# US 5,344,267 A · Self-drilling blind rivet > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,344,267 A - Document ID: US5344267A - Status: Granted - Kind: A - Application number: 08/069,682 - Filed: 1993-06-01 - Granted: 1994-09-06 - Earliest claimed: 1986-08-05 - Inventors: Sven E. J. Stenberg; Curt G. Nordstrom - Web page: https://patentgrep.com/patent/US5344267A ## CPC - B25B 21/00: Portable power-driven screw or nut setting or loosening tools; (details or components, e.g. casings, bodies, of portable power-driven tools not particularly related to the operation performed B25F5/00; {for mounting or dismounting wheels B60B29/006}); Attachments for drilling apparatus serving the same purpose (machines B23P19/06) - B21J 15/048: {Setting self-drilling hollow rivets} - F16B 19/083: {Self-drilling rivets} - F16B 25/103: {by means of a drilling screw-point, i.e. with a cutting and material removing action} - F16B 2200/75: Fasteners made by sintering powders - Y10T 29/5343: Means to drive self-piercing work part - Y10T 29/5373: comprising driver for snap-off-mandrel fastener; e.g., Pop [TM] riveter - Y10T 29/53752: having rotary drive mechanism - B25B: TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING - B21J: FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES (rolling of metal B21B; making particular products by forging or pressing B21K; cladding or plating B23K; finishing surfaces by hammering B23P9/04; compacting surfaces by blasting with particulate material B24C1/10; general features of presses, presses for consolidating scrap B30B; furnaces in general F27) - F16B: DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING (couplings for transmitting rotation F16D) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A self-drilling blind rivet comprising a rivet sleeve and an upsetting pin passing the rivet sleeve at least partly and projecting from one end of the rivet sleeve. A drill bit is attached to the other end of the rivet sleeve either directly on the sleeve or on one end of the upsetting pin. ## Claims ### Claim 1 A self-drilling blind rivet comprising: a longitudinally extending sleeve having a longitudinally extending central hole which opens at a first end of said sleeve; an upsetting pin axially received in said hole and extending out of said hole through said first end, so as to have an internal portion disposed in said hole, and an external portion disposed out of said hole beyond said first end; grippable means of non-circular transverse cross-sectional shape provided on one of said sleeve and said pin to form a rotatable member, said grippable means being accessible to a turning tool from externally of said hole, for bodily rotating said rotatable member about the longitudinal axis of said sleeve and said pin; and a drill bit mounted in a slot provided on said rotatable member so as to protrude axially beyond a second end of said sleeve opposite from said first end, said drill bit being a planar drill bit that is made of a harder material than both said sleeve and said pin, said slot having axially extending side walls and a transverse bottom wall, said bottom wall having a V-shape projection which mates with a V-shaped gap in said drill bit, and opposed, clamping projections provided on the side walls extending transversely into the slot for engaging clamping recesses in the drill bit to secure said drill bit in said slot. ### Claim 2 (depends on 1) The self-drilling rivet of claim 1, wherein: said drill bit is made of drill steel. ### Claim 3 (depends on 1) The self-drilling rivet of claim 1, wherein: said drill bit is made of a compacted powder. ### Claim 4 (depends on 3) The self-drilling rivet of claim 3, wherein: said drill bit is made of silicon carbide. ### Claim 5 (depends on 1) The self-drilling rivet of claim 1, wherein: said upsetting pin terminates within said hole and said drill bit is provided on said sleeve. ### Claim 6 (depends on 1) The self-drilling rivet of claim 1, wherein: said drill bit is secured to said rotatable member by a weld. ### Claim 7 (depends on 1) The self-drilling rivet of claim 1, wherein: said drill bit is secured to said rotatable member by glue. ### Claim 8 (depends on 1) The self-drilling rivet of claim 1, wherein: said sleeve and said upsetting pin are made of aluminum and said drill bit is made of a heavier material than aluminum. ### Claim 9 (depends on 8) The self-drilling rivet of claim 8, wherein: said drill bit is made of drill steel. ### Claim 10 (depends on 8) The self-drilling rivet of claim 8, wherein: said drill bit is made of compressed, powdered silicon carbide. ### Claim 11 (depends on 1) The self-drilling rivet of claim 1, wherein: said sleeve includes a radially extending collar at said first end of said sleeve. ### Claim 12 (depends on 11) The self-drilling rivet of claim 11, wherein; said upsetting pin terminates within said hole and said drill bit is provided on said sleeve. ### Claim 13 (depends on 12) The self-drilling rivet of claim 12, wherein: said upsetting pin includes an enlarged main portion located within said hole of said sleeve and a line of weakness formed transversely across said upsetting pin between said enlarged main portion and said opening, so that said upsetting pin is predisposed to break off at a location intermediate the axial extend of said hole. ### Claim 14 (depends on 13) The self-drilling rivet of claim 13, wherein: said grippable means comprises an axially facing groove formed in an end surface of said sleeve at said first end of said sleeve radially outwardly of said opening. ### Claim 15 (depends on 1) The self-drilling rivet of claim 1, wherein, said sleeve is tubular, said upsetting pin also extends out of said hole at said second end of said sleeve and said drill bit is provided on said upsetting pin axially beyond said second end of said sleeve. ### Claim 16 (depends on 15) The self-drilling rivet of claim 15, wherein: said upsetting pin is provided with a transversally extending line of weakness located intermediate the axial extend