Abstract: A hinge for a notebook computer has a base, a seat, a first ring, a second ring, a positioning ring and a fastener. The base has a hole and a flange. The flange protrudes from the hole. The seat is mounted pivotally in the hole and has a circular tab and a limit. The limit radially extends from the circular tab and selectively abuts the flange to limit the rotating angle of the seat. The first and second rings are mounted between the seat and the base to reduce the friction. The positioning ring is mounted in the hole and has a first boss and a second boss. The fastener is mounted in the hole and has a first notch and a second notch. The first notch and the second notch selectively engage with the second boss and the first boss to position the seat.

Abstract: A pivotal device has a sleeve and a shaft. The sleeve has at least one notch defined in the sleeve. The shaft has two opposite plane surfaces formed on the shaft and two arcuate surfaces formed respectively on the shaft adjacent to the corresponding plane surfaces whereby the arcuate surfaces selectively engage the at least one notch. The sleeve is mounted securely on a chassis of a laptop. The shaft is mounted securely on a cap of the laptop. When the cap is rotated relative to the chassis, the shaft is rotated relative to the sleeve. The notch engages one of the arcuate surfaces so the cap is closed without collision.

Abstract: A hinge mounted between a cover and a base of a notebook has a base bracket having a mounting hole, a cover bracket having a stationary hole, a limiting spacer and a pintle. The limiting spacer is mounted securely on one side of the base bracket and has a mounting hole and a limiting flange. The pintle has a proximal end mounted securely in the stationary hole of the cover bracket, a distal end mounted rotatably through the mounting hole of the limiting spacer and the mounting hole of the base bracket, and a head formed near the proximal end. The head has a limiting protrusion selectively abutting a front end or a rear end of the limiting flange to keep the cover of the notebook in position when the cover being closed or opened and to prevent the base bracket from resulting stress concentration.

Abstract: A hinge has a hollow sleeve and a shaft. The sleeve has a first portion and a second portion respectively formed in a first end of the sleeve, and a first fastener formed in a second end of the sleeve. The shaft has a head formed in a first end of the shaft and a second fastener formed in a second end of the shaft. The first fastener is mounted securely in a chassis of a device and the second fastener is mounted securely in a cover of the device. The head is rotated relative to the sleeve when the cover is rotated relative to the chassis. With the friction between the sleeve and the head, the cover can be positioned at any angle as desired relative to the chassis of the device.

Abstract: A hinge has a sleeve and a shaft and is mounted between a cover and a base of an electrical device. The sleeve is hollow, is attached to the base and has an internal diameter. The shaft is attached to the cover, is mounted pivotally in the sleeve and has a hollow torsion rod. The torsion rod has an external diameter, an opening end and multiple slots. The external diameter of the torsion rod is bigger than the internal diameter of the sleeve to provide friction. The slots are formed in the torsion rod without communicating with the opening end to provide uniform friction. Because the torsion rod is hollow to provide spaces for the torsion rod to be deformed, the torsion rod maintains its shape. Therefore the torsion rod provides uniform friction with the sleeve.

Abstract: A hinge for a notebook includes an L-shaped seat with a barrel. A pintle has a shaft extending in the barrel of the seat. A first tube, a sleeve and a second tube are in turn mounted on the shaft. The first tube and second tube are securely received in the barrel and each has a stop formed at a respective end facing the sleeve. The sleeve has two arcuate segments respectively formed at two ends and corresponding to the stops of the tubes. Thus, the sleeve can be rotated along with the shaft about the first and second tubes until one arcuate segment of the sleeve abuts the corresponding stop. Whereby, a user can raise the display with a small force to separate the display from the body and a large force to completely raise and position the display.

