Hydraulic cylinder rod position sensing method
US7982459B2 · kind B2 · utility
7Cited by
18References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2009 |
| Grant date | Jul 19, 2011 |
| Priority date | — |
| Expiry date | Jan 15, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B15/2861
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method for detecting a position of a cylinder rod includes depositing a plurality of welds substantially along the length of a steel rod and depositing a corrosion resistant material onto the steel rod by laser cladding. The cylinder rod is then placed proximate to a sensor assembly. One of the cylinder rod and the sensor assembly are moved relative to the other. The sensor assembly detects a change in properties between the steel rod and the welds and generates a corresponding signal. A change in position of the cylinder rod or damage to the cylinder rod can be detected by analyzing the number and strength of the signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.