of said hole, so that said upsetting pin is predisposed to break off at a location intermediate the axial extend of said hole. ### Claim 17 (depends on 16) The self-drilling rivet of claim 16, wherein: said grippable means comprises a transversally broadened wing formed on said upsetting pin. ### Claim 18 A self-drilling blind rivet comprising: a first member constituted by a longitudinally extending sleeve having a longitudinally extending central cavity which opens at a first end of said sleeve; a second member constituted by an upsetting pin axially received in said cavity and extending out of said cavity through said first end, so as to have an internal portion disposed in said cavity, and an external portion disposed out of said cavity beyond said first end; grippable means provided on one of said first and second members so as to be accessible to a turning tool from externally of said cavity, for bodily rotating said member having grippable means about the longitudinal axis of said first and second members; and a drill blade, having planar, axially extending sides, mounted in a slot provided on said member having grippable means so as to protrude axially beyond second end of said sleeve opposite said first end, said drill blade being formed of a material that is more durable than both the material of which said sleeve is made and the material of which said pin is made, when used as a drill blade; said drill blade having a V-shaped gap that mates with a V-shaped projection projecting from said member having grippable means into said slot, said drill blade having opposed recesses that engage opposed, transverse clamping projections on said member having grippable means extending in the slot to secure said drill blade to said one member. ### Claim 19 A self-drilling blind rivet comprising: a rivet sleeve having oppositely positioned first and second ends, said rivet sleeve having a bore that extends at least part of the way therethrough, the bore opening to the second end of the rivet sleeve; an upsetting pin having first and second ends, a portion of said upsetting pin being positioned in the bore in the rivet sleeve and the second end of the upsetting pin extending out of the second end of the rivet sleeve; and a drill bit mounted in a slot formed on one of said first end of the rivet sleeve and said first end of the upsetting pin, said drill bit being a planar drill bit which is fabricated of a material that is different from the material from which the upsetting pin and the rivet sleeve are fabricated; said slot having axially extending side walls and a transverse bottom wall, said bottom wall having a V-shaped axial projection which mates with a V-shaped gap in a mounting end of said drill bit, said side walls having opposed, clamping projections extending transversely into the slot for engaging clamping recesses in the drill bit to secure said drill bit in said slot. ### Claim 20 (depends on 19) The self-drilling blind rivet according to claim 19, wherein the bore in the rivet sleeve extends completely through the rivet sleeve and opens to the first end of the rivet sleeve, said upsetting pin extending completely through the rivet sleeve so that the first end of the upsetting pin extends out of the first end of the rivet sleeve. ### Claim 21 (depends on 20) The self-drilling blind rivet according to claim 20, wherein a portion of the upsetting pin adjacent the first end thereof is enlarged in the radial direction, the enlarged portion of the upsetting pin having an outside diameter that is greater than the inside diameter of the bore in the rivet sleeve. ### Claim 22 (depends on 20) The self-drilling blind rivet according to claim 20, wherein the slot in which the drill bit is mounted is formed in the first end of the upsetting pin, said slot extending axially along the upsetting pin. ### Claim 23 (depends on 20) The self-drilling blind rivet according to claim 20, wherein said drill bit is welded to the first end of the upsetting pin. ### Claim 24 (depends on 20) The self-drilling blind rivet according to claim 20, wherein said drill bit is glued to the first end of the upsetting pin. ### Claim 25 (depends on 19) The self-drilling blind rivet according to claim 19, wherein said first end of the rivet sleeve is closed so that the first end of the upsetting pin is enclosed within the bore in the rivet sleeve. ### Claim 26 (depends on 25) The self-drilling blind rivet according to claim 25, wherein the slot in which the drill bit is mounted is formed in the first end of the sleeve, said slot extending axially along the sleeve. ### Claim 27 (depends on 19) The self-drilling blind rivet according to claim 19, wherein said drill bit is made of drill steel, and said rivet sleeve and said upsetting pin are made of a material other than drill steel. ### Claim 28 (depends on 19) The self-drilling blind rivet according to claim 19, wherein said drill bit is made of a pressed pulverulent material, and said upsetting pin and said rivet sleeve are made of a material other than pulverulent material. ### Claim 29 (depends on 19) The self-drilling blind rivet according to claim 19, wherein the second end of said upsetting pin is positioned opposite said drill bit relative to the rivet sleeve. ### Claim 30 (depends on 29) The self-drilling blind rivet according to claim 29, wherein said drill bit is formed as a part of said upsetting pin, and said drill bit extends beyond the first end of the rivet sleeve. ### Claim 31 (depends on 29) The self-drilling blind rivet according to claim 29, wherein said first end of the rivet sleeve is closed so that the first end of the upsetting pin is enclosed within the bore in the rivet sleeve, said drill bit being attached to said first end of said rivet sleeve and the first end of the upsetting pin being enlarged and having an outer diameter that is less than an outer diameter of the rivet sleeve. ### Claim 32 (depends on 19) The self-drilling blind rivet according to claim 19, wherein said drill bit is formed as a drilling blade.