Elastic waveguide
US4077023A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 1976 |
| Grant date | Feb 28, 1978 |
| Priority date | — |
| Expiry date | Nov 26, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K11/24
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Elastic waves are propagated in a waveguide comprising an elongate central core region and an outer cladding region, the cladding region having a larger bulk shear elastic wave velocity than the core region. Transducers at respective ends of the waveguide couple between electrical signals and "shear" mode elastic waves in which the principal particle displacement is substantially perpendicular to a plane passing through the central longitudinal axis of the core region. The cladding region is sufficiently thick to ensure that the particle displacement profile is substantially zero at its outer surface. The waveguide is mounted in a medium suitable to mechanically support it and to protect it against external mechanical shock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.