Sleep unit having adjustable firmness

Details Sleep unit having adjustable firmness Sleep unit having adjustable firmness

1986-10-08

1987-05-26

Grosz, Alexander

Beds

Bedclothing

And means to facilitate changing thereof

5475, A47C 2304

Patent

active

046673571

ABSTRACT:
A sleep unit having inner coil springs is adjustable for firmness by movement of an inner plate or frame having portions which extend between selected turns of the springs.

REFERENCES:
patent: 2257994 (1941-10-01), Zofnass
patent: 2842784 (1958-07-01), Grund
patent: 2985895 (1961-05-01), Bloom
patent: 3551924 (1969-05-01), Frye
patent: 3608107 (1971-09-01), Kentor et al.
patent: 4222137 (1980-09-01), Usami

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