Grille for loudspeaker cabinet
AssigneeSuperscope, Inc.
InventorsJohn R. Ballantyne, Axel M. Heden, deceased
Life of this patent
Estimating the term…
Abstract
For use with a cabinet containing at least one loudspeaker, a grille is provided which is comprised of elongated frame members connected by corner brackets. A rigid superstructure, comprising corner ridge members and one or more central ridge members joined by ridge joint members, is attached to the frame at the corner brackets, and a covering material is disposed over the superstructure and frame. Any size grille can be constructed using the same corner brackets and ridge joint members.
Claims18
The combination of a cabinet containing at least one loudspeaker and a non-planer grille mounted on said cabinet for permitting sound to emanate from said cabinet through said grille, said grille comprising:
- a substantially planar polygonal frame including means for securing said frame to a substantially planar face of said cabinet, said frame having a size and shape corresponding to the size and shape of said face of said cabinet, said frame comprising an equal number of elongated frame members and corner brackets, each corner bracket joining two frame members at a predetermined angle, said frame members being substantially tubular and being joined to said corner brackets by fitting over projections on said corner brackets;
- a ridge structure disposed upon said frame and comprised of a plurality of elongated ridge members which intersect at at least one point outside of the plane of said frame, said ridge structure comprising a number of corner ridge members equal to the number of frame members, each corner ridge member having one end secured to a corner bracket and the other end secured to a ridge joint member at a point outside of the plane of said frame;
- and
- a covering material disposed over said structure and secured to said frame.
The combination of a cabinet containing at least one loudspeaker, and a non-planar grille mounted on said cabinet for permitting sound to emanate from said cabinet through said grille;
- said grille comprising:
- a pair of elongated side frame members;
- a pair of elongated end frame members;
- four corner brackets, arranged to join said side and end frame members at 90.degree. angles, said frame members being substantially tubular and being joined to said corner brackets by fitting over projections on said corner brackets, thereby forming a substantially planar rectangular frame including means for securing said frame to a substantially planar rectangular face of said cabinet, said frame being sized to substantially correspond with the size of said face of said cabinet;
- an elongated central ridge member spaced from said plane and disposed in a parallel relationship with the longitudinal axis of said rectangle, and extending from a first point near a first end of said rectangle, to a second point near a second end of said rectangle, said central ridge member being supported at said first point by a pair of corner ridge members extending from said first point to said corner brackets at said first end of said rectangle, and supported at said second point by a pair of corner ridge members extending from said second point to said corner brackets at said second end of said rectangle, each end of said central ridge member being joined with said corner ridge members by a ridge joint member;
- and
- a permeable covering material disposed over said central and corner ridge members and secured to said frame members thereby forming said non-planar grille.
Dependencies are inferred from the claim text.