# US 12,004,633 B1 · Hinge having dual pivot axes > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,004,633 B1 - Document ID: US12004633B1 - Status: Granted - Kind: B1 - Application number: 18/231,744 - Filed: 2023-08-08 - Granted: 2024-06-11 - Earliest claimed: 2023-08-08 - Assignees: EACH Jewels LLC - Applicants: Each Jewels LLC - Inventors: Abigail L. Dubois; Lawrence H. Dubois - Web page: https://patentgrep.com/patent/US12004633B1 ## CPC - A45D 8/20: Hair clamps, i.e. elastic multi-part clamps, the parts of which are pivotally connected between their ends - E05D 3/06: with two or more pins (E05D7/08 takes precedence) - E05D 3/12: with two parallel pins and one arm - E05F 1/1207: {with a coil spring parallel with the pivot axis} - E05F 1/1215: {with a canted-coil torsion spring} - E05F 1/1253: {with a compression spring} - F16C 11/04: Pivotal connections (hinges for doors, windows or wings E05D) - E05Y 2900/132: Doors - E05Y 2900/20: for furniture, e.g. cabinets - E05Y 2999/00: Subject-matter not otherwise provided for in this subclass - A45D: HAIRDRESSING OR SHAVING EQUIPMENT (wigs, toupees or the like A41G3/00, A41G5/00; hairdressers' chairs A47C1/04; hair cutting appliances, razors B26B); EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING - E05D: HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS (pivotal connections in general F16C11/00) - E05F: DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING - F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS - E05Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF ## Abstract A hinge having dual axes includes two hinge members each having a hinge leaf and one or more knuckles, a pivot pin received in a longitudinally extending bore in each knuckle, each pivot pin also received in one of two apertures in one or more connector plates that interconnect the hinge members, and one or more springs biasing the hinge members toward a closed position, so that the knuckles are rotatably disposed adjacent to each other, each hinge member independently rotatable about one of two pivot axes, and only a single seam is presented between the two knuckles as the hinge members move between open and closed configurations. In one embodiment a connector incorporating the connecting plates covers and hides the springs from view. ## Claims ### Claim 1 A hinge having dual pivot axes, the hinge comprising: two hinge members, each hinge member having a hinge leaf and one or more knuckles, each of the one or more knuckles extending along an inner edge of the hinge leaf and having an axially extending bore, two or more pivot pins, and one or more connector plates, each connector plate having two spaced apart axially extending apertures, each one of the two or more pivot pins received in the bores of the one or more knuckles of one of the hinge members and received in one of the two apertures of each of the one or more connector plates such that each of the one or more connector plates connects at least two of the two or more pivot pins, each pivot pin defining a pivot axis about which one of the hinge members pivots, such that the one or more connector plates connect the hinge members so that the knuckles of one of the hinge members are disposed immediately adjacent to the knuckles of the other of said hinge members forming a seam, and each of the hinge members is independently rotatable about the pivot axis of one of the two or more pivot pins thereby enabling the hinge leaves to pivot relative to one another between open and closed configurations. ### Claim 2 (depends on 1) The hinge of claim 1 further comprising: the one or more connector plates comprising top and bottom connector plates, a coupler including said top and bottom connector plates and a connector body extending between and integrally joining the top and bottom connector plates, each of the apertures of each of the one or more connector plates axially aligned with the bores of the one or more knuckles of one of the hinge members. ### Claim 3 (depends on 2) The hinge of claim 2 further comprising: two or more helical springs, the coils of each spring defining a center bore, each of the springs having two ends, one of the pivot pins received in the center bore of each one of the two or more helical springs, one end of each of the two or more springs biased against the connector body, the other end of said spring biased against one of the hinge leaves, so that the two or more helical springs bias the hinge leaves to the closed configuration. ### Claim 4 (depends on 1) The hinge of claim 1 further comprising: when viewed from a front perspective, any structural connection between the hinge leaves being substantially hidden behind the adjacently disposed knuckles. ### Claim 5 (depends on 4) The