# US 5,353,216 A · Inverter power source rack > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,353,216 A - Document ID: US5353216A - Status: Granted - Kind: A - Application number: 08/081,430 - Filed: 1993-06-22 - Granted: 1994-10-04 - Earliest claimed: 1992-03-23 - Assignees: Urie & Blanton Company, Inc. - Inventors: James D. Ayers; Michael J. Ayers - Web page: https://patentgrep.com/patent/US5353216A ## CPC - H05K 7/18: Construction of rack or frame - H02M 7/00: Conversion of AC power input into DC power output; Conversion of DC power input into AC power output - H05K 7/14325: {for cabinets or racks} - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P) ## Abstract A open-framed and lightweight inverter power source rack made from aluminum that offers the versatility of providing varying amounts of power sources from a single branch circuit external power supply. A first rack can act as a stand-alone power supply for up to four power sources. A second or slave rack detachably connects with the first rack as the need for power sources increases on a job site. The slave rack is fed from the same external power supply as the first rack. As the need for power sources on the job site decreases, the slave rack may be disconnected from the first rack and connected to another rack where additional power sources are required. Moreover, inverter power racks are adapted to be shipped and transported in knock-down, disassembled state for final partial assembly by the user to reduce shipping and manufacturing costs. ## Claims ### Claim 1 An inverter power source rack comprising: (a) a light weight moveable first rack consisting of an open frame having a centrally positioned spar therewithin, said open frame having at least one open level shaped to support at least one welding or plasma are inverter power source, comprising: (i) an electrical enclosure positioned on top of said open frame of said first rack, said enclosure having a detachable cover positioned thereon; (ii) disconnecting means for receiving an external branch circuit electrical power supply, (iii) means for providing a main interruptible electrical power from the disconnecting means to a first common connection bus, (iv) means for providing at least one isolated and interruptible electrical power supply from the first common connection bus to at least one means for selectively providing electrical power to at least one said inverter power source; and (v) mechanical interlocking means to prevent removal of said cover while said disconnecting means are energized by said external branch circuit electrical power supply, said mechanical interlocking means comprising handle means positioned on said cover and detachably engaged with said disconnecting means, (b) a light weight moveable second rack consisting of an open frame having a centrally positioned spar therewithin, said open frame having at least one open level shaped to support at least one said welding or plasma arc inverter power source, comprising: (vi) an electrical enclosure positioned on top of said open frame of said second rack; (vii) means for providing the main interruptible electrical power of the first rack to a second common connection bus, and (viii) means for providing at least one isolated and interruptible electrical power supply from the common connection bus to at least one means for selectively providing electrical power to at least one said inverter power source, whereby the first rack detachably engages the second rack to provide means for selectively providing isolated and interruptible electrical power to at least two said inverter power sources. ### Claim 2 (depends on 1) The inverter power source rack of claim 1 wherein the first rack and second rack are made of aluminum. ### Claim 3 (depends on 1) The inverter power source rack of claim 1 wherein the disconnecting means of (ii) is a rotary disconnect switch. ### Claim 4 (depends on 1) The inverter power source rack of claim 1 wherein the means for providing interruptible electrical power in (iii) are fuses. ### Claim 5 (depends on 1) The inverter power source rack of claim 1 wherein the means for providing: isolated and interruptible electrical power sources in (iv) and (viii) are fuses. ### Claim 6 (depends on 1) The inverter power source rack of claim 1 wherein the means for selectively providing electrical power in (iv) and (viii) are selector switches. ### Claim 7 (depends on 1) The inverter power source rack of claim 1 wherein skids are mounted to the first and second racks. ### Claim 8 (depends on 1) The inverter power source rack of claim 1 wherein caster wheels are mounted to the first and second racks. ### Claim 9 (depends on 1) The inverter power source rack of claim 1 wherein the second rack is a slave rack adapted to receive electrical power from the first rack. ### Claim 10 An inverter power source rack system comprising: (a) a lightweight moveable first rack consisting of an open frame having a centrally positioned spar therewithin, said open frame having two open levels shaped to support a first, second, third and fourth welding or plasma arc inverter power source, comprising: (i) an electrical enclosure positioned on top of said open frame of said first rack, said enclosure having a detachable cover positioned thereon; (ii) disconnecting means for receiving an external branch circuit electrical power supply, (iii) means for providing a main interruptible electrical power from the disconnecting means to a first common connection bus, (iv) means for providing a