Operating mechanism for a hospital bed head panel

Details Operating mechanism for a hospital bed head panel Operating mechanism for a hospital bed head panel

1991-07-12

1992-07-14

Trettel, Michael F.

Beds

Invalid bed or surgical support

Sectional user supporting surface

5600, 5424, 5 8915, 5459, A47B 702, F16H 2702

Patent

active

051291169

ABSTRACT:
A hospital bed has a base and a patient support mounted on the base, the patient support including a head panel that pivots between a horizontal position and an upwardly-inclined position to raise the patient to a sitting attitude. The head panel is connected to a ball nut mounted on a screw driven by a motor to raise and lower the head panel. The ball nut has a ratcheting latch that enables the head panel to be lifted manually and prevents the head panel from being driven positively downwardly in such a way as to injure some thing or person in its path.

REFERENCES:
patent: 2809688 (1957-10-01), Brundage
patent: 2844969 (1958-07-01), Lohr
patent: 2924265 (1900-02-01), Himka
patent: 3220718 (1965-11-01), Wikkerink
patent: 3858452 (1975-01-01), Gatland et al.
patent: 3877088 (1975-04-01), Bouman
patent: 4038709 (1977-08-01), Kerwit
patent: 4407030 (1983-10-01), Elliott
patent: 4559655 (1985-12-01), Peck
patent: 4799734 (1989-01-01), Peria

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