Chairs and seats – Movable bottom – Tiltable
Patent
1983-09-29
1985-11-12
Lyddane, William E.
Chairs and seats
Movable bottom
Tiltable
187 847, 192143, 248422, 248550, A47C 324
Patent
active
045524033
ABSTRACT:
A power-operated medical examination table having safety mechanisms for preventing injury or damage should someone or something become entrapped beneath the top of the table as it descends. The table includes a pedestal base having an extendable and retractable column. The top normally rests upon a load-bearing member which may be selectively raised or lowered under power to extend or retract the column. Should the top engage an obstruction during a lowering operation so that a separation occurs between the load-bearing member and the top, a sensor detects such separation and immediately interrupts power to prevent continued retraction of said load-bearing member. The table also includes at least one power-operated outer top section that is hinged to the central top section and is supported by a second load-bearing member and power drive arranged to constitute a secondary safety mechanism.
REFERENCES:
patent: 1727436 (1929-09-01), Kreutzkamp
patent: 3172699 (1965-03-01), Naughton
patent: 3295621 (1967-01-01), Deeley, Jr. et al.
patent: 3870271 (1975-03-01), Bowman
patent: 4133437 (1979-01-01), Cates
Brown Peter R.
Hamilton Industries
Lyddane William E.
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