Beds – Bedsteads – Having bottom
Patent
1974-09-18
1976-08-31
Nunberg, Casmir A.
Beds
Bedsteads
Having bottom
5247, 5267, A47C 2304
Patent
active
039770290
ABSTRACT:
A box spring assembly having a generally rectangular frame consisting of side and end rails and a plurality of spaced cross rails extending between the side rails, a border wire conforming generally to the shape and boundaries defined by the side and end rails, a plurality of longitudinal and transverse main springs parallel to the side and end rails and perpendicular to each other, and a plurality of internal support springs extending diagonally between pairs of main springs, all of the springs being of the formed wire type. Each main spring is attached to the border wire by a clip, and either the border wire or the spring or both are coated with a plastic material to preclude slippage of the clip. Furthermore, each internal support spring is attached to a pair of main springs by a clip, and either the support spring or the main spring or both are coated with plastic. All the wires may be coated with a different color plastic to facilitate assembly of the product. The invention also includes a process for converting straight wire into a spring which is then heat treated and exposed to a fluidized bed for coating, the quality of the resulting coating being indicative of the quality of the heat treatment.
REFERENCES:
patent: 3286281 (1966-11-01), Slominski
patent: 3487480 (1970-01-01), Slominski
patent: 3709559 (1973-01-01), Rowland
patent: 3774967 (1973-11-01), Rowland
Hoover Ball and Bearing Company
Nunberg Casmir A.
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