Abstract: A multi-purpose door tool is designed specifically for door installation and repair. The door tool has a general “L” shape incorporating a plurality of level-indicating devices as well as measuring indicia, reference information, wedges, and lifting devices. It is also relatively small and can be produced inexpensively while remaining relatively durable and robust. The door tool can be used on a door and/or door frame to make them square and plumb; lift, wedge, and space them; check vertical and horizontal positioning and leveling; and determine appropriate measurements, locations, setbacks, etc. for door-related hardware. All of these tasks can now be accomplished with a single door tool instead of the plethora of tools formerly required to carry out all of these tasks.

Abstract: A prosthetic device, particularly useful for artificial dental implants, includes a portion, such as a tooth root, adapted for mounting to a bone tissue. The bone mounting portion has an open structure in which a bone growth stimulating biochemical matrix is contained. The biochemical matrix stimulates the growth of bone tissue into the openings of the mounting portion for firm attachment of the device.

Abstract: A system for supplying plastics material to a plastics working machine, such as a blow moulding machine comprising automatic means for removing waste from a plastics working machine, a conveyor for feeding the waste to a comminuting machine, a hopper for comminuted plastics waste, and a conveying mechanism for mixing and conveying the plastics waste and fresh plastics material to a further hopper that is arranged to supply the inlet of the plastics working machine.