hinge of claim 4 further comprising: the distance between the inner edges of the hinge leaves along the seam defining a spacing, the inner edge of each of the hinge leaves having an arced shape having a radius about the knuckle thereof, such that the spacing between the inner edges remains constant during pivoting motion of the hinge leaves. ### Claim 6 (depends on 1) The hinge of claim 1 further comprising: the one or more knuckles of each hinge member comprising two or more knuckles including a top knuckle and a bottom knuckle spaced from the top knuckle, the top knuckle having a bottom end and the bottom knuckle having a top end, a length of each pivot pin extending between the bottom end of the top knuckle and the top end of the bottom knuckle of one of the hinge members, and the one or more connector plates comprising top and bottom connector plates, a coupler including said top and bottom connector plates and a connector body extending between and integrally joining said connector plates, the connector body and connector plates forming an interior cavity, the lengths of the pivot pins retained in said cavity so that they are hidden from view. ### Claim 7 (depends on 6) The hinge of claim 6 further comprising: the connector body having a back wall and two side walls extending from the back wall, the side walls intersecting the top and bottom plates, the back wall, side walls, and top and bottom plates defining said cavity. ### Claim 8 (depends on 6) The hinge of claim 6 further comprising: the connector plates disposed between the top and bottom knuckles of the hinge members. ### Claim 9 (depends on 1) The hinge of claim 1 further comprising: one or more resilient bodies biasing the hinge leaves toward the closed configuration. ### Claim 10 (depends on 9) The hinge of claim 9 further comprising: said one or more resilient bodies comprising two or more helical springs, each of the springs having two ends, each end affixed to one of the pivot pins. ### Claim 11 (depends on 10) The hinge of claim 10 further comprising: the inner edge of each of the hinge leaves having an arced shape segment extending between the top and bottom knuckles thereof, the arched shaped segments moveable between an open configuration and a closed configuration, in the closed configuration the arced segments of the hinge leaves disposed in a receded position relative to and not touching or barely touching the one or more springs, and in the open configuration the arced segments disposed in a rearwardly projecting position in contact with and tensioning the one or more springs such that the springs urge the hinge leaves toward their positions in the closed configuration. ### Claim 12 (depends on 10) The hinge of claim 10 further comprising: one or more additional knuckles disposed between the two helical springs. ### Claim 13 (depends on 9) The hinge of claim 9 further comprising: each hinge leaf of the two hinge members having a free end, said one or more resilient bodies comprising a leaf spring having a mid-portion and two opposite outer portions, the mid-portion confined between the inner edges of the hinges leaves and the two pivot pins, each of the outer portions captured against one of the hinge leaves between the pivot pins and the free end thereof. ### Claim 14 (depends on 13) The hinge of claim 13 further comprising: each hinge leaf have a slit, each outer portion of the leaf spring captured in the slit of one of hinge leaves. ### Claim 15 (depends on 14) The hinge of claim 14 further comprising: a retaining bar having opposite ends attached to each hinge leaf, the retaining bar having a middle portion between the opposite ends spaced from the hinge leaf thereby forming said slit. ### Claim 16 (depends on 14) The hinge of claim 14 further comprising: at least one of the outer portions of the leaf spring having a slot, a fastener affixed to one of the hinge leaves through said slot, the fastener having a head including a width greater than that of the slot, said outer portion of the leaf spring slidably captured between the head of the fastener and the hinge leaf, such that said outer portion slides against the hinge leaf during pivoting movement of the hinge members. ### Claim 17 (depends on 1) The hinge of claim 1 further comprising: said two pivot pins connected by a bridge. ### Claim 18 (depends on 1) The hinge of claim 1 wherein: the one or more connector plates are disposed rearward of the adjacent knuckles of the hinge members such that said connector plates are substantially hidden from view behind the knuckles from a front perspective. ### Claim 19 (depends on 1) The hinge of claim 1 wherein: when viewed from a front perspective, none of the connector plates can readily be seen directly between the knuckles. ### Claim 