Horizontal and vertical displacement detector of wire rope
US5581180A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Nov 3, 1994 |
| Grant date | Dec 3, 1996 |
| Priority date | — |
| Expiry date | Nov 3, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61B12/02
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A displacement detector detects a relative position between a wire rope and a pulley of a transfer apparatus. The detector includes a magnet disposed to face the wire rope, two magnetoelectric conversion units disposed relative to a pitch of lays of the wire rope to produce two output voltages having ripple components caused by the pitch of lays and being opposite to each other in terms of phase, and a circuit unit connected to the magnetoelectric conversion units for detecting displacement degrees of the wire rope from the pulley according to the output voltages and adding the output voltages so that said ripple components of opposite phases offset each other thereby removing effects of said pitch of lays.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.