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An aircraft having vertical takeoff and landing capability provided with at least first and second laterally extending paddle wheels rotatable on a central axis perpendicular to the longitudinal axis of the aircraft fuselage and between its nose and tail.
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| Number | Title | Issue Date |
| 7394553 | Integrated measurement device An integrated measurement device for taking gauge and cross-level measurements between two objects. The integrated measurement device includes at least an emitter/receiver unit, a sensor unit, and a microprocessor. In operation, the integrated measurement device is ... | 07/01/2008 |
| 7254896 | Inner bearing split axle assembly A split axle assembly for obtaining gage measurements of a track including a first wheel with a first split axle, a second wheel with a second split axle, a first bearing for rotatably receiving the first split axle, and a second bearing for rotatably receiving the ... | 08/14/2007 |
| 6588114 | Measuring pump device A light weight compact device used in a rail road track maintenance organization carried by a track inspector to measure the vertical difference in track or rail of the track under normal operating conditions of trains which does not obstruct the travel o... | 07/08/2003 |
| 6415522 | Vehicle for measuring the geometric condition of a railway track A measuring vehicle (V) allows the geometric condition of a railway track to be measured in relation to its theoretical configuration. In comprises a rigid chassis (9) making up the measuring base, supported by runners (10, 11,12) and a probing device (13... | 07/09/2002 |
| 5720110 | Configuration for detecting gaps in a conductor rail for electric rail vehicles being fed through conductor rails A configuration for detecting gaps in a conductor rail for electric rail vehicles being fed through conductor rails, includes a proximity switch. A component of a current collector can be pressed against an activation element of the proximity switch if a ... | 02/24/1998 |
| 5397083 | Rail guard A rail guard for monitoring the limits of transverse inclination and extension between the rails of a railroad track and transmitting an indication when these limits are breached. The rail guard has a plurality of tension switches, each switch being coupl... | 03/14/1995 |
| 5203089 | Railroad vehicle for measuring the geometrical parameters of railroad track The invention relates to a railroad vehicle for measuring the parameters of a railroad track, characterized by the presence of third axles (13 and 23) with independent wheels and disposed between the main axles (11 and 12; 21 and 22) of the bogies (10 and... | 04/20/1993 |
| 5199176 | Apparatus for the non-contact measurement of a track gage Apparatus for the non-contact measurement of the gage of a track comprises a machine frame equipped with undercarriages supporting the machine frame for mobility on the track and a wheel axle having wheels running on the track rails, and an optical sensor... | 04/06/1993 |
| 5161312 | Machine for monitoring the vertical position of a contact wire of an overhead line In a machine for monitoring the vertical position of a contact wire of an overhead line extending above a track, which comprises a self-propelled machine frame including a superstructure, an undercarriage supporting the machine frame on the track and havi... | 11/10/1992 |
| 5111749 | Apparatus for placing a carriage on a track An apparatus for placing a carriage linked to a frame of a track working machine on a track comprises a rail sensing element mounted on the carriage for sensing a respective track rail, the rail sensing element being positioned in the radial plane of the ... | 05/12/1992 |
| 5094004 | Railroad track gager/leveler/linear measurer An instrument for measuring railroad track geometry for a pair of tracks. e instrument includes a carriage having wheels for permitting the carriage to ride on one of the tracks. An elongated cross-level bar has one end mounted on the carriage and the oth... | 03/10/1992 |
| 5025566 | Electronic gage and levelmeter The new instrument is a three piece frame which folds into a compact, hand carried device and when opened forms a track spanning frame. In its open position the frame carries on its midsection an electronic levelmeter and the track gage meter or indicator... | 06/25/1991 |
| 5009014 | Railroad rail profile measuring system An apparatus for measuring the profile of a rail head includes a base, an actuating unit, a carriage and a sensing device. These components cooperate to laterally move the sensing device across the width of the rail as it is moved longitudinally along the... | 04/23/1991 |
| 4654973 | Railroad track gage Apparatus for continuously monitoring the gage of a railroad track from a vehicle on said track comprising measurement means which continuously measure the distance between the rails of a railroad track and remote indication means which display data of sa... | 04/07/1987 |
| 4625412 | Apparatus and method for measuring the wear of railroad rail An apparatus and method is provided for measuring the wear in the cross-sectional profile of a railroad rail. A carriage is adapted for travel along the length of the rail and includes means for moving transversely with respect to its direction of travel ... | 12/02/1986 |
| 4554624 | Railroad measuring, gauging and spiking apparatus A railroad measuring, gauging, and spiking apparatus uses a closed servoloop arrangement to provide accurate rail gauging. An LVDT sensing arrangement uses three rail feeler wheels to sense the rail gauge immediately adjacent to spiking guns on the appara... | 11/19/1985 |
| 4301738 | Apparatus for the replacement of rails of a track An apparatus for the continuous replacement of track rails comprises a forward and a trailing track renewal vehicle, which may have a common frame. The rails are unfastened and removed from a first track section on which an undercarriage supports the forw... | 11/24/1981 |
| 4288926 | Longitudinal rail profilometer Portable apparatus for use in measuring vertical deviation of the surface of a rail from a reference plane. The measuring device includes a pair of guide beams and a hand-powered carriage which move along the beams. A sensor, which follows undulations res... | 09/15/1981 |
| 4155176 | Process and apparatus for measuring the geometric state of a railway track during correction thereof The invention is a process and a device for measuring and registering the geometric state of a track in the course of alignment of the track with an aligning machine. The distance between a point on the already aligned track and a straight line defined by... | 05/22/1979 |
| 4109388 | Needle indicator for rail liner An indicator mechanism for an apparatus for correcting the existing grade and horizontal alignment of railroad track in accordance with a wire reference system. The mechanism includes frame means, the position of which in use is referenced to the existing... | 08/29/1978 |
| 4027397 | Mobile track surveying apparatus A mobile track surveying apparatus comprises two spaced-apart bogies. Track gage and superelevation measuring devices as well as track grade and lateral alignment measuring devices are mounted on the two bogies, the latter including a theodolite mounted o... | 06/07/1977 |
| 4026034 | Needle indicator for rail liner An indicator mechanism for an apparatus for correcting the existing grade and horizontal alignment of railroad track in accordance with a wire reference system. The mechanism includes frame means, the position of which in use is referenced to the existing... | 05/31/1977 |
