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"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 |
| 5823481 | Method of transferring control of a railway vehicle in a communication based signaling system A method is provided for transferring control of a railway vehicle from a controlling wayside controller that controls a first zone within which the railway vehicle was previously positioned, to an adjacent wayside controller that controls a second zone w... | 10/20/1998 |
| 5812102 | Vital monitoring system for seven-segment display used in railroad applications A system and method of monitoring light emitted from a light emitting diode (LED) display device, which typically has a plurality of selectively energizable display segments which are grouped to form desired shapes and/or alphanumeric characters, is provi... | 09/22/1998 |
| 5785283 | System and method for communicating operational status of a railway wayside to a locomotive cab A system and method of communicating via digital radio between a train and a device positioned at the wayside of a railway system, wherein the device detects defects at the wayside and information related to the defects is transmitted from the wayside to ... | 07/28/1998 |
| 5764162 | Micropower impulse radar based wheel detector A wheel detector for indicating the presence of a rail vehicle on a set of spaced rails is disclosed. The wheel detector transmits a radar pulse signal and samples a portion of the signal corresponding to a target area on one of the rails. The wheel detec... | 06/09/1998 |
| 5747954 | Highway crossing guard mechanism controller A highway crossing gate control circuit is provided which minimizes the "pumping" oscillation of a highway crossing gate arm which is driven up by a permanent magnet motor. A preferred embodiment of the control circuit utilizes a p-channel MOSFET in a pow... | 05/05/1998 |
| 5746399 | Car space measurement apparatus A car space measurement apparatus for tracking a rail vehicle position on a track is provided, which includes a wayside sensor and a supervisory processor. The wayside sensor senses multiple track parameters that are representative of the rail vehicle pos... | 05/05/1998 |
| 5697584 | Railroad searchlight signal with solid state illuminant and aspect indication A railroad searchlight signal for producing light signals of selected colors. The searchlight uses a reflector that has an inner surface of reflective material and a focal point. One or more light emitting diodes are provided at the reflector focal point.... | 12/16/1997 |
| 5675868 | Latching device for a door of a railway train stop housing A latching device is provided for releasably retaining in an upright and open position, a hinged door which is typically manufactured of a heavy cast iron and hinged to a train stop housing, thereby to prevent the unintentional and accidental closure of t... | 10/14/1997 |
| 5659137 | Decelerometer A decelerometer is provided for detecting and measuring inertial deceleration and acceleration of a vehicle moving in a first direction and alternatively moving in a second direction which opposes the first direction. The decelerometer uses a tilt sensor ... | 08/19/1997 |
| 5639047 | Railroad signal with remote light source An apparatus for providing a light signal to a signal unit at an overhead location along a railway signal structure, particularly a cantilever signal structure having a vertical mast and an arm assembly extending therefrom. Signal units may be located alo... | 06/17/1997 |
| 5595262 | Electrically operable oiler for motorcycle drive chain An electrically pumped oiler attachable to the frame of a conventional motorcycle is provided for discharging oil to a motorcycle drive chain, particularly while the motorcycle is in motion. The oiler has a conventional electrically operable pump mounted ... | 01/21/1997 |
| 5531515 | Auxiliary brake system for four-wheel-drive vehicle An auxiliary brake system for a four-wheel-drive vehicle is disclosed whose main components of the present invention are four solenoid valves. These valves are located under the body of the vehicle, and are affixed in communication with the existing vehic... | 07/02/1996 |
| 5509764 | Cargo securing system for pick-up trucks A cargo securing system is provided wherein the system comprises a crossbar member attached to a beam member with ends adapted to concurrently cooperate in a slidable manner with opposing channels defined by a pair of U-shaped channel tracks. The channel ... | 04/23/1996 |
| 5482239 | Portable attachment bar for attaching an intravenous container support apparatus to a patient transportation apparatus An attachment device is provided wherein the device is designed to connect intravenous container support apparatus to various medical transport and patient care devices such as wheelchairs, hospital-style beds, transport carts for emergency room and outpa... | 01/09/1996 |
| 5423708 | Multi-legged, walking toy robot A robot in the form of a toy simulating a spider is provided wherein the robot is capable of maintaining balance while walking, turning and running in a race-type setting on level ground and over a ramp or small obstacles. A preferrred embodiment of the r... | 06/13/1995 |
| 5258863 | Method for effecting illumination of an arbitrary aperture The present invention discloses a novel method for effecting illumination of an arbitrary aperture. The method comprises a first step of providing a developed hologram comprising a plurality of spatially known discrete holographic optical elements that ha... | 11/02/1993 |
| 5251476 | Method for determining a coefficient of moisture expansion of a workpiece A novel method for determining a coefficient of moisture expansion of a single, identified workpiece or coupon. The method includes the steps of positioning the workpiece in a chamber having known environmental parameters; determining a workpiece length c... | 10/12/1993 |
| 5249456 | Assembly suitable for determining a coefficient of moisture expansion of a workpiece An assembly for determining a coefficient of moisture expansion of a single, identified workpiece or coupon. The assembly includes means for positioning the workpiece in a chamber having known environmental parameters; means for determining a workpiece le... | 10/05/1993 |
| 5221834 | Method for providing feedback correction for an imaging device A method for assessing and correcting via feedback, the optical quality of an imaging device. The method has an advantage of expanding the applicability of a classical optical transfer function, heretofore a measure only of global imaging device performan... | 06/22/1993 |
| 5183252 | Vaccum drum for different sized media A vacuum drum for securing and retaining different sizes of flexible sheet media has cylindrical surface holes connection different sets of longitudinal bores connected to right and left end radial bore distribution rings. The rings are adapted to be sele... | 02/02/1993 |
