of the housing, the side wall having at least one vent opening through the side wall, the side wall having an exterior surface portion axially above the at least one vent opening and the exterior surface portion diverging radially outwardly as the exterior surface portion extends axially downwardly toward the at least one vent opening; the side wall having an underside surface positioned axially below the side wall exterior surface portion and the underside surface extending axially upwardly and radially inwardly from the side wall exterior surface portion toward the at lease one vent opening. ### Claim 18 (depends on 17) The housing of claim 17, further comprising: the underside surface being positioned axially above the at least one vent opening and extending completely around the side wall. ### Claim 19 (depends on 16) The housing of claim 16, further comprising: the underside surface being positioned axially above the plurality of vent opening and extending completely around the side wall.