first, second, third and fourth isolated and interruptible electrical power supply from the first common connection bus to a first, second, third and fourth means for selectively providing electrical power to said first, second, third and fourth inverter power source, and (v) mechanical interlocking means to prevent removal of said cover while said disconnecting means are energized by said external branch circuit electrical power supply, said mechanical interlocking means comprising handle means positioned on said cover and detachably engaged with said disconnecting means, (b) a light weight moveable second rack consisting of an open frame having a centrally positioned spar therewithin, said open frame having two open levels shaped to support a fifth, sixth, seventh and eighth welding or plasma arc inverter power source, comprising: (vi) an electrical enclosure positioned on top of said open frame of said second rack; (vii) means for providing the main interruptible electrical power of the first rack to a second common connection bus, and (viii) means for providing a fifth, sixth, seventh and eighth isolated and interruptible electrical power supply from the second common connection bus to a fifth. sixth, seventh and eighth means for selectively providing electrical power to said fifth, sixth, seventh and eighth inverter power source whereby the first rack detachably engages the second rack to provide means for selectively providing isolated and interruptible electrical power to said first, second, third, fourth, fifth, sixth, seventh and eighth inverter power source. ### Claim 11 (depends on 10) The inverter power source rack of claim 10 wherein the first rack and second rack are made of aluminum. ### Claim 12 (depends on 10) The inverter power source rack of claim 10 wherein the means for selectively providing electrical power in (iv) and (viii) are selector switches. ### Claim 13 (depends on 10) The inverter power source rack of claim 10 wherein skids are mounted to the first and second racks. ### Claim 14 (depends on 10) The inverter power source rack of claim 10 wherein caster wheels are mounted to the first and second racks. ### Claim 15 (depends on 10) The inverter power source rack of claim 10 wherein the second rack is a slave rack. ### Claim 16 (depends on 10) The inverter power source rack of claim 10 wherein the first and the second rack are provided with lifting holes. ### Claim 17 A collapsible inverter power source rack comprising: (a) a moveable first rack having an upper level and a lower level, said first rack comprising: two side frames, each of said side frame having an upper and a lower rung, an upper universal inverter support frame detachably connected to each of said upper run of said side frames to form said upper level of said first moveable rack and a lower universal inverter support frame detachably connected to each of said lower rungs of said side frames to form said lower level of said first moveable rack, a centrally disposed spar connected to said upper and said lower universal inverter support frames, said lower universal inverter support frame being adapted to support at least one welding or plasma arc inverter power source; (b) an electrical enclosure connected to said upper level of said first rack and having said spar passing therethrough, said electrical enclosure comprising: (i) a cover positioned on top of said electrical enclosure having said spar passing therethrough to expose an inverter lifting bracket connected to one end of said spar; (ii) disconnecting means for receiving an external branch circuit electrical power supply; (iii) means for providing a main interruptible electrical power from the disconnecting means to a first common connection bus, (iv) means for providing at least one isolated and interruptible electrical power supply from the first common connection bus to at least one means for selectively providing electrical power to at least one said inverter power source, and (v) mechanical interlocking means for preventing removal of said cover while said disconnecting means are energized by said external branch circuit electrical power supply, said mechanical interlocking means comprising handle means positioned on said cover and detachably and slidably engaged with said disconnecting means; (c) a moveable second rack having an upper level and a lower level, said second rack comprising: two side frames, each of said side frame having an upper and a lower rung, an upper universal inverter support frame detachably connected to each of said upper rungs of said side frames to form said upper level of said second rack and a lower universal inverter support frame detachably connected to each of said lower rungs of said side frames to form said lower level of said second rack, a centrally disposed spar connected to said upper and said lower universal inverter support frames, said lower universal inverter support frame being adapted to support at least one said welding or plasma arc inverter power source; (d) an electrical enclosure connected to said upper level of said second rack and having said spar passing therethrough, said electrical enclosure comprising: (v) a cover positioned on top of said electrical enclosure having said spar passing therethrough to expose an inverter lifting bracket connected to one end of said spar; (vi) means for providing the main interruptible electrical power of the first rack to a second common connection bus, and (vii) means for providing at least one isolated and interruptible electrical power