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"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 |
| 7234603 | Swing-arm rack with drop-arm locking mechanism A swing-arm rack for storing and/or displaying hanging articles, the rack comprises a swing-arm that is pivotally attached by its upper terminus to a vertical support such that the swing-arm hangs substantially vertically in a folded configuration. The fixed terminu... | 06/26/2007 |
| 7204072 | Mechanical pruner A mechanical pruner has a hinged trimming head that allows the trimming of grape vines growing on sloped ground. The trimming head has hedgers with forward facing cutting teeth and rotating combers that open up the grape vine canopy and pull the vines into the cutti... | 04/17/2007 |
| 7092543 | One-size-fits-all uni-ear hearing instrument A one-size-fits-all uni-hearing aid is described which is adapted to fit into either ear of an ear canal of a user to a depth proximal to the tympanic membrane. The hearing aid is comprised of two half shells joined together to house the hearing aid components. The ... | 08/15/2006 |
| 7066721 | Ceiling fan motors An inside-out ceiling fan motor has a stator mounted to a downrod with an annular array of stator coils positioned about a rotor axis of rotation. A rotor is rotatably mounted about the stator. The rotor has a plurality of vanes spaced along the rotor periphery and ... | 06/27/2006 |
| 7005769 | Sleeve bearing assembly with acoustic/vibration decoupling and endplay adjustment An electric motor 10 has an armature assembly 12 coupled with a rotatable shaft 16; a clamshell frame assembly 18 including first and second halves joined together, each of the first and second halves includes locking structure 32;... | 02/28/2006 |
| 6904976 | Powered soil tillage device A powered, lightweight soil tillage device, including an elongated hollow support member having a motor and handle at the upper end thereof, and the tillage assembly mounted at the lower end thereof. The tillage assembly comprises a pair of beams which are mounted o... | 06/14/2005 |
| 5730225 | Power cultivating device with blades actuated with mirrored acuator motion A power cultivator including a power source, a shaft and a cultivating head having a pair of cultivating blades is described. The cultivating head includes an assembly that opens and closes the blades using a mirrored arcuate motion. The cultivating head ... | 03/24/1998 |
| 4736802 | Agricultural implement with orbiting knives An agricultural implement with one or more pairs of knives which are eccentrically mounted on rotary knife holders and extend from the underside of a housing which can be pulled or pushed by hand or by an engine. The knives of each pair orbit in the same ... | 04/12/1988 |
| 4648464 | Cultivating tool A cultivating tool comprises a housing, an electric motor mounted within the housing, a pair of soil working members which project from the housing, an elongate shaft connected at one end to the housing, and a handle at the other end of the shaft. The soi... | 03/10/1987 |
