Torsional oscillation apparatus
US4003247A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 1975 |
| Grant date | Jan 18, 1977 |
| Priority date | — |
| Expiry date | Oct 22, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N3/38
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a torsional oscillation apparatus, for example for testing plastics, a lower clamp is arranged in torsionally-fast or non-rotating manner, for one end of a test specimen, and an upper clamp is provided for the other end of the test specimen. The upper clamp is connected securely to the underside of an oscillatory body suspended from a thread or wire which is twistable in a substantially resistance-free manner. A tautening device exerts, on one of the clamps, a force which keeps the test specimen taut. A stimulating device provides stimulating torsional oscillations of the torsion pendulum formed by the test specimen and the oscillatory body, and a transducer, cooperating with the oscillatory body, produces electrical pulses corresponding to the torsional oscillation of the pendulum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.