supply from the second common connection bus to at least one means for selectively providing electrical power to at least one said inverter power source, whereby the first rack detachably engages the second rack to provide means for selectively providing isolated and interruptible electrical power to at least two said inverter power sources. ### Claim 18 (depends on 17) The collapsible inverter power source rack of claim 17 wherein said moveable second rack is a slave rack. ### Claim 19 (depends on 17) The collapsible inverter power source rack of claim 17 wherein said moveable first rack and said moveable second rack are in a disassembled state during shipping and transportation. ### Claim 20 (depends on 17) The collapsible inverter power source rack of claim 17 wherein said moveable first rack further comprises each of said side frames having a mid-level rung, each of said mid-level rungs being detachably connected to a mid-level universal inverter support frame to form a mid level of said first rack, said mid-level universal inverter support frame being adapted to support at least one said welding or plasma arc inverter power source. ### Claim 21 (depends on 17) The collapsible inverter power source rack of claim 17 wherein said moveable second rack further comprises each of said side frames having a mid-level rung, each of said mid-level rungs being detachably connected to a mid-level universal inverter support frame to form a mid level of said second rack, said mid-level universal inverter support frame being adapted to support at least one said welding or plasma arc inverter power source. ### Claim 22 (depends on 17) The collapsible inverter power source rack of claim 17 wherein said moveable first rack further comprises each of said side frames having a mid-level rung, each of said mid-level rungs being detachably connected to a mid-level universal inverter support frame to form a mid level of said first rack, said mid-level universal inverter support frame being adapted to support at least one said welding or plasma arc inverter power source; and wherein said moveable second rack further comprises each of said side frames having a mid-level rung, each of said mid-level rungs being detachably connected to a mid-level universal inverter support frame to form a mid level of said second rack, said mid-level universal inverter support frame being adapted to support at least one said welding or plasma arc inverter power source. ### Claim 23 (depends on 17) The collapsible inverter power source rack of claim 17 wherein skids are mounted to the first and second racks. ### Claim 24 (depends on 17) The collapsible inverter power source rack of claim 17 wherein caster wheels are mounted to the first and second racks. ### Claim 25 A collapsible inverter power source rack comprising: a moveable first and a movable second rack, each of said racks having an upper level and a lower level comprising: two side frames, each of said side frames having an upper and a lower rung, an "H" shaped upper universal inverter support frame detachably connected to each of said upper rungs of said side frames to form said upper level and an "H" shaped lower universal inverter support frame detachably connected to each of said lower rungs of said side frames to form said lower level, a centrally disposed spar connected to said upper and said lower universal inverter support frames, said lower universal inverter support frame being adapted to support at least one welding or plasma arc inverter power source, an electrical enclosure connected to said upper level of each of said racks and having said spar passing therethrough; where said electrical enclosure of said first rack comprises: (i) a cover positioned on top of said electrical enclosure of said first rack having said spar passing therethrough to expose an inverter lifting bracket connected to an exposed end of said spar, (ii) disconnecting means having a rotary switch therein for receiving an external branch circuit electrical power supply, (iii) means for providing a main interruptible electrical power from the disconnecting means to a first common connection bus, (iv) means for providing at least one isolated and interruptible electrical power supply from the first common connection bus to at least one means for selectively providing electrical power to at least one said inverter power source, and (v) mechanical interlocking means for preventing removal of said cover while said disconnecting means are energized by said external branch circuit electrical power supply, said mechanical interlocking means comprising handle means positioned on said cover and detachably and slidably engaged with said rotary switch; and where said electrical enclosure of said second rack having said spar passing therethrough comprises: (v) a cover positioned on top of said electrical enclosure of said second rack having said spar passing therethrough to expose an inverter lifting bracket connected to an exposed end of said spar; (vi) means for providing the main interruptible electrical power of the first rack to a second common connection bus, and (vii) means for providing at least one isolated and interruptible electrical power supply from the second common connection bus to at least one means for selectively providing electrical power to at least one said inverter power source, whereby the first rack detachably engages the second rack to provide means for selectively providing isolated and interruptible electrical power to at least two said inverter power sources.