20 A hinge having dual pivot axes comprising: two hinge members, each hinge member having a hinge leaf and top and bottom knuckles, each knuckle extending along an inner edge of the hinge leaf and having an axially extending bore, the top knuckle having a bottom end and the bottom knuckle having a top end, the knuckles of each hinge member disposed immediately adjacent to the knuckles of the other hinge member, two pivot pins, a length of each pivot pin extending between the bottom end of the top knuckle and the top end of the bottom knuckle of one of the hinge members, and a coupler having top and bottom connector plates and an interior cavity, each of the top and bottom connector plates having two spaced apart apertures extending axially in parallel alignment with the two pivot pins, the coupler disposed between the bottom end of the top knuckle and the top end of the bottom knuckle, the lengths of the pivot pins retained in said cavity so that they are hidden from view, each one of the two pivot pins received in the bores of both of the knuckles of one of the hinge members and received in one of the apertures of each of the top and bottom connector plates of the coupler, each pivot pin defining a pivot axis about which one of the hinge members pivots, such that the coupler connects the hinge members so that the hinge members are each independently rotatable about one of the pivot axes thereby enabling the hinge leaves to pivot between open and closed configurations. ### Claim 21 (depends on 20) The hinge of claim 20 wherein: each knuckle extends axially along the inner edge of one of the hinge members. ### Claim 22 A hinge having dual pivot axes comprising: two hinge members, each hinge member having a hinge leaf and top and bottom knuckles, each knuckle extending along an inner edge of the hinge leaf and having an axially extending bore, the top knuckle having a bottom end and the bottom knuckle having a top end, two pivot pins, a length of each pivot pin extending between the bottom end of the top knuckle and the top end of the bottom knuckle of one of the hinge members, and a coupler having a back wall, opposing side walls extending from the back wall, and having top and bottom connector plates and an interior cavity, the back wall, side walls, and top and bottom connector plates defining said cavity, each of the top and bottom connector plates having two spaced apart apertures, the lengths of the pivot pins disposed in said cavity so that they are hidden from view, each one of the two pivot pins received in the bores of both of the knuckles of one of the hinge members and received in one of the apertures of each of the top and bottom connector plates of the coupler, each pivot pin defining a pivot axis about which one of the hinge members pivots, such that the coupler connects the hinge members such that the knuckles of one of the hinge members are disposed adjacent to the knuckles of the other of the hinge members, and so that the hinge members are each independently rotatable about one of the pivot axes thereby enabling the hinge leaves to pivot between open and closed configurations. ### Claim 23 A hinge having dual pivot axes comprising: two hinge members, each hinge member having a hinge leaf and top and bottom knuckles, each knuckle extending along an inner edge of the hinge leaf, each knuckle having a top end, a bottom end, and a bore extending axially between the top and bottom ends, two pivot pins, a coupler having a top connector plate, a bottom connector plate, and a connector body extending between and integrally joining the top and bottom connector plates, each of the top and bottom connector plates having two spaced apart axially extending apertures, and two helical springs, the coils of each spring defining a center bore, each of the springs having two ends, each one of the two pivot pins received in the center bore of one the two helical springs, one end of each of the springs biased against the coupler, the other end of the spring biased against one of the hinge leaves, one of the apertures of each of the coupler's top and bottom connector plates axially aligned with the bore of the knuckle of one of the hinge members, and one of the two pivot pins received in the bores of both of the top and bottom knuckles of one of the hinge members and received in one of the apertures of each of the top and bottom connector plates of the coupler, such that the coupler connects the hinge members so that the knuckles of one of the hinge members are disposed immediately adjacent to the knuckles of the other of the hinge members, and so that the hinge members are each independently rotatable about one of the pivot pins thereby enabling the hinge leaves to pivot between open and closed configurations.