Method of measuring tension in a fastener
Abstract
Abstract AN APPARATUS AND METHOD FOR MEASURING TENSION IN A THREADED FASTENER SUCH AS A BOLT. TENSION IS MEASURED BY DETECTING THE DEFLECTION OF THE INTEGRALLY FORMED TOP SURFACE OF THE BOLT IN THE DIRECTION OF THE AXIS OF THE BOLT SHANK, BETWEEN A FIRST REFERENCE SURFACE ON THE AXIS OF THE SHANK AND A SECOND REFERENCE SURFACE RADIALLY REMOVED FROM THE AXIS. PNEUMATIC, ELECTRICAL AND MECHANICAL METHODS AND APPARATUS FOR SENSING AND MEASURING THE TENSION IN THE FASTENER AS A FUNCTION OF THE MOVEMENT OF THE CENTRAL REFERENCE SURFACE RELATIVE TO THE PERIPHERAL REFERENCE SURFACE, RE DISCLOSED. ALSO DISCLOSED IS A SERVOMECHANISM IN COMBINATION WITH THE APPARATUS FOR SENSING THE TENSION IN THE FASTENER WHICH ACTS TOK INITIATE A SECONDARY OPERATION SUCH AS SHUTTING OFF A MOTIVE POWER MECHANISM DRIVING THE F ASTENER WHEN A PREDETERMINED TENSION HAS BEEN REACHED.
Inventors
- 👤 Harold C Reynolds
Bibliographic Details
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| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |