Patent ID: 7353638

Claim:
A cylindrical sound resistant enclosure comprising; an outer substantially cylindrical wall fixedly attached to at least a first top attachment support ring and at least a bottom attachment support ring, the outer cylindrical wall having an opening therein, an inner substantially cylindrical wall fixedly attached to the first top attachment support ring and fixedly attached to at least the bottom attachment support ring, the inner cylindrical wall being substantially coaxial to the outer cylindrical wall, the inner cylindrical wall having an opening therein wherein the radial position of the inner cylindrical wall opening is substantially aligned with the outer cylindrical wall opening, the inner cylindrical wall being a smaller diameter than the outer cylindrical wall, the inner cylindrical wall substantially co-axial to the outer cylindrical wall wherein creating a space between the outer and inner cylindrical wall, a sound resistant material occupying the space between the inner cylindrical wall and the outer cylindrical wall, a perforated substantially cylindrical sound shield fixedly attached to the inner wall, the sound shield having a smaller diameter that the inner wall, the sound shield substantially co-axial to the inner cylindrical wall wherein creating a space between the sound shield and inner cylindrical wall, sound resistant material occupying the space between the inner cylindrical wall and the sound shield, a top member fixedly attached to the top attachment support ring, a perforated substantially disc shaped sound shield fixedly attached to the top member within the booth creating a space between the disc shaped sound shield and the top member, sound resistant material occupying the space between the disc shaped sound shield and the top member, a floor member fixedly attached to the bottom attachment support ring, and; a door member being a section of a substantially cylindrical member co-axial to the inner and outer walls, the door having a smaller diameter than the outer wall and a larger diameter than the inner wall, a second top attachment support ring rotateably affixed to the first attachment top support ring, a bearing mounted between the first and second top support rings allowing for the second support ring to rotate, the door fixedly attached to the second top support ring, the door adapted to rotate co-axial to the inner and outer cylindrical members such that the door slides between them, the door pivots about its radial centerline, the door is adapted to obstruct the opening in the inner and outer cylindrical walls when closed, the door is adapted to rotate between the inner and outer cylindrical wall such that to expose the openings in the inner and outer cylindrical walls when open, a door stop wherein the door can only travel to a predetermined position.