Quotables
"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
Simon Newcomb, astronomer ; Said in 1902, less than two years before the first flight at Kitty Hawk
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| Number | Title | Issue Date |
| 5950770 | Connecting element for elevator guide rail A guide rail system for guiding an elevator car or a counterweight in an elevator shaft includes a pair of Ω-shaped guide rails (1, 2) having adjacent ends connected by a connecting element. The guide rails (1, 2) have a hollow cylinder-shaped rail body ... | 09/14/1999 |
| 4823704 | Rail vehicle conveying system and rail covers therefor A conveying system having a cart traveling on a rail. A rail cover strut is disposed along the rail and a rail cover is attached to the rail cover strut. A wheel or wheels of the cart are mounted on a bracket extending to pass under the lower end of the r... | 04/25/1989 |
| 4637496 | Elevator rail system A rail system for elevators includes a plurality of omega-shaped rail sections. Adjacent sections are spliced together by a common tube, projecting into the adjoining hollow sections of rail, which is secured by clamps. The rails are mounted to a building... | 01/20/1987 |
