Litter frame with supporting platform which can be raised by hyd

Details Litter frame with supporting platform which can be raised by hyd Litter frame with supporting platform which can be raised by hyd

1976-08-30

1978-03-14

Nunberg, Casmir A.

Beds

Sofa bed

Reverting back

5118, 5 86, 254122, 296 19, A61G 710, A47C 332

Patent

active

040782697

ABSTRACT:
A litter frame having a supporting platform is adapted to be raised by a hydraulic or pneumatic jack. A common pneumatic or hydraulic system is provided to both raise the platform and to provide spring suspension for the same. Where a common hydro-pneumatic system is provided, the jack assembly is actuated by a hydraulic medium, while a hydro-pneumatic cushioning assembly is loaded by the hydraulic medium. The hydraulic medium is delivered to both the jack and the hydro-pneumatic system from the same hydraulic supply.

REFERENCES:
patent: 3003724 (1961-10-01), Kiekhaefer
patent: 3203670 (1965-08-01), Farris
patent: 3218019 (1965-11-01), Elfes et al.
patent: 3240452 (1966-03-01), Cheeseboro
patent: 3266774 (1966-08-01), Goyarts
patent: 3478372 (1969-11-01), Benoit et al.
patent: 3493211 (1970-02-01), Barecki et al.
patent: 3711876 (1973-01-01), Kirkland et al.
patent: 3733623 (1973-05-01), Groxton
patent: 3752526 (1973-08-01), Der Burgt et al.
patent: 3831996 (1974-08-01), Layer
patent: 3918554 (1975-11-01), Bourgraf et al.

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