Safety device for an adjustable bed

Details Safety device for an adjustable bed Safety device for an adjustable bed

1981-02-09

1983-10-04

Lyddane, William E.

Beds

Sofa bed

Reverting back

5 69, A61G 700

Patent

active

044070306

ABSTRACT:
A safety device for an adjustable bed having an articulated mattress is shown including a power drive module having adjustable sections that support corresponding sections of the articulated mattress. Multiple winding electrical motors are mounted within the drive module for driving the adjustable sections through linkages. Due to the weight of the articulated mattress and adjustable section, the linkages are always in tension. However, should a foreign object, such as a hand, be placed below the mattress supporting section as it is lowered, the linkage will be exposed to a compression force. A switch is mounted within the linkage to sense the compression force and inhibit the motor winding which lowers the bed. However, the winding which raises the adjustable bed continues to be enabled to permit the bed to be raised and the foreign object removed.

REFERENCES:
patent: 2775137 (1956-12-01), Chung
patent: 2847629 (1958-08-01), Schaeffer
patent: 3644946 (1972-02-01), Swatt
patent: 3682283 (1972-08-01), Sato
patent: 3707930 (1973-01-01), Yindra et al.
patent: 4107877 (1978-08-01), Lee
patent: 4307799 (1981-12-01), Zouzulas
patent: 4342354 (1982-08-01), Leivenzon et al.

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