Position indicator apparatus and method
US8575921B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Sep 11, 2009 |
| Grant date | Nov 5, 2013 |
| Priority date | — |
| Expiry date | May 1, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B7/003
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for monitoring the movement of a piston disposed within a housing comprises a pin which is responsive to the axial movements of a piston in the housing, the pin having an end which is magnetically coupled to a first ring magnet slidably disposed on a magnet carrier of an indicator body, a second ring magnet disposed on the magnet carrier having its poles oriented so as to repel the first ring magnet, and a retainer for holding the first and second ring magnets on the magnet carrier is described. Additionally, a method for operating the cycle indicator apparatus is also provided. The housing is comprised of one or a plurality of ports through which lubricants are delivered to one or a plurality of corresponding points within a machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.