Acoustic horn and attachment device

Details Acoustic horn and attachment device Acoustic horn and attachment device

1988-07-18

1989-09-12

Fuller, B. R.

Acoustics

Sound-modifying means

Intensifying horn

181159, 181177, 181187, 181194, 55302, G10K 1110

Patent

active

048651591

ABSTRACT:
Disclosed is an acoustic horn to aid in bulk powdered material handling particularly from trucks and railroad cars. Such acoustic horn is comprised of an external cone having a driver affix thereto. There is also an inverted internal cone contained within the external cone. There is a cylindrical throat communicating with the acoustic wave driver which extends into the internal cone, the combination of the throat extending into the internal cone contained within the external cone creates a folded horn arrangement wherein a horn of relative shortened length can achieve the desired low fundamental frequencies needed for bulk powdered material handling.
Extending radially from the mouth of the external cone is a flange. Means are provided to detachably affix said flange from the flange on existing manways present on trucks and railroad cars.

REFERENCES:
patent: 2692913 (1954-10-01), Kaminori
patent: 2854091 (1958-09-01), Roberts et al.
patent: 2962120 (1960-11-01), Lagarias
patent: 3053031 (1962-09-01), Vedder et al.
patent: 3118748 (1964-01-01), Delfs
patent: 3158455 (1964-11-01), Lincoln
patent: 3413781 (1968-12-01), Abboud
patent: 4201556 (1980-05-01), Olsson
patent: 4529422 (1985-07-01), Phillips

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