Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1976-03-25
1977-08-16
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310368, H01L 4104
Patent
active
040428451
ABSTRACT:
A transducer assembly capable of radiating and detecting energy over a controlled beam width around a selected axis is formed by a piezoelectric element mounted in a cylindrical resonant cavity defined by a Helmholtz chamber. The resonant chamber has an energy emitting end wall positioned normal to the selected axis and is arranged to have a single aperture ring which emits energy symmetrically around the axis at a predetermined radial offset distance therefrom. The energy emitted from the chamber through the end wall sums to form along and around the selected axis a beam-like pattern of controlled width, the beam width being controllable as a function of the offset distance and the energy wavelength. In one embodiment, circular apertures which operate to emit spherical radiation patterns are formed in the chamber end wall. In another embodiment, an annular aperture is formed in the chamber end wall concentric with the selected axis.
REFERENCES:
patent: 2567407 (1951-09-01), Slaymaker
patent: 2580439 (1952-01-01), Kock
patent: 3331970 (1967-07-01), Dundon et al.
patent: 3748502 (1973-07-01), Bernstein
patent: 3860838 (1975-01-01), Kumon
patent: 3873866 (1975-03-01), Goble
patent: 3965455 (1976-06-01), Hurwitz
Budd Mark O.
Sontrix Division of Pittway Corporation
Wymore Max L.
LandOfFree
Transducer assembly and method for radiating and detecting energ does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Transducer assembly and method for radiating and detecting energ, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transducer assembly and method for radiating and detecting energ will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-363355