Guidance system for guiding trackless vehicles along a path defined by an A-C energized conductor
US3993156A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 21, 1976 |
| Grant date | Nov 23, 1976 |
| Priority date | — |
| Expiry date | Jan 21, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D1/28
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A pair of main coils are arranged with their axes horizontally located, for example between the wheels, and symmetrically with respect to a longitudinal vertical plane of symmetry of the vehicle; a pair of auxiliary coils are located adjacent the horizontal coils, symmetrical with respect to said plane and having axes located at least approximately in a common vertical plane transverse to the longitudinal plane of symmetry of the vehicle, the coils including with said longitudinal plane an acute angle to open outwardly in the downward direction towards the conductor, preferably in the range of between 10.degree. to 45.degree., for example about 20.degree.. The main coils are differentially connected, the auxiliary coils are additively connected, and the output signals are divided to form a proportional ratio which forms the error signal indicative of deviation of said longitudinal plane of symmetry, at the location of the coils, from the conductor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.