# US 2009/0120686 A1 · Electric Power Terminal Feed-Through > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2009/0120686 A1 - Document ID: US20090120686A1 - Status: Published application - Kind: A1 - Application number: 11/988,270 - Filed: 2006-07-05 - Published: 2009-05-14 - Earliest claimed: 2005-07-05 - Assignees: Emerson Electric Co. - Inventors: Franz Dieter Paterek; Albertus Jan Hendrik Kolkman; Scott Schuckmann - Web page: https://patentgrep.com/patent/US20090120686A1 ## CPC - H01R 9/16: Fastening of connecting parts to base or case; Insulating connecting parts from base or case - F04C 23/008: {Hermetic pumps} - H02G 3/22: Installations of cables or lines through walls, floors or ceilings, e.g. into buildings - H02G 15/013: Sealing means for cable inlets (inlets for cables filled with, or surrounded by, gas or oil H02G15/32) - F04C 2230/231: by welding - F04C 2240/30: Casings or housings - F04C 2240/803: Electric connectors or cables; Fittings therefor - H02G 3/088: {Dustproof, splashproof, drip-proof, waterproof, or flameproof casings or inlets} - Y10S 439/926: within machine casing or motor housing, connector within casing wall - H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS - F04C: ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS (engines F03C); ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS - H02G: INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ## Abstract A power terminal feed-through incorporates a metallic body through which extend one or more current conducting pins that are hermetically sealed to the metallic body by a glass-to-metal seal. The metallic body includes an annular lip with a protrusion. During welding installation of the power terminal feed-through, the protrusion serves to assist in the welding process, better controlling the location and definition of the weld between the metallic body and a housing, and to focus the welding heat at the protrusion, thereby protecting the glass-to-metal seal. The glass-to-metal seal can be a single glass insert through which the current conducting pins extend, thereby reducing the pin circle diameter and the overall size of the power terminal feed-through. ## Claims ### Claim 1 An electric power terminal feed-through adapted to be installed to a housing, comprising: a metallic body including a cylindrical sidewall and an annular lip extending outwardly from an end of the sidewall; at least one current conducting pin extending through the metallic body; and a seal sealing the pin to the metallic body, wherein the annular lip is so configured that the annular lip engages the housing at a location away from the cylindrical sidewall. ### Claim 2 (depends on 1) The electric power terminal feed-through according to claim 1, wherein the annular lip comprises a contacting portion for engaging the housing, a gap being defined between the contacting portion and the cylindrical sidewall. ### Claim 3 (depends on 1) The electric power terminal feed-through according to claim 1, wherein the annular lip extends radially from the end of the sidewall to form an angle of about 90 degrees relative to the sidewall, the annular lip including a protrusion for engaging the housing. ### Claim 4 (depends on 1) The electric power terminal feed-through according to claim 1, wherein the annular lip extends from the end of the sidewall to form an acute angle relative to the sidewall. ### Claim 5 (depends on 4) The electric power terminal feed-through according to claim 4, wherein the acute angle is about 45 degrees. ### Claim 6 (depends on 4) The electric power terminal feed-through according to claim 4, wherein the annular lip comprises a distal end opposite to the end of the sidewall, the distal end adapted to engage the housing. ### Claim 7 (depends on 4) The electric power terminal feed-through according to claim 4, wherein the metallic body further comprises a curved portion between the end of the sidewall and the annular lip. ### Claim 8 (depends on 4) The electric power terminal feed-through according to claim 4, wherein the annular lip comprises a distal end opposite to the end of the sidewall and a contacting portion between the distal end and the end of the side wall, the contacting portion adapted to engage the housing. ### Claim 9 (depends on 1) The electric power terminal feed-through according to claim 1, wherein the metallic body further comprises a bottom wall connected to the cylindrical sidewall. ### Claim 10 (depends on 9) The electric power terminal feed-through according to claim 9, wherein the bottom wall defines at least one aperture corresponding to the at least one current conducting pin to allow for passage of the at least one current conducting pin. ### Claim 11 (depends on 10) The electric power terminal feed-through according to claim 10, wherein the seal comprises at least one seal element corresponding to the at least one aperture. ### Claim 12 (depends on 1) The electric power terminal feed-through according to claim 1, wherein the metallic body further comprises a radiused edge connected to the cylindrical sidewall, the radiused edge defining an opening to allow for passage of the at least one current conducting pin. ### Claim 13 (depends on 12) The electric power terminal feed-through according to claim 12, wherein the seal sits at least against the radiused edge. ### Claim 14 (depends on 1) The electric power terminal feed-through according to claim 1, wherein the seal is in the form of a preformed single insert. ### Claim 15 (depends on 1) The electric power terminal feed-through according to claim 1, further comprising a plurality of current conducting pins; and a longitudinal axis extending in the direction of the current conducting pins and passing through the center of the body, wherein the pins are spaced about a diameter that is centered on the longitudinal axis, and wherein the diameter is on the order of about 6.0 mm to about 11 mm. ### Claim 16 (depends on 1) The electric power terminal feed-through according to claim 1, wherein the seal is made of a material including glass. ### Claim 17 An electric power terminal feed-through comprising: a metallic body comprising an outer cylindrical sidewall having a first end and a second end, an annular lip extending from the second end of the outer cylindrical sidewall, an inner cylindrical sidewall, and a connecting wall connecting the inner cylindrical sidewall to the first end of the outer cylindrical sidewall; at least one current conducting pin extending through the metallic body; and a seal sealing the pin to the metallic body, the seal disposed within an opening defined by the inner cylindrical sidewall. ### Claim 18 (depends on 17) The electric power terminal feed-through according to claim 17, wherein the annular lip is flared out to form an obtuse angle relative to the cylindrical sidewall. ### Claim 19 (depends on 17) The electric power terminal feed-through according to claim 17, wherein the inner cylindrical sidewall and the outer cylindrical sidewall define a gap therebetween. ### Claim 20 An electric power terminal feed-through comprising: a metallic body through which extend one or more current conducting pins that are sealed to the body by a glass-to-metal seal, wherein the metallic body comprising means for facilitating welding the terminal to a housing.