Two slab bolster elements having rails supported on legs for carrying rebar during casting are connected end to end by a blade for sliding longitudinally of the rail into a female receptacle and a releasable locking mechanism which acts to lock the blade in the female receptacle. The locking mechanism comprises a notch on one side surface of the blade and a projecting portion of the female receptacle engaged into the notch. The projecting portion is carried on the female receptacle by a portion which can flex to cause the projecting portion to move away from the side surface of the blade. The female receptacle includes a manually depressible member on a side of the female receptacle opposite the projecting portion which when depressed provides motion toward the female receptacle which causes the projecting portion to move out of the notch.

Holder (1) for releasably connecting a handle to a tool (2), in which the holder (1) comprises a space (3) in which a handle end is introducible, in which this space (3) comprises a wall surface with one or more projecting cutting elements (5a, 5b) for cutting complementary screw thread by means of which the one or more cutting elements (5a, 5b) are releasably connectable, in which the holder (1) comprises a coupling portion (6) comprising the one or more cutting elements (5a, 5b) and a retaining portion (7), in which the coupling portion (6) is made of a first material comprising plastic and the retaining portion (7) is made of a second material, in which the hardness of the first material is greater than the hardness of the second material.

An apparatus (100), including: a hub (102) having a hub center (160); a securing mechanism (106) configured to fix the hub onto a flat surface; and an eccentric clamp disk (104). When the hub is fixed to the flat surface and nested in the eccentric clamp disk, an interlocking slip fit relationship exists between the hub and the eccentric clamp disk. The interlocking slip fit relationship enables infinite rotation of the eccentric clamp disk about the hub center and has a geometric interlock (170). The geometric interlock is configured so that when the eccentric clamp disk is pushed laterally into contact with the hub, the geometric interlock urges the eccentric clamp disk downward onto the flat surface.

A nonloosening bolt may comprise a first bolt and a second bolt. The first bolt may have a bolt head, and the second bolt may have a threaded tip. Conversely, the first bolt may have a threaded tip, and the second bolt may have a bolt head. The first bolt may comprise an eccentric columnar portion having a small-diameter male-threaded portion at an outside circumference thereof. The second bolt may comprise a small-diameter female-threaded hole that threadedly engages with the small-diameter threaded portion. Threaded engagement between the small-diameter threaded portion and the small-diameter threaded hole may result in a constitution in which the central axes and pitches of the threaded portions at the outside circumferences of the first bolt and the second bolt are aligned. An eccentric frustoconical protrusion may be provided at the first bolt so as to fit within an eccentric frustoconical hole provided at the second bolt.

Provided are a fastener that can reduce the fastener weight, decrease body shear fracture, and avoid slip of a nut part and damage of the body due to the slip. The fastener includes: a metal nut part into which a bolt is screwed along an axis; and a resin body in which the nut part is inserted, the nut part includes an internal thread part into which the bolt is screwed from one end to another, a plate-like flange part connected to a side of the other end of the internal thread part and having a flange face perpendicular to the axis, and an erected part arranged at a position apart from the internal thread part radially about the axis and erected axially from the flange face, and the internal thread part and the erected part are inserted in the body.

An adjustable connector includes at least two parts, each having a main body with an angled bore having a longitudinal axis. An external surface of the main body of a first part is configured to bear against an internal surface of the bore of a second part when the first part is at least partially inserted into the bore of the second part to form a connection. The first part is prevented from rotating within the bore of the second part via a mechanical engagement of a rotational limiting feature such as a spline, key detail, or mating ridges and grooves.

A vehicle includes an electrical system which has at least one control unit and a first operator input device operably coupled to the at least one control unit. Additionally, the electrical system includes a second operator input device electrically coupled to the at least one control unit. The at least one control unit being operative to power on at least the engine. Also, the electrical system includes a security input device operably coupled to the at least one control unit. The at least one control unit is configured to transmit an actuation signal to the security input device in response to actuation of the first operator input device independent of actuation of the second operator input device and in response to actuation of the second operator input device independent of actuation of the first operator input device.

According to one aspect of the present invention there is provided an adjustable connector including at least two parts, each having a main body with a bore having a longitudinal axis therein, wherein an external surface of the main body of a first part is configured to bear against an internal surface of the bore of a second part when the first part is at least partially inserted into the bore of the second part to form a connection, characterized in that the positioning of the bores with respect to the main bodies is such that when the parts are connected to each other, rotation of one part with respect to the other changes the inclination of the longitudinal axes of the bores with respect to one another.

A method for working a functional part, which extends in a longitudinal direction and has a lateral surface that surrounds a longitudinal central axis of the functional part running in the longitudinal direction and has an end face bounding the functional part at a free end in the axial direction, may involve pressing a punch that can be moved in the longitudinal direction of the functional part against the end face of the functional part, while the functional part is initially located in a cavity of a tool, at least over a partial portion of its longitudinal extent that adjoins its free end, which cavity is bounded in the radial direction with respect to the longitudinal central axis by a wall surface surrounding the lateral surface and lying at least partially against the lateral surface, and pulling off the tool from the functional part over the free end of the functional part over a pulling-off travel, while the punch remains pressed against the end face of the functional part, at least over a partial travel of the pulling-off travel of the tool from the functional part. A material flow of material of the functional part is brought about by the tool during the pulling-off of the tool from the functional part.

A coupling system for a vehicle includes a first coupler having an outer annual surface and an opening defining an inner surface. The outer surface and the inner surface define gripping surfaces for gripping one or more alternative vehicle attachments.