Resilient lighting fixture hanger

Claim 2

An improved vibration-isolating mounting for a lighting fixture, comprising: a generally hollow support including a housing and having a bottom surface with a hole therethrough, a compression spring carried vertically in said housing and having a lower coil resting on said bottom surface and an upper coil thereabove, a single-piece stem member in said housing having an integrally formed protrusion above and of a larger transverse dimension than the diameter of said upper coil and extending over a portion thereof for bearing downwardly thereon, said stem having central portions depending from said upper end generally axially thereof and through the hole in the bottom surface of the supporting housing to a lower end below said hole, said lower end of the stem having attachment means thereon for connection to a lighting fixture assembly, said protrusion on the stem including at least one laterally outwardly extending ear means jutting outwardly in a generally singular lateral direction away from said stem for effecting captivating assembly of the spring on the stem member by screwing one onto the other.

Claim 3

The mounting as set forth in claim 1, wherein one end of said compression spring has a smaller inner diameter than the other end, and wherein said smaller inner diameter is less than said transverse dimension of the stem member, and said other end has a larger inner diameter than said transverse dimension of the stem member to facilitate the rapid captivating assembly of the spring onto the stem piece.

Claim 4

For use in hanging electrical fixtures or the like, improved vibration isolation means, comprising: a generally hollow and bell-shaped housing with a passageway extending axially therethrough and having swivel means generally at the top thereof for providing a universal connection to the mating portions of an electrical outlet box and for causing said housing to depend generally vertically therefrom, said housing opening downwardly at the bottom portions; a closure plate fixedly secured to the bottom portions of said housing, said plate having an opening therein; an axially aligned compression spring of varying diameter and having a variable spring rate carried within said housing, said spring having a relatively large diameter lowermost portion bearing downward against said plate around said opening; and an elongate stem piece extending axially through said conical spring and having an upper end with a pair of diametrically opposed and laterally outwardly extending lugs having an overall lateral dimension between the maximum and minimum diameters of said spring and greater than the diameter of the coil immediately therebelow for resting thereon, said stem piece having a thinner intermediate portion extending through said closure plate opening, said stem piece having a lower end of larger transverse dimensions than portions of said closure plate opening, and said stem piece also having a lowermost portion below said plate including means for attaching a light fixture thereto.

Claim 5

For use in hanging electrical fixtures or the like, improved vibration isolation means, comprising: a generally hollow and bell-shaped housing with a passageway extending axially therethrough and having swivel means generally at the top thereof for providing a universal connection to the mating portions of an electrical outlet box and for causing said housing to depend generally vertically therefrom, said housing opening downwardly at the bottom portions; a closure plate fixedly secured to the bottom portions of said housing, said plate having an opening therein; an axially aligned compression spring of varying diameter and having a variable spring rate carried within said housing, said spring having a relatively large diameter lowermost portion bearing downward against said plate around said opening; and an elongate stem piece extending axially through said conical spring and having an upper end with a pair of diametrically opposed and laterally outwardly extending lugs having an overall lateral dimension between the maximum and minimum diameters of said spring and greater than the diameter of the coil immediately therebelow for resting thereon, said stem piece having a thinner intermediate portion extending through said closure plate opening, said stem piece having a lower end of larger transverse dimensions than portions of said closure plate opening, and said stem piece also having a lowermost portion below said plate including means for attaching a light fixture thereto.

Claim 6

The vibration isolation means as set forth in claim 3, including means on said stem piece and closure plate for preventing relative rotation between said lowermost portions of the stem piece and the housing.

Claim 7

The vibration isolation means as set forth in claim 3, wherein said closure plate, spring, and stem piece form a subassembly, and wherein the hole in said closure plate is large enough to admit the upper end of said stem piece therethrough.