# US 10,483,070 B1 · Fuses and methods of forming fuses > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,483,070 B1 - Document ID: US10483070B1 - Status: Granted - Kind: B1 - Application number: 16/264,280 - Filed: 2019-01-31 - Granted: 2019-11-19 - Earliest claimed: 2019-01-31 - Assignees: Littelfuse, Inc. - Applicants: Littelfuse, Inc. - Inventors: James J. Beckert - Web page: https://patentgrep.com/patent/US10483070B1 ## CPC - H01H 85/18: Casing fillings, e.g. powder - H01H 69/02: Manufacture of fuses - H01H 85/0013: {Means for preventing damage, e.g. by ambient influences to the fuse} - H01H 85/0417: {with parallel side contacts} - H01H 85/12: Two or more separate fusible members in parallel - H01H 85/143: Electrical contacts; Fastening fusible members to such contacts - H01H 85/147: Parallel-side contacts - H01H: ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES (contact cables H01B7/10; electrolytic self-interrupters H01G9/18; emergency protective circuit arrangements H02H; switching by electronic means without contact-making H03K17/00) ## Abstract A fuse may include a leadframe including a first terminal having a first end and a second end, and a second terminal having a first end and a second end. A bridge may connect the respective second ends of the terminals. The bridge may have one or more protrusions disposed between the terminals and may be extended from the bridge. A base may have first and second apertures, and the first and second terminals may be at least partially disposed into the respective first and second apertures. The base may further include one or more indentations such that respective ends of the one or more protrusions are received in each of the one or more indentations. A plurality of wires may be connected from the first terminal to the second terminal, and each of the protrusions therebetween. ## Claims ### Claim 1 A fuse, comprising: a leadframe including a first terminal having a first end and a second end, and a second terminal having a first end and a second end, the second ends of each terminal being connected by a bridge, the bridge having one or more protrusions disposed between the first and second terminals and extending from the bridge; a base including a first aperture and a second aperture, the first and second terminals being at least partially disposed within the first and second apertures, respectively, such that the base is disposed between the respective first ends and respective second ends of the first and second terminals, and the base further including one or more indentations such that respective ends of the one or more protrusions are received into each of the one or more indentations; and a plurality of wires directly connected to each of the first end of the first terminal and the first end of the second terminal, and further directly connected to each of the one or more protrusions therebetween. ### Claim 2 (depends on 1) The fuse according to claim 1, further comprising a cover disposed over the base, the cover including a cavity such that the first end of the first terminal, the first end of the second terminal, and the plurality of wires are enclosed by the cover. ### Claim 3 (depends on 2) The fuse according to claim 2, wherein the cover and base contain an arc suppressant. ### Claim 4 (depends on 2) The fuse according to claim 2, wherein the cover is attached to the base such that the cover extends around and receives the base into the cavity of the cover. ### Claim 5 (depends on 1) The fuse according to claim 1, wherein at least a portion of each of the first and second terminals extend into the respective first and second apertures of the base in an interference fit. ### Claim 6 (depends on 1) The fuse according to claim 1, wherein the first terminal includes a first locking protrusion extending from the first end of the first terminal and into engagement with the base to retain the leadframe, and the second terminal includes a second locking protrusion extending from the first end of the second terminal and into engagement with the base to retain the leadframe. ### Claim 7 (depends on 1) The fuse according to claim 1, wherein the bridge is removable subsequent to the leadframe being received in the base, such that the first terminal, the second terminal, and each of the one or more protrusions are electrically connected via the plurality of wires. ### Claim 8 (depends on 1) The fuse according to claim 1, wherein the plurality of wires are attached to the first and second terminals and the one or more protrusions, such that the protrusions support the plurality of wires extending between the first and second terminals. ### Claim 9 (depends on 1) The fuse according to claim 1, wherein the base includes a first collar extending around the first aperture such that the first terminal is supported by the first collar, and a second collar extending around the second aperture such that the second terminal is supported by the second collar. ### Claim 10 (depends on 9) The fuse according to claim 9, wherein the first and second collars are protrusions extending from a first surface of the base towards the respective first ends of the first and second terminals. ### Claim 11 A method of forming a fuse, comprising; connecting a leadframe to a base, the leadframe including a first terminal having a first end and a second end and a second terminal having a first end and a second end, the second ends connected by a bridge, and the base including a first aperture and a second aperture to receive the respective first and second terminals; bonding a plurality of wires at each of the first end of the first terminal and the first end of the second terminal; attaching a cover to the base, the cover including a cavity such that the first end of the first terminal and the first end of the second terminal are enclosed by the cover; and wherein the bridge has one or more protrusions disposed between the first and second terminals and extending from the bridge, the plurality of wires being bonded to each of the one or more protrusions therebetween. ### Claim 12 (depends on 11) The method according to claim 11, wherein the first and second terminals are at least partially received into the respective first and second apertures such that the base is disposed between the respective first ends and respective second ends of the first and second terminals. ### Claim 13 (depends on 11) The method according to claim 11, wherein and the base includes one or more indentations to receive respective ends of the one or more protrusions. ### Claim 14 (depends on 11) The method according to claim 11, further comprising removing the bridge subsequent to the connecting the leadframe and the base, such that the first terminal, the second terminal, and each of the one or more protrusions are electrically connected via the plurality of wires. ### Claim 15 (depends on 11) The method according to claim 11, wherein the plurality of wires are attached to the first and second terminals and the one or more protrusions, such that the protrusions support the plurality of wires extending between the first and second terminals. ### Claim 16 (depends on 11) The method according to claim 11, wherein the first terminal includes a first locking protrusion extending from the first end of the first terminal and engageable with the base to retain the leadframe, and the second terminal includes a second locking protrusion extending from the first end of the second terminal and engageable with the base to retain the leadframe. ### Claim 17 (depends on 11) The method according to claim 11, further comprising filling the cavity of the cover with an arc suppressant. ### Claim 18 (depends on 11) The method according to claim 11, wherein the base includes a first collar around the first aperture such that the first terminal is supported by the first collar, and a second collar around the second aperture such that the second terminal is supported by the second collar. ### Claim 19 (depends on 18) The method according to claim 18, wherein the first and second collars are protrusions extending from a first surface of the base towards the respective first ends of the first and second terminals.