An electric clamp apparatus includes a body, a rotary drive unit which is driven rotatably by an electric signal, and a clamp arm disposed rotatably with respect to the body. By driving the rotary drive unit, a drive force is transmitted to the clamp arm through a drive force transmission mechanism, whereby the clamp arm is rotated via a link arm through a predetermined angle with respect to the body, and a workpiece is clamped between the clamp arm and a support member of the body. Further, rotational operation of the clamp arm is regulated by abutment of a sub-roller against an inclined portion of a displacement body.

A modular fixture plate system comprising: at least one interlocking fixture plate comprising at least one of a male end and a female end, wherein the male end comprises at least one male projection and the female end comprises at least one female recess; and a docking plate comprising at least one of at least one male projection and at least one female recess; wherein at least one male projection or female recess of the at least one interlocking fixture plate is interlocked with a mating one of the at least one male projection or the at least one female recess of the docking plate.

A modular fixture plate system comprising: at least one interlocking fixture plate comprising at least one of a male end and a female end, wherein the male end comprises at least one male projection and the female end comprises at least one female recess; and a docking plate comprising at least one of at least one male projection and at least one female recess; wherein at least one male projection or female recess of the at least one interlocking fixture plate is interlocked with a mating one of the at least one male projection or the at least one female recess of the docking plate.

A work holding device, such as a vice, includes first and second jaws and a spindle connected between them to change the distance between the jaws for holding a work piece. An elongated connection member extends from the first jaw and is shaped to fit into a receiver member of a receiver hitch on a vehicle. Adjustable projections are provided on the elongated connection member for reducing movement of the vice in the hitch. The adjustable projections may be set screws. An end cap is provided on the end of the elongated connection member. The work holding device may be mounted in a receiver member or bracket on a workbench or other work area.

The invention relates to a planar positioning apparatus for positioning loads on a predetermined plane, said positioning apparatus comprising:a base plate having a flat surface that extends parallel to and at a specific distance from the predefined positioning plane, thus defining same;four identical linear guides/drives which are collinearly fastened to or on the base plate in pairs parallel to the two other linear guides/drives; anda parallel kinematic unit which comprises a load platform, is disposed between the parallel linear guides/drives, and is rotationally connected to the rotors of all linear drives via one passive joint each.

The invention relates to a planar positioning apparatus for positioning loads on a predetermined plane, said positioning apparatus comprising:a base plate having a flat surface that extends parallel to and at a specific distance from the predefined positioning plane, thus defining same;four identical linear guides/drives which are collinearly fastened to or on the base plate in pairs parallel to the two other linear guides/drives; anda parallel kinematic unit which comprises a load platform, is disposed between the parallel linear guides/drives, and is rotationally connected to the rotors of all linear drives via one passive joint each.

A modular fixture plate system comprising: at least one interlocking fixture plate comprising at least one of a male end and a female end, wherein the male end comprises at least one male projection and the female end comprises at least one female recess; and a docking plate comprising at least one of at least one male projection and at least one female recess; wherein at least one male projection or female recess of the at least one interlocking fixture plate is interlocked with a mating one of the at least one male projection or the at least one female recess of the docking plate.

A modular fixture plate system comprising: at least one interlocking fixture plate comprising at least one of a male end and a female end, wherein the male end comprises at least one male projection and the female end comprises at least one female recess; and a docking plate comprising at least one of at least one male projection and at least one female recess; wherein at least one male projection or female recess of the at least one interlocking fixture plate is interlocked with a mating one of the at least one male projection or the at least one female recess of the docking plate.

A jig apparatus includes holding members on which an object to be processed is placed, which members are supported so that they are able to move in a vertical direction. The jig apparatus also includes control unit that controls positions in the vertical direction of the holding members. Control unit causes second holding members, which are selected from among holding members around first holding members on which the object is placed, to be moved to a place in the vertical direction, and to cause the first and second holding members to cooperate in holding the object.

The disclosure relates to a holder system for supporting sports equipment. The holder comprises a vise assembly comprising: a vise base; two moveable vise jaws provided with respective vise screw bores and guide bores, the two moveable vise jaws engageable with a first section on the sports equipment; a vise screw extending substantially horizontally through the vise base and oppositely disposing the movable vise jaws through the vise screw bores, and having two sections of threads allowing for movement of the movable vise jaws, the two sections being separated by a thread-free section; and one or more guide bars fixed in a substantially horizontal orientation in the vise base and extending through the respective guide bores.