Abstract: A hinge includes a first connecting member, a second connecting member defining a through hole, a sleeve member fixed to the second connecting member, a shaft movably mounted to the first connecting member, and a fastener. The sleeve member defines a spiral slide groove therein. A clamping protrusion extends from the first connecting member for slidably engaging in the slide groove. The shaft includes a fixing portion rotatably passed through the sleeve member and the through hole. The fastener is fixed to a distal end of the fixing portion.

Abstract: A hinge assembly (100) includes a cam (13), a follower (14), a first spring (12), a press rod (17), a control member (18) and a second spring (16). The cam has a cam surface. The follower has a latching cam surface engaging with the cam surface. The first spring provides an elastic force causing the cam surface of the cam and the latching cam surface of the follower to abut each other. The press rod includes a threaded portion (173). The control member threadedly engages with the threaded portion of the press rod. The second spring provides an elastic force to return the control member. When the press rod is pushed, the control member rotates to cause the follower to rotate whereby the cam surface of the cam rotates relative to the latching cam surface of the follower.

Abstract: A collapsible device includes a base, a cover, and a hinge. The hinge includes a first connecting member fixed to the base, a second connecting member defining a through hole, a sleeve member fixed to the second connecting member, a shaft movably mounted to the first connecting member, and a fastener. The sleeve member defines a spiral slide groove therein. A clamping protrusion extends from the first connecting member for slidably engaging in the slide groove. The shaft includes a fixing portion rotatably passed through the sleeve member and the through hole. The fastener is fixed to a distal end of the fixing portion. The second connecting member is fixed to the cover. During the rotation of the cover relative to the base via the hinge, the cover is synchronously moved transversely relative to the base along the axial direction of the hinge.

Abstract: A hinge assembly (10) includes a shaft (12) and a follower (16), wherein one of the shaft and the follower defines a thread (122), the other of the shaft and the follower includes at least one resisting portion (166). The thread is separately formed from one of the shaft and the follower with the thread and the shaft and the follower slide and rotate relative to each other. Since the thread is separately formed therewith, the thread may be formed by injection mold. This manufacture method is easy. In addition, the thread may be made of wear resistant material. The thread is not easy to be abraded, thereby the work being stable.

Abstract: A movable member (not shown) non-turnably connected to a second hinge member is arranged on the turning axial line of first and second hinge members such that the movable member is turnable and movable in the direction of the turning axial line. The movable member is biased toward the first hinge member by a coiled spring (not shown). A confronting surface of the first hinge member with respect to the movable member is provided with a pair of raised wall surfaces 11d, 11d extending in the direction of the turning axial line and end face cams 41 arranged between the pair of raised wall parts 11d, 11d, respectively. A confronting surface of the movable member with respect to the first hinge member is provided with a pair of abutment arm parts 42a for converting the biasing force of the coiled spring to a turn biasing force for turning the movable member by being press-contacted with the end face cam 41. A recess 11e is formed in a lower part of the raised wall surface 11d.

Abstract: The adjustable self-closing hinge (1) comprises a first hinge part (2), a second hinge part (3), a hinge shaft (10), a torsion spring (18) having a first end (19) fixed with respect to the first hinge part (2) and a second end (20) fixed with respect to the hinge shaft (10) to exert a moment onto the first hinge part, and means for adjusting the moment exerted by the torsion spring on the first hinge part. These adjusting means comprise a coupling element (21) which is interposed between the first end (19) of the torsion spring (18) and the first hinge part (2) and which is rotatably mounted in the first hinge part, and a screw-like element (24) which is rotatably mounted in the first hinge part (2) and which is arranged to cooperate with the coupling element (21) to rotate the coupling element with respect to the first hinge part so as to adjust the moment exerted by the torsion spring on the first hinge part.

Abstract: An automatic hinge having an upper or left hand section with an arcuate interior or lower edge, a central section with an arcuate left hand or upper edge and an arcuate right hand or lower edge, and a lower or right hand section with an upper or interior edge. The sections are preferably cylindrical and the edges generally elliptical. A drive moves the central section linearly between the upper and lower sections. As the central and upper sections engage, the central section will rotate in one direction. As the central section engages the lower section, the central section will rotate in the opposite direction. A gate is preferably attached to the central section. By linearly moving the central section, the gate is lifted and turned. The preferred configuration allows the hinge to open a gate inward or outward in both a left hand mount and a right hand mount.

Abstract: A system for mounting a sign or graphic display to a structure allows rotation of the graphic display and provides for automatic return to the initial orientation.

Abstract: A gravity hinge is disclosed that is simple to manufacture and avoids limitations found in known gravity hinges. The hinge includes two cylindrical knuckles joined by a spindle and separated by a polymer bushing. The junction of the knuckles and the bushing is at an angle oblique to the vertical axis of the knuckles and spindle. The oblique angle causes the upper knuckle to rotate upward upon the application of a rotational force thereby storing potential energy. Upon the release of the rotational force the upper knuckle falls or (rotates) back into place thereby returning the hinge to its natural, closed position.

Abstract: A double-acting door closure device that automatically returns a double-acting door to a preferred center position comprises first and second members each having a helical end surface extending transversely of its center axis. The first member is secured in spaced relation to a door jamb and the second member is mounted on and secured to a door post that extends through and is rotatable in the first member, with the helical end surface of the second member facing and engaging the helical end surface of the first member. The helical end surfaces coact with one another to gravitationally return a door attached to the door post to a closed position automatically after the door has been pushed opened and then released.

Abstract: A hinge device for pivotally coupling a display (70) to a base (80) of an electronic device. The hinge device includes a seat (30) securing in the base and a rotor (40) attached to the display. The seat defines a center through hole (35) therein and a railway (36) in an inner wall of the seat. The rotor includes a shaft (42) pivotally received in the center through hole of the seat and a pair of opposite beams (43) connecting to the display. At least one socket (45) is defined in an outer wall of the shaft. A roller (50) is tightly held between the socket of the rotor and the railway of the seat. The roller moves along the railway when the rotor rotates in the seat. The display swivels relative to the base and alters the vertical distance from the base.

Abstract: A butt mounted riser hinge has a plastic cam assembly mounted in two metallic cylinders so that their camming surfaces do not rub against the metallic cylinders and become readily worn. The cam assembly includes a male member with bevelled end that is rotatably received in a cup-shaped female member. The hinge further includes a spring and shell assembly in sliding arrangement with one of the metallic cylinders.

Abstract: An automatic return hinge having a primary and a secondary hinge, the primary hinge being furnished with an axle rod with spiral grooves, three locating balls in an axle sleeve roll along the spiral grooves on the axle rod as the door is opened and closed.