Abstract: In a robotic tool coupler, a rotating cam member having a plurality of surfaces formed therein urges a plurality of ball members in one tool coupling unit radially to contact an angled surface in the other tool coupling unit. Further rotation of the cam member exerts a radial force through the ball members onto the angled surface. A component of that force is directed by the angled surface toward the opposite tool coupling unit, locking the two units together. The cam member may include a failsafe surface and/or a failsafe lobe to maintain the two units locked together in the event of a loss of power to positively actuate the cam member.

Abstract: A robotic tool changer comprises first and second units, operative to be separately attached to a robot and a robotic tool, and further operative to be selectively coupled together and decoupled. The first and second units are coupled and decoupled by an electric motor. Power from the electric motor may be applied to couple and decouple the first and second units in a variety of ways.

Abstract: Arrangement for holding a tool fitting has a spindle with a forward directed surface and a bore which intersects the forward directed surface and which, starting from such surface, extends rearwardly in order to receive a shaft of the tool fitting. A device for locking the tool fitting with the spindle has an inner and an outer locking element which engage on another. The locking elements act in the manner of a bayonet coupling, wherein a projecting element is disposed in a blind stop groove extending first axially and subsequently radially in a circumferential surface starting from an end face.

Abstract: Apparatus for coupling a tool holder to a machine tool spindle wherein the tool holder is fitted to a coupling interposed between the tool holder and the spindle. The coupling and the tool holder have separable fasteners for separably joining the tool holder and coupling together. The coupling can accommodate tool holders having dissimilar fasteners and the tool holder can be fitted to couplings having dissimilar fasteners.

Abstract: A direct-mail advertising package includes an acceptance form and a return mailer envelope. The acceptance form and envelope are disposed between a front and back cover, each of which may bear a promotional message. The respective peripheral edges of the package (or other peripherally-disposed portions of the package) are glued together, preferably intermittently, so that the integrity of the package may be maintained during mailing. The front and back covers are integrally joined to form a spine alongside an edge of the package, and recessed index tabs are formed on the package opposite to the spine, so that the package may be "popped" open against its adhesive retention.The acceptance form is perforated, and when torn away from the package, has outer dimensions which are less than the corresponding inside dimensions of the envelope; thus the acceptance form may be slipped easily into the envelope without folding the acceptance form. If desired, the acceptance form is made from a relatively-thin paper stock.