Abstract: A hold-open arrester arrangement has a low power consumption, and therefore a battery lifetime is long in the embodiments of the invention utilizing the battery. The hold-open arrester arrangement has a hold-open arrester arrangement having a hold-open function to hold a door open. The arrangement has also an electric release arrangement. The release arrangement is arranged to release the hold-open function in a fire alarm situation. The hold-open arrester arrangement comprises a sliding block and an arrester unit. The sliding block is connectable with a slide rail in a sliding manner and also pivotable connectable to an arm of a door closer. The arrester unit is connectable to the slide rail and has a body, said electric release arrangement, and said hold-open function with the sliding block.

Abstract: A hinge includes a base seat, two connecting members and two sliding members. The base seat has two first arcuate rails each extending around a first rotating axis. Each connecting member has a first sliding portion matingly engaged with and slidable along the respective first arcuate rail, and a second arcuate rail extending around a second rotating axis. Each sliding member has a second sliding portion matingly engaged with and slidable along the second arcuate rail such that the two sliding members are rotatable relative to the base seat between an initial position and a terminal position about the first rotating axes and about the second rotating axes.

Abstract: A spacer apparatus includes: a tubular base element having a sheath wall and a flange-like bottom wall portion. An inner wall portion of the sheath wall bounds a receiving space and an outer threading is integrally formed on an outer wall portion of the sheath wall. A pin passage is configured in the bottom wall. A fastening device is provided on the side of the bottom wall opposite the sheath wall for connecting the spacer apparatus to a carrier component. The spacer apparatus includes a pin element arranged in the receiving space for actuating the fastening device, which pin element extends through the pin passage, and a bowl-shaped stopper cap having an inner threading that is engaged with the outer threading and a stopper wall extending orthogonally to an axial direction. The stopper cap and the fastening device are approximately flush with one another in the axial direction.

Abstract: [Problem] The purpose of the present invention is to provide an anti-loosening metallic male screw that can exhibit a sufficient anti-loosening effect by forming a flat part and a short slope in a part of the thread bottom of the male screw and thus ensuring pressure contact between a thread peak of a female screw and the slope at the thread bottom of the male screw.

Abstract: A portable information handling system housing rotationally couples first and second housing portions with a hinge assembly having first and second breakaway brackets that define an adjacent position of the first and second housing portions relative to each other and a spread position. The first and second breakaway brackets expand the spacing between the first and second housing portions in the event that the housing portions close over an object disposed between them. The breakaway brackets bias to the adjacent position with a biasing device and a retainer that maintains the adjacent position unless a predetermined force is applied through the hinge assembly at the breakaway brackets.

Abstract: A hinge device for the controlled rotary opening and closing movement of a closing element anchored to a stationary support structure includes a fixed element and a movable element rotatable between a first open position and a closed position. The movable element includes an end portion, a working chamber, a shaft inserted therein, and a stem slidingly inserted into the shaft. A pin connects the end portion, the shaft, and the stem. The working chamber includes a working fluid for the hydraulic damping of the mutual movement of the fixed and movable elements and an elastic damping element causing the stem to abut thereagainst only when the stem is in an end-stop position, so that a user moving the closing element feels the resistance of the elastic damping element only upon reaching the first open position.

Abstract: A locknut for a threaded bolt which uses a pair of cooperating movable members that apply a three hundred and sixty degree engaging force on the threaded bolt locking the locknut to the threaded bolt. The pair of cooperating members are mounted within the body of the locknut. The locknut is the same physical size as a conventional nut that doesn't include any locking mechanism. The locknut can be loosened and reused multiple times.

Abstract: A rotating module is provided and includes two rotating arms, and a bracket having a track groove and located between the two rotating arms. Each rotating arm includes a first rotating piece, a first end of which is located in the track groove; and a second rotating piece connected with the bracket and a second end of the first rotating piece respectively. In a folded state, a rotation center of the first rotating piece is a first position on the groove wall of the track groove; in an unfolded state, the rotation center of the first rotating piece is a second position on the groove wall of the track groove. The second position is located between a center position of the track groove and the first position, and the rotation center of the first rotating piece is one rotation center of the rotating arm.

Abstract: A fixture set for fixing an accessory to a wall includes a bolt; a splitter having a sleeve portion and a wedge portion; and a metal anchor configured to be screwed to the bolt and having radially expandable arms configured to slide along surfaces of the wedge portion when the anchor is urged to slide in a first direction. The arms have a free end configured to lock the anchor against the wall upon radial expansion of the arms. The splitter has a catch situated entirely within minimum bounding cylinder of the sleeve portion. The free end of a respective arm is barbed and configured to be caught in the catch when the anchor is urged to slide in a second direction, opposite to the first direction, after having slid the anchor onto the splitter in the first direction with the barbed free end having passed the catch.

Abstract: A hinge device for supporting an electronic device includes a first portion and a second portion movable relative to the first portion with a biasing element supported by one or the first portion or the second portion. The first portion has an arcuate groove, and the second portion has an arcuate rail configured to complementarily mate with the arcuate groove and slide therein. The biasing element contacts a leading edge of the other of the first portion or second portion, and the first portion and second portion are bistable in a closed state relative to one another and an open state relative to one another based at least partially on a surface profile of the biasing element applying a radial force to the leading edge.

