An apparatus includes a housing, a spring-loaded plunger within the housing, and a spring-loaded rotating lock extending from the housing. The spring-loaded plunger includes a slot and an end portion. The end portion is configured to extend outside the housing and to be moved inward at least partially into the housing. The spring-loaded rotating lock includes a shaft, a locking pin positioned on the shaft, and a disc positioned on the shaft and having a recess. At least part of the spring-loaded plunger fits within the recess of the disc and is configured to contact the disc, and at least part of the disc fits within the slot.

One aspect is a system for securing an external structure to overlapping surfaces. The system includes a housing having a bore extending from a first surface of the housing to an opposite surface of the housing. The system further includes a rotor that has an inner bore and is arranged radially inward from the housing bore. An extending member is attached to the rotor and arranged radially inward from the inner bore. Additionally, a fastener member is engaged with the extending member.

A fastener structure and an assembling method thereof are introduced. The fastener structure includes a head portion and a body portion. The body portion is movably connected to the head portion and includes a connecting section for assembling to an intermediate member. The intermediate member includes a material retaining section and can be further connected to an object. Partial material of the object would move or flow into the material retaining section when the intermediate member is forcefully pressed against the object, so that the intermediate member and the object are connected together. Since the body portion can be assembled to the intermediate member and the intermediate member can be further connected to an object, and the fastener structure can be fastened to and released from a target object, at least two objects can be repeatedly and quickly connected to and disconnect from one another using the fastener structure.

A fastener system shifting shear stresses away from a collet body and provides clamping action to targeted structures. The fastener system includes feet in the collet body that mate with openings in a sleeve at least partially surrounding the collet body. The sleeve or the collet body includes interior threads that engage with a stud that is configured to extend through the collet body and bend the feet such that they project outward from the sleeve openings in an engaged configuration.

A fastener comprising: a) a body having: i) a first cylindrical portion with a first diameter, ii) a second cylindrical portion with a second diameter, iii) a shoulder part of the first cylindrical portion, iv) an exterior threaded portion, and v) a cylindrical hole extending along an axis of the body; b) a mandrel having: i) a shank, and ii) a mandrel head at an end of the shank; and c) a head having an opening defined by an interior threaded portion; wherein the mandrel shank at least partially occupies the cylindrical hole of the body; wherein the mandrel head is located outside of the body and opposite of the exterior threaded portion of the body; and wherein the exterior threaded portion of the body and the interior threaded portion of the head are engaged to removably secure the body to the head.

Fastener embodiments of the invention comprise a freely translatable collet body, which at least partially translates within an auxiliary structure, and further comprise a captive threaded screw for rotationally engaging with the collet body to transform rotational movement into translational movement through substantial arresting of collet body rotation by way of an anti-rotation means. The screw comprises a free-spin feature that functionally, but not physically, decouples a drive tool from the collet body.

Insertable clamp (100), for the temporary assembly of at least two drilled structural parts (200a, 200b), including a main tubular body (10) extending along a longitudinal axis X and having a bearing surface (111) intended to come into contact with a first face (201a) of the structural parts, an elastic clip (30) capable of passing through drilled aligned holes, produced in said parts, the clip being translationally moveable along the longitudinal axis, driven by the rotation about said axis of a driver nut (50) provided with a tapped bore (51) cooperating with a threaded end (31) of said clip, the clip (30) comprising two branches (32) each ending by a hooking spur (33) intended to come into contact with a last face (202b) of the structural parts, said branches transversally and progressively moving apart along a spreader (40), placed between said branches and fixed in relation to the main body (10), when exposed to the recoil of the clip, the clamp further includes a compression spring (60) placed inside the main body (10) and holding the threaded end (31) partially engaged in the tapped bore (51) so that the clip (30) remains constantly aligned with the longitudinal axis.

A fastener assembly is provided. The fastener assembly comprises, in one example, a sleeve in an enclosure, the sleeve including an interior threaded section and a sleeve opening with a periphery forming a closed shape. The fastener additionally includes a collet body at least partially enclosed within the sleeve, the collet body comprises at least one flexible leg including a foot mating with the sleeve opening, where the sleeve opening extends around the foot and a stud including a threaded section engaging the interior threaded section.

The present invention concerns a fastener (110) for the temporary assembly of at least two previously drilled structures (112) comprising: a hollow body (122) comprising a bearing surface (40); elastic clips (24) which are movable relative to the body and which form a projection relative to the bearing surface; a spacer (26) around which the elastic clips are positioned; a connecting element (130), extending within the body and secured to the elastic clips (24); and an actuating element (132) linked to connecting element by a thread/tapping (67, 84).

The connecting element is traversed by a lateral opening (70) axially extended between two closed ends (72, 74); and the fastener also comprises a transverse stop (28) secured to the spacer, the said stop being capable of sliding between the axial ends of the said lateral opening.

The present invention is concerned with improvements to removable fasteners and is particularly related to removable and re-usable fasteners for use in wet-fit applications, such as joining components that include a sealant or adhesive. A dowelling fastener (200) is provided having a head end and an insertion end and a cylindrical dowelling portion, wherein the fastener is provided with a plunger (204) at the insertion end for clearing material from a hole as the fastener is inserted into the hole, wherein the plunger is rigid and has a circular cross section with a diameter substantially the same as the dowelling portion of the fastener, the plunger tip thereby being a close fit with the hole. The plunger of the present invention is intended specifically for clearing materials from the bore and therefore has other features optimised for this purpose, including ridges around its periphery.