A fastening element (10) for producing a blind rivet connection between components, comprising a screw (1) with a screw head (11) and a sleeve-shaped rivet arrangement (2) through which the screw (1) passes. Starting from the screw head, the rivet arrangement (2) has consecutively an installation spacer region (21), a deformation region (22) and a drive region (23) into which the screw is screwed. As seen from the drive region (23) to the screw head, the circumferential boundaries of the drive region (23) lie within the circumferential boundaries of the deformation region (22), the circumferential boundaries of the installation spacer region (21) protrude radially over the circumferential boundaries of the deformation region (22), and the circumferential boundaries of the screw head protrude radially over the circumferential boundaries of the installation spacer region (21). The installation spacer region (21) and the deformation region (22) are designed in such a manner that, as the screw is tightened, first of all plastic deformation of the deformation region (22) occurs in such a manner that the axial length thereof is shortened and the circumferential boundaries thereof are radially enlarged, and then a shortening of the axial length of the installation spacer region (21) occurs.

Taught here is a small frangible shim with handle for fine tune leveling which is wedge shaped, and pre-scored to enable an unneeded portion to be easily removed during use. Such shims are used in the construction industry utilized for adjusting the spacing of various construction members. The shim may be fashioned from any suitable material to provide stability, ease of use, and ease of manufacture. Further, the shim contains surfaces with properties of both friction to retain the shim in place once deployed and smoothness to allow the shim to slide easily into position. The shim taught here is small compared with existing shims for use in situations where delicate, fine-tune adjustments of leveling is desired.

The invention relates to an attachment device with a fastener, a first supporting disk and a second supporting disk, wherein the fastener has a head with a head contact surface and a pin extending out along a longitudinal axis, wherein the pin has an attachment end with a contact surface that is opposite the head contact surface. The first supporting disk has a suitably large opening to permit the pin to pass through the opening, and has a wedge-shaped section. The second supporting disk has a suitably large opening to permit the pin to pass through the opening and to permit the second supporting disk to turn relative to the fastener about the longitudinal axis of the pin. The second supporting disk is in contact with the wedge-shaped section and moves along the surface of the wedge-shaped section, when the second supporting disk and the fastener turn relative to each other about the longitudinal axis of the pin.

This clamping device includes a clamping collar intended to surround an element to be clamped and open so as to have two ends able to come closer to one another in order to grip the element to be clamped. This device also includes a lever, mounted tilting on the ends of the collar around a tilting axis perpendicular to a central axis of the collar, and connected to the collar by a cam system able to be actuated by tilting the lever. The cam system includes at least one pair associating a cam surface and a counter-cam surface, which are each globally helical and which are respectively connected in rotation to the collar and the lever. The cam surface of each pair includes a first surface portion, against which the counter-cam surface is pressed when the lever is in an open position and is tilted from the open position to a closed position, and a second surface portion, which is connected to the first portion and against which the counter-cam surface is pressed when the lever is in the closed position and tilted from the closed position toward the open position. The counter-cam surface includes a main part, which is helical, while being centered on the tilting axis and having a constant pitch, and which is pressed along the tilting axis against the second surface portion of the associated cam surface when the lever is in the closed position. Furthermore, the cam surface defines a bearing helix at which the bearing stresses are applied between the cam and counter-cam surfaces, this bearing helix winding around the tilting axis and extending at least partially over the first and second portions. In order to improve this clamping device, in particular for its use on rental cycles, the bearing helix of the cam surface has a helix angle that is larger on the first portion than on the second portion of the cam surface, while this second portion of the cam surface has a pitch that is substantially equal to the constant pitch of the main part of the associated counter-cam surface.

An adaptor for anchoring a second object with respect to a first object includes an anchoring part and an adjustment part. The anchoring part includes a distally facing anchoring surface and a proximally facing first control surface, and the adjustment part includes a distally facing second control surface positioned to abut against the first control surface. The anchoring part and the adjustment part define a common axis, and the first control surface or the second control surface or both is/are helical with respect to the axis, whereby a relative z position of the adjustment part with respect to the anchoring part is adjustable by rotating the adjustment part relative to the anchoring part around the axis while the second control surface abuts against the first control surface.

An adaptor is secured to a first object. The adaptor includes an anchoring part and an adjustment part. The anchoring part includes a distally facing anchoring surface and a proximally facing first control surface. The adjustment part has a distally facing second control surface positioned to abut against the first control surface. The first control surface or the second control surface or both is/are helical. Thereby a relative z position of the adjustment part with respect to the anchoring part is defined by the relative orientation of the adjustment part with respect to the common axis while the second control surface abuts against the first control surface. This is used to adjust the z position of the adjustment part relative to the first object, in connection with the orientation of the adjustment part being defined and possibly fixed by the function of the adaptor/the adjustment part

An adaptor for securing a second object includes an anchoring part and an adjustment part, wherein the anchoring part includes a distally facing anchoring surface and a proximally facing first control surface. The adjustment part has a distally facing second control surface positioned to abut against the first control surface. The anchoring part and the adjustment part define a common axis that is not perpendicular to the z direction, wherein the first control surface and possibly also the second control surface is/are helical with respect to the axis. Thereby a relative z position of the adjustment part with respect to the anchoring part is defined by the relative orientation of the adjustment part with respect to the common axis while the second control surface abuts against the first control surface.

A bicycle component is provided that is capable of suppressing rattling against a frame. The bicycle component includes a housing, a first attaching part and an adjustment member. The housing is configured to rotatably support a crankshaft. The first attaching part is provided to the housing and configured to be attached to a frame. The adjustment member has at least a portion which is configured to be disposed in a gap that is formed between the first attaching part and the frame while in a state in which the first attaching part is attached to the frame.

An expandable washer for use with a fastener to maintain tension in the fastener after connection to a component comprises first and second disks. The first and second disks cooperatively define a channel having a dimension parallel to the expansion axis which decreases from a location remote from to a location closer to the expansion axis. The first and second disks are configured to pass the fastener through them and to the component. The fastener operatively engages the first disk for moving with the first disk and to place the fastener in tension when the fastener is connected to the component. The expandable washer further includes a cam located radially outward from the expansion axis and biased for movement toward the expansion axis to drive the first and second disks apart to maintain the application of force against the fastener.

A fastener includes a shank having a threaded section with a first diameter and an unthreaded section with a second, smaller diameter. A flange is attached to the unthreaded section of the shank. A bushing has a tip, a base, and a tapered sidewall extending from the base to the tip. The bushing defines a central hole received on the unthreaded section with the base adjacent to the flange.