Abstract: A fixed, detachable dental attachment device has a cap for securing a dental appliance, a ring, and an abutment to attachment to a tooth root or implant. Also described herein are methods of securing a dental appliance in a subject's mouth by means of the dental attachment device. Further described herein is a dental attachment device for immediate load on a provisional denture and then incorporated into the final restoration.

Abstract: A pipe connection arrangement for connecting two pipe ends arranged in an exhaust line of a combustion engine, the two pipe ends being aligned axially with respect to one another and/or are spaced apart and, on the outer circumferential surface thereof, each have a raised spherical segment in a ring shape. The spherical segments are accommodated in a connecting pipe which surrounds the pipe ends in an overlapping section such that the circumference of the raised spherical segments rests radially on an inner wall of the connecting pipe in a spherical-segment contact region.

Abstract: The invention provides an upright vacuum cleaner with a swivel and swing handle fitted to the upper end of the upright portion of the vacuum cleaner using a ball and socket joint and a connecting bolt. Because of the ball and socket joint and a spiral spring surrounding the connecting bolt between the ball and socket joint and the upper end of the upright portion of the vacuum cleaner, the handle can freely swivel and rotate at any angle relative to the upright portion to provide enhanced flexibility in maneuvering the vacuum cleaner, thus effectively reducing the bodily stress and strain involved in using a vacuum cleaner.

Abstract: The present invention is a computer controlled display device. In one embodiment, the display device includes a flat panel display having an input for receiving display data. Additionally, a moveable assembly may be coupled to the display. The moveable assembly may provide at least three degrees of freedom of movement for the flat panel display device. Additionally, the moveable assembly may have a cross-sectional area, which is substantially less than a cross-sectional area of a display structure of the flat panel display.