Acoustical mounting bracket for attaching ceiling suspension to floor joists

1. A bracket for use in acoustically isolating a ceiling support grid from a frame member, said bracket comprising:

a planar body including an upper portion and a lower portion, said upper portion having an upper edge and first opposing, side edges defining a uniform width, wherein said upper edge is substantially straight and extends from one of said first side edges to the other of said first side edges, said upper portion including two laterally spaced mounting apertures, said lower portion having opposing, second side edges respectively extending from said first side edges to a bottom edge opposite to said upper edge, wherein said bottom edge is parallel to said upper edge and has a width that is less than said uniform width of said upper portion, said lower portion including a grid receiving formation defining a “T”-shaped opening; and

a unitary, resilient grommet secured relative to each said aperture for acoustically isolating a fastener passing through each said aperture into the frame member, said grommet being in direct contact with the fastener and the frame member and including planar members spaced apart axially along a longitudinal axis of the fastener and extending radially from each of said apertures on opposing sides of said planar body.

2. The bracket of claim 1 wherein said two mounting apertures and said grid receiving formation project through said body transversely to a plane defined by said body.

3. The bracket of claim 1 wherein said opening includes a first, quadrilateral-shaped main portion which is in communication with a narrower slot opening to a peripheral edge of said body.

4. The bracket of claim 1 wherein said ceiling support grid has a bead, and said grid receiving formation defines a complementary opening for slidably receiving said bead.

5. A bracket mounting system for use in acoustically isolating a ceiling support grid from a frame member, said bracket system comprising:

a planar body having a lower portion having a bottom edge defining a lower width and defining a “T”-shaped grid receiving formation, and an upper portion adjacent to said lower portion and having an upper width, said upper portion having an upper edge extending along said upper width and including a pair of laterally spaced mounting apertures, said upper and lower portions being integral, wherein said upper edge is parallel to said bottom edge, and wherein said upper width is greater than said lower width;

a unitary, resilient grommet secured in each said aperture for acoustically isolating a fastener passing through each said aperture into the frame member, said grommet being in direct contact with the fastener and the frame member and including planar members spaced apart along a longitudinal axis of the fastener and extending radially from each of said apertures on opposing sides of said planar body at said apertures;

said apertures and said grid receiving formation projecting through said body transversely to a plane defined by said body; and

a spacer positioned between the support grid and the frame member to help maintain vertical alignment of said planar body on the frame member.