Abstract: A hinge for an LCD monitor of a video movie camera is composed of a vertical axle, a barrel, a horizontal axle, a positioning disk, two resilient dished washers, and a seat. The vertical axle is secured on the camera. The barrel is pivotally mounted on the vertical axle. The horizontal axle is rotatably mounted on the barrel. The positioning disk and the resilient dished washers are provided on an end of the horizontal axle. The seat is mounted at the other end of the horizontal axle and the LCD monitor is installed on the seat. The LCD monitor can be smoothly turned about the vertical axle and the horizontal axle, and be stably positioned at any desired positions.

Abstract: A hinge has a shaft, a rotating bracket, a stationary bracket, a rotating positioning element and a stationary positioning element. The rotating bracket is mounted securely on the shaft and is attached to a cover of an electrical appliance. The stationary bracket is mounted around the shaft and is attached to a base of the electrical appliance. The rotating positioning element is mounted securely on the shaft and has two positioning protrusions. The stationary positioning element is mounted securely on the stationary bracket and has two positioning detents. The positioning detents selectively engage the positioning protrusions to keep the cover from bumping against the base.

Abstract: A hinge has a pin, a rotating positioning element and a stationary positioning element. The rotating positioning element is mounted around the pin and has a first, second, third and fourth detent and a rear surface with an inner circular area and an outer circular area. The first and second detents are formed in the inner circular area. The third and fourth detents are formed in the outer circular area. Each detent has a centerline. The centerlines of the first and third detents coincide. The centerlines of the second and fourth detents coincide. The stationary positioning element is mounted around the pin and has a first protrusion and a second protrusion. The first protrusion is formed on the stationary positioning element and selectively engages the first and second detents. The second protrusion is formed on the stationary positioning element and selectively engages the third and fourth detents.

Abstract: A hinge has a pin, a rotating positioning element and a stationary positioning element. The rotating positioning element is mounted around the pin and has a first, second, third and fourth detent and a rear surface with an inner circular area and an outer circular area. The first and second detents are formed in the inner circular area. The third and fourth detents are formed in the outer circular area. Each detent has a centerline. The centerlines of the first and third detents coincide. The centerlines of the second and fourth detents coincide. The stationary positioning element is mounted around the pin and has a first protrusion and a second protrusion. The first protrusion is formed on the stationary positioning element and selectively engages the first and second detents. The second protrusion is formed on the stationary positioning element and selectively engages the third and fourth detents.

Abstract: A robust hinge has a redundant positioning capability, is mounted between a cover and a base and has a keyed pivot pin, a rotating leaf, a stationary leaf and a spacer assembly. The rotating leaf is attached to the keyed pivot pin and connects to the cover. The stationary leaf is mounted around the keyed pivot pin, connects to the base and has a primary stationary positioning element. The spacer assembly is mounted around the keyed pivot pin and has primary and secondary rotating positioning elements and a secondary stationary positioning element. Each stationary positioning element has a detent. Each rotating positioning element has a protrusion corresponding to the detent. The protrusions engage the detents to provide the redundant positioning capability to keep the cover form hitting the base. Two pairs of protrusions and detents provide the redundant positioning capability.

Abstract: A hinge has a spacer assembly, a rotating device, a pivot shaft and a nut. The rotating device is mounted on a display screen, and the pivot shaft is mounted on a base. The present invention provides a convenience of the screen being foldable parallel to the base.

Abstract: A hinge for a notebook includes an L-shaped seat with a barrel. A pintle has a shaft extending in the barrel of the seat. A first tube, a sleeve and a second tube are in turn mounted on the shaft. The first tube and second tube are securely received in the barrel and each has a stop formed at a respective end facing the sleeve. The sleeve has two arcuate segments respectively formed at two ends and corresponding to the stops of the tubes. Thus, the sleeve can be rotated along with the shaft about the first and second tubes until one arcuate segment of the sleeve abuts the corresponding stop. Whereby, a user can raise the display with a small force to separate the display from the body and a large force to completely raise and position the display.

