Systems and methods of recording piston rod position information in a magnetic layer on a piston rod
US6989669B2 · kind B2 · utility
59Cited by
77References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 2004 |
| Grant date | Jan 24, 2006 |
| Priority date | — |
| Expiry date | May 6, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F10/16
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Described are a system and method of recording piston rod position information in a magnetic layer on the piston rod. A piston rod moving with respect to a cylinder 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 senses the recorded magnetic pattern while the piston rod is moving with respect to the cylinder and generates signals in response to the magnetic pattern that are used to determine an instantaneous position of the piston rod.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.