Abstract: An exercise machine is used interactively with a video monitor and an audio loudspeaker to create a physical sensation through a 3-D environment. A recumbent exercise bicycle with an attached monitor is suspended from an outer supporting frame by utilizing a four-bar linkage. A rolling action is created by pulling individually the crank and lever of the four-bar linkage; turning action, by moving the crack and lever laterally. A pitching action is created by pushing or pulling on a handlebar mounted on the outer frame. The rate of motion through the scene is achieved by pedaling. These features provide a total full-body workout interactively with computer games.

Abstract: An apparatus can withdraw a sample from a vessel or conduit or provide a sample to this vessel or conduit. This apparatus includes a main body with an inlet passage and drain passage. The main body has a longitudinal axis with the axes of the drain passage and inlet passage being inclined relative thereto. A flexible bellows is positioned within an internal cavity of the main body. A sealing tip of the bellows is movable by a valve operating rod to close an orifice to a sample cavity within the body. A sample can be taken from the vessel or conduit, through this sample cavity and out the drain passage to a sampling device when the apparatus is used as a sampler. On the other hand, a sample can be fed through the inlet passage, sample cavity and orifice to the vessel or conduit when the apparatus is used as a feeder/inoculator. Steam, pure dry air and/or a wash medium can be provided through the inlet passage to cleanse the apparatus.