Abstract: A hinge positioning apparatus for a foldable mobile telephone has a shaft, a set angle device and a biasing member. A washer is mounted on one end of the shaft. The set angle device has a stationary sleeve with a concave groove and a retractable sleeve with a convex ridge. The convex groove of stationary sleeve is rotatably attached to the concave ridge of the retractable surface. The biasing member is mounted around the shaft and mounted between the retractable sleeve and the washer. With such a hinge positioning apparatus, the hinge positioning apparatus can be used for an extended life without permanently deforming the biasing member inside the hinge positioning apparatus.

Abstract: A dual-directional hinge for a portable device with a body and a monitor such as a mobile phone, a notebook computer or a PDA is disclosed. The hinge is composed of a first supporting member, a second supporting member, a seat, a vertical pin and a horizontal pintle. The first supporting member is mounted on the monitor and is rotatably mounted on the second supporting member by the vertical pin. The second supporting member and the seat are mounted rotatably on the body by the horizontal pintle. Thus, the monitor can be turned about the horizontal pintle to be raised from the body, and can be turned left or right about the vertical pin to change the horizontal viewing angle.

Abstract: A hinge includes a pintle in turn extending through a first sheet, a rotating ring, a second sheet, a positioning ring, an elastic ring, and a washer, and fastened by a collar at a distal end of the pintle. The hinge can be rotated clockwise and counterclockwise and positioned at the angles of 0 degrees, 90 degrees, 180 degrees, ?90 degrees, and ?180 degrees.

Abstract: The hinge with orthogonal pivot axes can be used with a cellular phone having a cover and a base and has a tilt hinge, an offset hinge and a turning hinge. The tilt, offset and turning hinges respectively comprise a rotating positioning element and a stationary positioning element. The rotating positioning elements of the tilt and offset hinges have protrusions corresponding to and simultaneously engaging detents in the stationary positioning element when the tilt and offset hinges are closed and opened. The rotating positioning element of the turning hinge has protruding limits formed on the rotating positioning element selectively abutting the positive stop on the stationary positioning element of the turning hinge when the turning hinge is rotated.

Abstract: A hinge includes a first leaf assembly with a first leaf and two barrels. A pintle has a cylindrical part extending through a first of the barrels and a non-cylindrical shaft extending through the second barrel. A second leaf is mounted on the pintle. A collar with a non-circular opening is provided outside the shaft. A resilient member is provided between the cylindrical part and the collar. Two channels are defined at a side of the collar facing the second barrel for alternately receiving at least one lug formed on the second barrel. Whereby, when the pintle is turned about the barrels, the first leaf can be positioned at multiple points about the second leaf.

Abstract: An auto-released hinge for a mobile phone has a barrel with two open ends. The barrel has a first flange formed inside the barrel. A first spiral slot is defined in the first flange. Two stop slots are defined in the barrel and two second spiral slots are defined between the respective stop slots and the first flange. A pintle is rotatably received in the barrel, and has a first end extending out from the barrel and a second flange formed adjacent a second end of the pintle. A protrusion is formed at an outer periphery of the pintle and received in the first spiral slot. Two ridges are formed adjacent the second flange and respectively blocked in the stop slots. A resilient member is provided outside the second end of the pintle. A fastener is positioned in the barrel to fasten the pintle and the resilient member.

Abstract: A pivot hinge for a portable electronic device is disclosed. A base plate with a pivot tube is fixed on the main unit of the portable electronic device, and a locating bracket is fixed on the movable display panel. A shaft is inserted through the pivot tube, exposing the angular section from the other end of the pivot tube. A locking piece, a spring, and a ring are sequentially inserted over the angular section to complete the spring assembly. The interlocking of the tooth and notch enables the movable display panel to be placed in the horizontal direction over the main unit. A middle section of the shaft and the pivot tube are closely mated only when two plain facets respectively formed on the shaft and the pivot tube are matched up in the rotation of the shaft, thus abrasion damage is significantly reduced.