Abstract: A fixing device has two threaded rings (10, 12), and aa membrane (14) held between them that is an integral part of this pair of rings (10, 12) and is kept at a distance from the rings (10, 12) by introduced slots (16, 18, 24, 26), rectilinear in a unmounted state. The slots open to the outside. By resting against only partially annularly extending webs (20, 22) and having a clamping bolt (30) usable to adjust the axial distance between the and passing through the membrane (14) between two adjacent webs (20, 22), in the unmounted state the membrane is oriented in an undeformed manner in parallel to the rings (10, 12) and in a mounted state it is moved between the webs (20, 22) in a deformed state in the direction of at least one of the rings to at least partially form a slanted or arc course, as soon as the distance (a) between a pair (10, 12) of rings (10, 12) is reduced by the clamping bolt. The clamping bolt (30) passes through adjacent slots (16, 18, 24, 26) separated from the membrane (14).

Abstract: An anti-tampering device includes a housing with a bolt channel and a lock channel. The lock channel is aligned with, intersects and is perpendicular to the bolt channel. A head of a bolt and a portion of a shank of a bolt is received in the bolt channel. A lock received in the lock channel extends into the bolt channel, in proximity to the shank of the bolt, when the lock is in a locked position. The portion of the lock extending into the bolt channel prevents removal of the head of the bolt from the bolt channel.

Abstract: A control curve arrangement includes a base member having a first control curve, a switch element separate from the base member and having a second control curve, a pressure portion to be displaceably supported along the first control curve and the second control curve, and a spring device for applying a force to the pressure portion. The pressure portion, in the first operating position and in a first movement direction, is displaceable along the second control curve of the switch element. The pressure portion, in the second operating position and in a second movement direction opposite the first movement direction, is displaceable along the first control curve of the base member. A timing element is operative between the base member and the switch element, and the switch element can be transferred from the second operating position into the first operating position by the timing element in a time-delayed manner.

Abstract: An external screw member includes a parallel screw portion and a tapered screw portion provided on a side further toward a tip end than the parallel screw portion, and a plurality of sets of step portion and a transition screw thread portion are provided on at least one of the parallel screw portion and the tapered screw portion, the step portion having a reduced thread height in a radial direction and the transition screw thread portion gradually increasing in diameter from the step portion in an anti-driving rotation direction so as to reach a thread height of a normal screw thread portion. A top portion of the transition screw thread portion is positioned at an offset toward a pressure side relative to a position of a regular screw pitch in a minimum diameter portion of the step portion, and transitions to the regular screw pitch in the anti-driving rotation direction.

Abstract: A snubber includes an engagement portion with a free end configured to be removably engaged within a groove in a frame. The engagement portion includes a first engagement member and a second engagement member at least partially separated from the first engagement member. The second engagement member deflecting less than the first engagement member when a negative pressure is applied to the sash.

Abstract: A threaded fastener composed of separate upper and lower portions with a small axial freedom of movement relative to one another. After being threaded into a blind hole together, the portions are moved relative to one another and locked in place, creating a distribution of stresses which resists backing-out of the fastener without the various drawbacks which limit prior art solutions to this and similar threaded fastener applications.

Abstract: A spring nut for attaching a threaded object to a structure can include first and second arms extending from the base, and a wedge element. The wedge element can be configured to selectively operatively urge the first and second arms apart to release the threaded object from between the first and second arms.

Abstract: A hollow hinge includes a first hollow component, a second hollow component and a plurality of support assemblies. The first hollow component has a first surface and a second surface opposite to the first surface, and a plurality of concave portions are disposed on the second surface. The second hollow component is disposed on the second surface of the first hollow component and a plurality of receiving portions corresponding to the concave portions are disposed on the second hollow component. The support assemblies are respectively contained in the receiving portions and continuously butt against the first hollow component through a force. The hollow hinge avoids friction between components and strengthens support, thereby prolonging durability and improving assembly and production yield rate.

Abstract: A torque hinge module including a rotating element and a torque assembly is provided. The torque assembly rotatably sleeves the rotating element to generate torque. One of the rotating element and the torque assembly has a first bearing surface, and the other one has a second bearing surface and a third bearing surface corresponding to the first bearing surface. There is a first included angle between a plane where the second bearing surface is located and a plane where the third bearing surface have is located. A shape of the first bearing surface corresponds to a shape of the second bearing surface and a shape of the third bearing surface. When the rotating element rotates relative to the torque assembly to make the first bearing surface bear against the second bearing surface or the third bearing surface, the torque is reduced.

Abstract: An adjustable door pull to be installed on a first surface of a door that opens an entrance through which a user can walk, the adjustable door pull including a grip to allow the user to pull the door open such that the user is able to walk through the entrance, at least one detachable standoff, including an attachment portion having an aperture into which the grip is inserted, and a protruding portion disposed at a first end on at least a portion of the attachment portion to extend from the attachment portion and the grip to contact the first surface of the door on a second end opposite with respect to the first end, the protruding portion including an aperture to allow the attachment portion to be coupled to the grip, and a set screw to be inserted fully into the aperture of the protruding portion until the set screw also inserts at least partially into the aperture of the attachment portion to couple the attachment portion to the grip, and a through bolt to be inserted through a hole from a second surface o