Injection unit with a piston position measurement system
US8932040B2 · kind B2 · utility
0Cited by
14References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 17, 2011 |
| Grant date | Jan 13, 2015 |
| Priority date | — |
| Expiry date | Oct 27, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2945/76187
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An injection unit includes a cylinder casing comprising an inner cylindrical surface extending along an axis, and a piston housed in the casing and translatable along the axis between an advanced and a retracted position. The piston includes a piston radial surface in facing relation to the inner cylindrical surface, and the piston radial surface has a measurement detection feature. A probe is fixed relative to the cylinder casing, the probe communicating with the measurement detection feature when the piston is in and moving between the advanced and retracted positions to measure the translation of the piston.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.