Drill test fixture
US4901587A · kind A · utility
5Cited by
9References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1987 |
| Grant date | Feb 20, 1990 |
| Priority date | — |
| Expiry date | Apr 10, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23Q17/0966
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A test fixture for comparing the performance characteristics of air feed drills includes a frame and a simulated linear thrust load. Included also is a peck counter, a linear transducer for measuring stroke length, and an rpm counter. These measurements are visually displayed and may be optionally used as inputs for the calculation of various operational ratios which may also be displayed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.