"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 5630493 | Acceptance assembly for a reverse vending machine An acceptance assembly for a commodity collection, densification, and storage device includes a frame, an insert tube disposed in the frame defining an inlet for receiving a commodity and an outlet, a sensor disposed in the frame proximate the outlet for ... | 05/20/1997 |
| 5465822 | Commodity densification assembly having a multiple path distribution device An assembly is provided for densifying and distributing recycled commodities, such as aluminum cans, glass bottles, and PET bottles. A sensor senses a feature of the commodity, including material of composition and color. Based on the sensed material of c... | 11/14/1995 |
| 5441160 | Method of collecting densified commodities using a mobile multi-compartment commodity collection and storage assembly A method of collecting a plurality of commodities includes the steps of densifying each of the pluralities of commodities into a plurality of densified materials, collecting the plurality of densified materials into at least one of a plurality of segregat... | 08/15/1995 |
| 5355987 | Single station reverse vending machine A commodity collection, densification and storage assembly comprises a housing, an insert port in the housing for receiving a commodity, a gate mechanism adjacent the insert port movable between an open and closed position for allowing the commodity to pa... | 10/18/1994 |