Bed with foldable earthquake protective cover

Details Bed with foldable earthquake protective cover Bed with foldable earthquake protective cover

1991-04-18

1992-05-12

Nicholson, Eric K.

Beds

Having safety device

5414, 5 1, 52167R, A47C 2900

Patent

active

051115433

ABSTRACT:
A foldable earthquake protective bed comprises a support frame (10) and two moveable members (20 and 22) pivotally attached to the support frame (10) and capable of being pivoted between a folded position in which the moveable members are arranged as conventional parts of the bed and an unfolded position in which they form a rigid protective cover above the bed's occupant(s). The bed may have a power drive in the form of a pneumatic cylinder (42) with a piston (43) sliding inside the cylinder (42). A piston rod (44) of the piston (43) is pivotally attached by a link (46) to a bracket (30) of the pivotable member (20) and by a link (48) to a bracket (32) of the pivotable member (22). Compressed air can be admitted to the cylinder (42) from a pressure vessel (50) via a control valve (52). This valve can be activated either manually by pushing a pushbutton (62) built into the bed frame, or automatically from a seismic sensor (58) attached to the wall of the building. When the valve is opened, air is admitted to the cylinder and causes rotation of the pivotable members (20) and (22) into their earthquake protective position. Several other embodiments are shown, including manually driven mechanisms and a mechanism for unfolding the bed under the weight of the bed's occupant.

REFERENCES:
patent: 2607047 (1952-08-01), Posey
patent: 2738523 (1956-03-01), Bryant
patent: 2844828 (1958-07-01), Stark
patent: 4069527 (1978-01-01), Harris
patent: 4490864 (1985-01-01), Wicker, Jr.
patent: 4550457 (1985-11-01), Dukkers
patent: 4782541 (1988-11-01), Tuckman
patent: 4965895 (1990-10-01), Shustov

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