Abstract: An adjustable wrench includes a handle including a notch defined therein. A driving head is pivotally fixed to the handle for engaging an object that is driven by the adjustable wrench. The driving head and the handle include first and second springs engaged therebetween. The first and second springs each include a first end abutting against the handle and a second end abutted against the driving head, respectively. The notch receives the first and second springs. Coils of the second spring are disposed within a space delimited by the coils of the first spring. One of the first and second springs is coiled clockwise from the first end to the second end thereof, and the other of the first and second springs is coiled counterclockwise from the first end to the second end thereof.

Abstract: A set of a bolt and a nut having a rotation prohibiting mechanism comprises a foldable part (30) at the tip of a bolt (20), that can be folded around an axis perpendicular to a bolt axis. A tip portion (30) can be folded to either sides with the direction extending along the bolt axis as a center. Grooves (18a-18g) for storing the foldable part (30) are formed on a tip surface (a surface from which the tip of the bolt projects out when the bolt and the nut are tightened) of the nut (12) or the knob (18). A number of the grooves is an odd number. The grooves are arranged radially with equal angular intervals with a center at a screw hole of the nut. For example, seven grooves are arranged radially with equal angular intervals. In this case, the angle between adjacent two grooves is about 51.4 degrees, and this angle is to be an expected angular resolution of the rotation prohibition. However, according to the above mentioned set of the bolt and the nut, the expected angular resolution can be halved (i.e. 25.

Abstract: An apparatus for preventing removal of, or tampering with, a construction fitting includes two construction element engaging components and a fastener for connecting the two construction element engaging components to one another. The fastener includes a bolt extending between the two construction element engaging components and a nut for tightening on the bolt rigidly connecting the two engaging components with a gap therebetween. A body portion, for at least partially covering a nut, prevents access thereto by an unfastening tool with the body portion extending from the nut to a position alongside the bolt within the gap. A locking device is able to be moved relative to the body portion between a first position, in which the apparatus is removable from the construction fitting, and a second position in which the apparatus is prevented from being removed from the construction fitting with the locking device extending, in the second position, from the body portion in a direction toward the bolt with the gap.

Abstract: A fastening device is disclosed, which has a slotted shaft, a hooking mechanism coupled to the shaft and adapted to couple the shaft to a supporting structure. The hooking mechanism deploys to an operational position from the end of the slotted shaft and is adapted to couple the slotted shaft to a supporting structure. A tightening mechanism is adapted to couple to the shaft. The tightening mechanism binds the fastening device securely in place.

Abstract: A fastener device comprising a nut, a threaded member for receiving the nut, and visual indicator means for visually indicating if the nut has become loose on the threaded member during use of the fastener device. The visual indicator means may comprise an indicator member which is mounted on the nut, biasing means which biases the indicator member to an indicating position in which the indicator member gives a visual indication that the nut has become loose, and at least one recess into which the indicator member is moved by the biasing means consequent upon the nut becoming loose, the indicator member then being in the indicating position.

Abstract: Nut with positive and micrometric locking intended to be screwed on a shaft (1)(23)(60)(70) comprising a serrated part (2)(24)(59)(72) and locking segments (15)(37)(44)(75) having each one at least one tooth (19)(41)(58)(76), and which are intended to fix in rotation the nut (4)(26)(54)(73) on the shaft (1)(23)(60)(70), said locking segments (15)(37)(44)(75) being movable between a first locked position and a second unlocked position, the locking segments (15)(37)(44)(75) being constantly and independently radially stressed by a torical spring (21)(43)(45)(78).

Abstract: A self-locking nut designed to work with a male thread's that have a slot, keyway or hole along their threads. A novel locking ring (13) placed in a cavity (23)in one end of the nut. One or more fingers (24) on the locking ring lock into a slot, recess, hole or keyway in the male thread and multiple projections on the clip lock into recesses (22) in the female component. By locking the male component to the clip and the female component to the clip the device locks the male component to the female component.

Abstract: An anti-rotational joint for connecting sections of cnduits together to form a flowline or the like wherein the joint includes a means that prevents the joint from accidentally unscrewing after it is made up to its desired torque.

Abstract: A fastener for locking two objects in a predetermined relationship. The fastener has a fastener body including a spacer which defines a predetermined distance between the two objects. A first locking element is on one side of the spacer and a second locking element is on the other side of the spacer. The fastener body is adapted to receive a plunger which is adapted to travel from a retracted position to a secured position. The plunger causes the first and second locking elements to rigidly affix the objects to the fastener body thus holding the objects a predetermined distance from each other.