A centering clamping apparatus has a housing (1) with a centering element (2) mounted to be displaceable along a longitudinal axis between an open position and a clamping position. A finger element (3), mounted with centering element (2), is displaceable transversely to the longitudinal axis between a retracted position and an extended position. The finger element (3) is operatively connected to an adjusting member (4). The adjusting element (4) is mounted to be displaceable in the centering element (2). A blocking device (5) is provided on the centering element (2). The blocking device (5) either precludes a relative movement between the housing (1) and the centering element (2), with the finger element (3) fully retracted, or precludes a relative movement between the centering element (2) and the adjusting member (4), with the finger element (3) fully extended.

A clamping device includes: an operating member; a wedge having a first inclined surface; a clamping member having a second inclined surface movable relative to the first inclined surface, the first and second inclined surfaces being provided in a face-to-face arrangement; and a housing having a first guiding part, a second guiding part and a chamber. The operating member is mounted in the first guiding part, the clamping member is mounted in the second guiding part, and the wedge is disposed in the chamber; the operating member is operated to move towards the wedge, such that the operating member contacts and pushes the wedge to move, and further the first inclined surface contacts and moves along the second inclined surface; whereby a pushing force of the operating member in a first direction is converted into a clamping force of the clamping member in a second direction.

An apparatus for unilateral spinal cord compression includes a fixed member and a movable member that moves longitudinally along the fixed member by using a linear actuating mechanism to compress a portion of spinal cord encompassed by the movable member and the fixed member.

A multipurpose woodworker's clamping and spreading apparatus consisting of an elongated support bar component and a pair of elongated crossbar components held together by the respective vertically inclined and horizontally inclined sleeving elements of each of a pair of a two-way adjustable bar holder components with each crossbar holding, as well, one of each of a pair of adjustable workholder components via the horizontally inclined sleeving member of each and with each workholder component featuring an externally threaded holding bolt threadably held within the bolt holder thereof welded to the sleeving member and with the ball shaped end portion of a small rod extension from the base of the bolt, rotatably holding a shoeholder element, in turn holding a shoe element, the sleeving member portion of which features sleeving for such holding and the base member portion of which serves to hold work for clamping or spreading.

A clamp for use with a cutting machine, the clamp comprising: a clamp frame; a low profile clamp head operatively connected to the clamp frame, wherein the clamp head has a clamping surface for pressing on a work surface of a work piece to hold said work piece; and a fixing element, operatively connectable to the clamp frame, for providing a clamping force to the clamp head by fixing the clamp to a support base for the work piece. In embodiments, the clamp head may have a low profile clamp head, made of plastic to prevent damage to a cutting bit.

A clamping tool (1) is disclosed suitable for securing underwater protective shields, jackets and covers. A system is also described comprising the clamping tool and a protective shield, jacket or cover. The clamping tool (1) comprises a clamp (2), a jaw attachment (12) and a plurality of locking bolts (46). The clamp (2) comprises a first claw (20), a second claw (22), and a pivot (3). The jaw attachment (12) comprises a first tube (40) connected to the first claw (20) and a second tube (42) connected to the second claw (22). The first tube (40) and the second tube (42) comprise a plurality of holes (44) for receiving the plurality of locking bolts (46) and the pivot (3) is configured to transform a rotational torque applied by a user into a clamping pressure of the jaw attachment (12).

The present invention relates to a straight edge clamp that has a clamping head assembly and a stop assembly mounted upon the body of the straight edge. The head and stop are not connected together and the stop assembly is free to move with respect to the head assembly. The straight edge clamp body includes at least two sections that are hinged together to allow the sections to be folded upon one another when not in use and unfolded when in use.

The device (1) for locking workpieces on machine tools comprises:a base body (2) fixable to a machine tool (M) and provided with an oil hydraulic cylinder (3, 4, 5); 5a rod (8, 9) partly inserted in the oil hydraulic cylinder (3, 4, 5) slidably;roto-translation means (14, 15, 16) designed to divide the motion of the rod (8, 9) into:a first stretch (12) of roto-translation; anda second stretch (13) of translation; 10a clamp element (19, 20) associated with the rod (8, 9) and movable between:a home configuration;an intermediate configuration; andan operating configuration; 15at least a prismatic guiding body (21) associated with the base body (2) and prismatically couplable with the clamp element (19, 20) during the shifting of the rod (8, 9) along the second stretch (13).

Present invention consists of a block with a cylindrical stud and a cylindrical hole. A hex-head screw comprises a screw head portion, a middle portion and a threaded portion. The threaded portion of the hex-head screw can be fitted to the base of a clamp through the cylindrical hole, so that the clamp can freely rotate, using the cylindrical stud as a pivoting point, and the clamp's location on a welding table can be shifted to provide a proper location on the surface of a work piece.

A chuck mechanism operates a piston in a cylinder tube by using action of compressed air and opens and closes, by using a rod coupled to the piston, a pair of fingers, thereby gripping work W. The locking mechanism locks the fingers at work grip positions. The locking mechanism includes a first locking member, a second locking member, and a drive device. The first locking member is displaced when the pair of fingers are opened or closed. The second locking member retains the first locking member so as to lock the fingers at the work grip positions. The drive device relatively displaces the first locking member and the second locking member to locking positions and non-locking positions.