"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 |
| 6757944 | Side release buckle with spring A two-part buckle is provided with springing structure associated with web securing structures of the buckle parts, and with structure allowing deflection within the buckle part to at least partly absorb tensile forces applied to the buckle. ... | 07/06/2004 |
| 5100272 | Device providing detachable assembly A device for enabling a first part to be detachably assembled to a second part, the device comprising a first fastener and a second fastener fixed respectively to the first part and to the second part, assembly being obtained by engaging the fasteners alo... | 03/31/1992 |
| 4559679 | Helmut strap fastener A strap fastener for a motorcycle helmet is constructed of a unitary jacket that defines a hollow shell and latch tripping lever arms. A latching fork has a pair of resilient, generally parallel legs and can be slipped through a fabric loop which is attac... | 12/24/1985 |