Bond strength tester with switchable backlash control
US8714025B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2011 |
| Grant date | May 6, 2014 |
| Priority date | — |
| Expiry date | Jun 29, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2224/859
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A bond strength testing apparatus comprising a main body, a test tool mount for holding a test tool, and an axial drive mechanism including a screw and nut assembly. The drive mechanism couples the test tool mount to the main body and allows for relative movement between the test tool mount and the main body in an axial direction. A backlash control element is coupled to the main body and the test tool mount, and, in operation, biases the test tool mount relative to the main body in an axial direction. The backlash control element is switchable between a first state in which the test tool mount is biased in a first axial direction by the backlash control element, and a second state in which either the test tool mount is biased in a second axial direction by backlash control element, or the backlash control element applies no biasing force to test tool mount. The apparatus can be automated to apply the appropriate backlash control for a particular, selected test type.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.