# US 2008/0184531 A1 · Hinge with adapted rotation friction > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2008/0184531 A1 - Document ID: US20080184531A1 - Status: Published application - Kind: A1 - Application number: 11/878,184 - Filed: 2007-07-23 - Published: 2008-08-07 - Earliest claimed: 2007-02-06 - Inventors: Po-Tsun Chao - Web page: https://patentgrep.com/patent/US20080184531A1 ## CPC - G06F 1/1681: {Details related solely to hinges (hinge details related to the transmission of signals or power are classified in G06F1/1683)} - G06F 1/1616: {with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position} - E05D 5/10: Pins, sockets or sleeves; Removable pins (E05D15/522 takes precedence) - E05D 7/10: to allow easy separation {or connection} of the parts at the hinge axis ({E05D5/12 and E05D15/50 take precedence } ; substitutes for hinges E05D1/06) - E05D 11/082: {with substantially radial friction, e.g. cylindrical friction surfaces} - E05D 2005/102: {Pins} - E05Y 2800/28: tubular, annular - E05Y 2999/00: Subject-matter not otherwise provided for in this subclass - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - E05D: HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS (pivotal connections in general F16C11/00) - 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 with adapted rotation friction includes a bracket, at least one cylinder, a pintle, and a pin. The bracket includes a plate-like structure extending along a horizontal datum plane and having a first edge and an opposite second edge. The first edge forms the cylinder of the bracket. The pintle includes a stem and an end plate. The stem has a free end, a mounting end mounted to the end plate, and at least one slit extending from the free end toward the mounting end. When the stem is inserted into the cylinder with the free end thereof, the pin is inserted into the slit of the stem to have the stem radially expanded to an increased outside diameter and thus making an outside circumference of the stem inducing a predetermined rotation friction with an inside surface of the cylinder of the bracket. ## Claims ### Claim 1 A hinge comprising: a bracket comprising a plate-like structure extending along a horizontal datum plane and having a first edge and an opposite second edge; at least one cylinder mounted to the first edge of the bracket; a pintle comprising a stem and an end plate, the stem having a free end and a mounting end mounted to the end plate, the stem forming at least one slit that extends in a direction from the free end toward the mounting end; a pin having an insertion end and a distal end; wherein the stem of the pintle is insertable into the cylinder with the free end thereof and the pin is insertable into the slit of the stem with the insertion end thereof that is positioned to align to the free end of the stem whereby the stem is radially expanded to an increased outside diameter to have an outside circumference of the stem inducing a predetermined rotation friction with an inside surface of the cylinder of the bracket. ### Claim 2 (depends on 1) The hinge as claimed in claim 1, wherein the cylinder has a root end and a non-fixed end, the root end being mounted to the first edge of the bracket, the non-fixed end being extended in a circular path along an angular direction to thereby form a ring-like configuration having a gap. ### Claim 3 (depends on 1) The hinge as claimed in claim 1, wherein the cylinder of the bracket comprises a first-direction cylindrical section and a second-direction cylindrical section closely adjacent to the first-direction cylindrical section, wherein: the first-direction cylindrical section has a root end and a non-fixed end, the root end being mounted to the first edge of the bracket, the non-fixed end being extended in a circular path along a clockwise angular direction to thereby form an open ring-like configuration having a gap; and the second-direction cylindrical section has a root end and a non-fixed end, the root end being mounted to the first edge of the bracket, the non-fixed end being extended in a circular path along a counterclockwise angular direction to thereby form an open ring-like configuration having a gap, ### Claim 4 (depends on 1) The hinge as claimed in claim 1, wherein the cylinder has a closed ring-like configuration. ### Claim 5 (depends on 1) The hinge as claimed in claim 1, wherein the slit extends from the free end of the stem to a location close to the mounting end of the stem of the pintle. ### Claim 6 (depends on 1) The hinge as claimed in claim 1, wherein the stem of the pintle forms a central bore extending in a direction from the free end of the stem toward the mounting end of the stem, the central bore being in communication with the slit, whereby when the pin is inserted into and coupled to the stem, the insertion end of the pin is fit into the central bore of the stem. ### Claim 7 (depends on 1) The conductor pattern structure as claimed in claim 1, wherein the pin forms an expanded end.