A curtain wall panel mounting system comprises a ball anchor seated in a spherical cavity or a cylindrical cavity with plugs nearly abutting the ball of the anchor. A stem extends from the ball to connect to the wall panel. Under seismic stress, the ball may swivel within the cavity so as to pivot the anchor, allowing the attached wall panel to angle itself to accommodate the stress.

A fixing disc (1) for initially fixing a fastening element (2) in an opening of a component to be fastened, in particular a facade panel, during mounting of the fastening element (2) and for cutting into and/or removing a defined region of a protective film on the component to be fastened during mounting of the fastening element (2) is described. The fixing disc (1) has a fixing means for initially holding the fastening element (2) in a predetermined position relative to the opening during mounting of the fastening element (2), at least one connecting means (4) for at least temporarily producing a connection between the fixing disc (1) and the fastening element (2), and at least one cutting and/or friction means (5) on that side of the fixing disc (1) which faces the component to be fastened. Furthermore, a fastening element (2) corresponding to the fixing disc (1), a system consisting of fixing disc (1) and fastening element (2), and a corresponding method for cutting into and/or removing a protective film are described.

The disclosure provides a bolt including a main body, a head portion and a thread portion. The main body has a central axis. The head portion connects the main body. The thread portion is connected to the main body and runs around the central axis. The thread portion has a bearing surface facing toward the head portion. The bearing surface is a continuous curved surface or has an inflection point. The bearing surface includes a concave curved surface, a convex curved surface and a flank surface. The concave curved surface connects the main body. The convex curved surface is located further away from the main body than the concave curved surface. One side of the convex curved surface connects the concave curved surface, and another side of the convex curved surface connects the flank surface.

A device for fastening an air spring to a body portion of a motor vehicle, at least comprising an air spring cover, wherein the air spring cover comprises at least one fastening means, by means of which the air spring can be connected to the body portion of the motor vehicle, wherein, for attachment of the air spring, the fastening means is plugged through an opening of the body portion and is fixed to said body portion in a force-fitting manner by a securing element, wherein a first and a second plastics part are provided for acoustic decoupling of the air spring, wherein the first plastics part, is clamped between the body portion and the securing element, and the second plastics part is provided so as to be positioned below the body portion.

A vibration resistant fastening system for attaching a working surface to a threaded stud, the stud extending longitudinally through a hole defined through the working surface, includes: a nut including a forward annulus, a rearward head, and a staged interior bore extending longitudinally through the head and annulus, the head including a threaded interior for engaging the threaded stud, the threaded interior of the head defining a rearward section of the staged bore. The annulus includes: an exterior including a cylindrical portion extending longitudinally forward from the head, and a tapered portion extending longitudinally forward from the cylindrical portion; at least one smooth cylindrical interior wall defining a forward section of the staged bore forward of said rearward section defined by the threaded interior of the head; and multiple slots, extending longitudinally along the annulus, each defined through the annulus from the exterior thereof to the stage bore.

A mounting structure apparatus for dynamically loaded structure joints is disclosed. The apparatus includes a first member having an aperture through a first surface and communicating with a counterbore in a second surface. A second member is included having a blind bore coaxial with the first member aperture. An insert is engageable with the counter bore, and a fastener is disclosed insertable into the first member aperture and interactive with the second member to join the first member to the second member.

A ground attachment system (1) for a tire characteristics detection unit (15).sub.7 comprises an attachment plate (2) comprising a plurality of recesses (3) distributed over the surface of the attachment plate, a plurality of frustoconical clamping rings (4), and a plurality of cylindrical guide tunnels (5) arranged in the detection unit (15), the clamping rings (4) and the guide tunnels (5) each comprising a complementary conical portion (6, 7) converging towards the attachment plate (2) when the ring (4) is in the clamping position in a tunnel (5).

A vibration resistant nut is provided for attaching a working surface to a threaded stud, the stud extending through a hole defined through the working surface. The nut includes an annulus for receiving the stud. The annulus includes a cylindrical portion and a tapered terminal end portion for being received in the hole. The tapered terminal end portion extends from the cylindrical portion. The tapered terminal end portion has an outer surface that narrows diametrically from the cylindrical portion. The nut includes a head extending from the cylindrical portion of the annulus opposite the tapered terminal end portion, the head having outer engagement surfaces for engaging a tool for rotation of the nut, the head having a threaded interior for engaging threads of the stud.

A compensating fastener assembly is configured to secure a fastener to a surface element. The compensating fastener assembly includes a compression limiter having a cylindrical main body and a flange, the cylindrical main body defining a channel and a longitudinal axis. The compensating fastener assembly further includes a spring defining a central passage. The central passage of the spring is configured to receive the main body of the compression limiter such that a first end of the spring is configured to be disposed adjacent the flange of the compression limiter.

A multi-piece locking fastener having an intermediate component exhibiting a plurality of interior threads arrayed in a first direction. A first fastener has a first enlarged head and a first stem exteriorly threaded in the first direction. A hollowed interior is formed in an end of the stem and exhibits a further plurality of interior threads extending in a second direction opposite the first direction. A second fastener has a second enlarged head and a second stem, upon which is configured a second exterior thread pattern extending in the second direction. The first fastener is installed through the intermediate component from a first direction, with the second fastener rotationally inter-engaging the exposed interior threads of the first fastener in the second direction until the second enlarged heads contact the intermediate component, with loosening of either of the first and second fasteners being prevented.