Digital height rod
US8109008B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2010 |
| Grant date | Feb 7, 2012 |
| Priority date | — |
| Expiry date | Nov 9, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/043
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A device and method for determining the length of an object. The device includes a height rod assembly with a uniform marker row and a non-uniform marker row detected by sensors to determine the location of the height rod assembly which is translated to the height or length of the measured object. The uniform marker row includes uniform markers of equal length spaced apart by a uniform length. The non-uniform marker row is divided into equal sections, each section including a non-uniform marker with a unique length adjacent to a non-uniform spacing with a unique length. Upon startup, a controller determines the location of the height rod assembly within a set distance of movement regardless of the position of the height rod assembly. The height rod assembly is telescoping rod assembly including sensors, uniform marker row, and non-uniform marker row for each height rod section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.