BALANCING MEANS FOR A ROTATING SPEAKER SYSTEM

• US 3,797,606 A
• Filed: 02/12/1973
• Issued: 03/19/1974
• Est. Priority Date: 02/12/1973
• Status: Expired due to Term

• Current Assignee: Marmon Company
• Original Assignee: John W. Edwards
• Inventors: Edwards, John W.
• Primary Examiner(s): Tomsky, Stephen J.
• Application Number:
  US05/331,686
• Time in Patent Office: 400 Days
• Field of Search: 181/27A,31B 179/1J 84/1.25
• US Class Current: 181/143
• CPC Class Codes: G10H 1/047 by acousto-mechanical means, e.g. rotating speakers or sound deflectors

Abstract

A rotating speaker system comprising a rotating cylindrical housing having a speaker therein on one side of the axis of rotation and an adjustable counterbalance on the opposite side of the axis of rotation externally adjustable for both static and dynamic balance.

Claims

1. A counterbalance for a rotating speaker system which includes an enclosure having a peripheral wall, end walls, means associated centrally with said end walls for supporting said enclosure for rotation and defining an axis of rotation, and a speaker mounted in said peripheral wall;

comprising a counterbalancing member, means mounting said member within said enclosure opposite said speaker for bodily translation toward and away from said axis and for pivotal movement on an axis in a plane normal to said axis of rotation to vary the angle between the axis of said member extending between said end walls and said axis of rotation and externally operable means for effecting said translation and said angular variation.

2. The combination of claim 1 wherein said mounting means includes means resiliently urging said member outward and said externally operable means positively Oppose said resilient means.

3. The combination of claim 1 wherein said mounting means includes a spring in compression urging said member outward and said externally operable means engage the face of said member opposite that against which said spring bears and on opposite sides of said spring.

4. The combination of claim 3 wherein said externally operable means comprise threaded members engaged in said peripheral wall and bearing against said face of said counterbalancing member.

5. The combination of claim 1 wherein said member is a plate having a central hole therethrough, said mounting means comprises a post mounted in said peripheral wall and extending toward said axis through said hole and a spring contained in compression between the inner end of said post and said plate, and said externally operable means comprise a pair of screws threaded in said peripheral wall on opposite sides of said post and bearing against said plate.

6. A counterbalance for a rotating speaker system which includes an enclosure, means for mounting said enclosure for rotation and defining an axis of rotation therefor, and a speaker mounted on one side of said enclosure away from said axis;

comprising a counterbalancing member, means mounting said member inside said enclosure away from said axis oppositely to said speaker, said mounting means including externally operable means for moving said member toward and away from the axis of rotation.

7. The combination of claim 6 wherein said mounting means includes means resiliently urging said member outward and said externally operable means positively oppose said resilient means.

8. The combination of claim 6 wherein said mounting means includes a spring in compression urging said member outward and said externally operable means engage the face of said member opposite to that engaged by said spring and on opposite sides of said spring in a line parallel to said axis.