Abstract: An attachment surface for an implantable device has a random irregular pattern formed through a repetitive masking and chemical milling process. Surface material is removed from the implant surface without stress on the adjoining material and the process provides fully dimensional fillet radii at the base of the surface irregularities. This irregular surface is adapted to receive the ingrowth of bone material and to provide a strong anchor for that bone material. The unitary nature of the substrate and surface features provides a strong anchoring surface with is resistant to cracking or breaking. The surface is prepared through an etching process which utilizes the random application of a maskant and subsequent etching of the metallic substrate in areas unprotected by the maskant. This chemical etching process is repeated a number of times as necessitated by the nature of the irregularities required in the surface.

Abstract: A fully automatic stationary wrapping mechanism is utilized in conjunction with an upstream palletizing device and a downstream distribution system. An inbound zone accepts palletized materials and selectively passes them along to a wrap zone. An outbound zone provides a direct link with the wrapping device in any downstream distribution conveyor system. The apparatus provides a relatively short, straight pathway from the point of construction of the loaded pallet through the wrapping station to the outbound conveyor. An improved film gripping device is provided as an elongated arm, extendable from a home position outside the wrapping area to within the wrap zone in order to grip the film, and such that the specific location of the free end of film is not particularly critical.