Systems for recording position information in a magnetic layer on a piston rod
US7307418B2 · kind B2 · utility
61Cited by
73References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2006 |
| Grant date | Dec 11, 2007 |
| Priority date | — |
| Expiry date | Apr 24, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F10/16
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Described are system for recording piston rod position information in a magnetic layer on the piston rod. A piston rod has a magnetically hard layer formed thereon to provide a recording medium. A magnetic pattern is recorded in the magnetically hard layer. A magnetic field sensor disposed adjacent to the piston rod senses the recorded magnetic pattern while the piston rod is moving and generates signals in response to the magnetic pattern that are used to determine a position of the piston rod.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.