Bizarre Patents
Wearable Device For Feeding and Observing Birds and Other Flying Animals
A device for feeding and observing flying animals comprising a hat, a support mounted on the hat and extending outward from the hat, and a feeder mounted on the support.
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| Number | Title | Issue Date |
| 4437540 | Loud-speaker A loud-speaker of a closed or a bass-reflex type, wherein a plurality of speaker units are intensively arranged behind an opening of a baffle board or a throat of a sounding horn with the sound wave radiating direction thereof being concentrated toward th... | 03/20/1984 |
| 4251687 | Stereophonic sound reproducing system A loudspeaker unit having an improved quality of bass reproduction for use in a stereo system with a second unit, which is a mirror image of it, to provide a better three-dimensional feeling on hearing the reproduced sound and to provide an increase in th... | 02/17/1981 |
| 4224467 | Corner mounted sound reproduction speaker apparatus A corner mounted sound reproduction speaker apparatus is adapted to be mounted in a corner space defined in part by a pair of intersecting vertical surfaces and includes a hollow enclosure housing having a base and a pair of imperforate side faces adapted... | 09/23/1980 |
| 4206830 | Vehicle speaker system provided with a passive radiator Disclosed herein is a speaker system for mounting in a vehicle wherein a passive radiator is provided in the interior of the speaker system. The speaker system is mounted on the rear window tray or shelf of the vehicle so that the radiating surface of the... | 06/10/1980 |
| 4179585 | Variable ratio full range direct-reflected pyramid inclined loudspeaker A loudspeaker system comprising an enclosure having first and second sidewalls, at least one of which is inclined to the vertical direction and at least one acoustic transducer adjacent each of the aforesaid sidewalls.... | 12/18/1979 |
| 4165797 | Adjustable high frequency sound dispersion system A loudspeaker system providing multi-directional sound distribution throughout all listening areas of a room. The system includes a housing with at least four high frequency loudspeakers arranged symmetrically about the center of the front section. High f... | 08/28/1979 |
| 4147229 | Vibratile mode speaker cabinet This invention relates to a cabinet for audio reproduction speakers of the type which have a movable speaker cone mounted within a fixed speaker frame. The cabinet includes a plurality of external cabinet members juxtaposed to form a substantially rectang... | 04/03/1979 |
| 4146111 | Speaker system A speaker system comprising a speaker cabinet having a forward baffle plate, two side plates and a rear plate, a passive diaphragm, a speaker mounted in the baffle plate of the speaker cabinet, an opening disposed in the baffle plate next to the speaker a... | 03/27/1979 |
| 4142604 | Speaker structure A speaker structure comprising a tetrahedronal shell having an upper end and an equilateral triangular base with equisized triangular walls and with the margins of the adjacent walls and base being secured together and wherein one of the walls includes a ... | 03/06/1979 |
| 4130174 | Loudspeaker A loudspeaker having precise imaging, neutrality of frequency response, and controlled mid-range and tweeter dispersion. The loudspeaker incorporates an open cell, reticulated polyurethane cartridge for placement of a supertweeter mounted in the loudspeak... | 12/19/1978 |
| 4122910 | Omniphonic microphone and loudspeaker system A triaxial or four-dimensional radiant energy transducer system is embodied in an omniphonic microphone and loudspeaker system as it relates to the sound spectrum. This is a system which is capable of detecting the location and direction of a source of so... | 10/31/1978 |
| 4122911 | Loudspeaker assembly A loudspeaker having a magnet housing and mounting flange is mounted within an enclosure including an inner member of corrugated fiberboard cut at angles to the corrugations thereof to define hingedly interconnected panels foldable to form a generally pri... | 10/31/1978 |
| 4112256 | Loudspeaker and stereophonic loudspeaker system A loudspeaker has a rectangular casing providing a frontal wall in which are mounted a plurality of speaker mechanisms responding to differing frequency ranges. The high frequency speaker is oriented so that the axis of radiation is inclined upwardly and ... | 09/05/1978 |
| 4073365 | Speaker system An audio speaker system designed to achieve multidirectional sound characteristics which includes an enclosure body having a base, front wall, two angled, forward sound directing side walls, at least one angled, inclined rear wall and a top wall which slo... | 02/14/1978 |
| 4033430 | Speaker enclosure A speaker is enclosed in furniture cabinets consisting of three units. The base cabinet, supported on legs, is a rectangular parallelepiped and accommodates a full range speaker. The top cabinet is pyramidal and accommodates a tweeter at one of its sides.... | 07/05/1977 |
| 4006311 | Stereophonic sound reproducing apparatus A loudspeaker combination comprises a rectangular casing having mounted on its top wall a midfrequency speaker and two or more high frequency speaker devices. The midfrequency speaker is oriented generally upwardly with an angle of declination of less tha... | 02/01/1977 |
| 4006308 | Loudspeaker arrangement A loudspeaker arrangement for radiating sound signals in an improved acoustical dispersion pattern includes mounting a plurality of speakers on a loudspeaker enclosure having a vertical axis. The speakers radiate sound signals in at least four directions ... | 02/01/1977 |
| 3985957 | Sound masking system for open plan office This invention relates to a system for masking conversation in an open plan office. A conventional generator of electrical random noise currents feeds its output through adjustable electric filter means to speaker clusters in a plenum above the office spa... | 10/12/1976 |
