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Latching system for adjustable motorized hospital bed

  • US 4,472,845 A
  • Filed: 09/01/1981
  • Issued: 09/25/1984
  • Est. Priority Date: 09/01/1981
  • Status: Expired due to Fees
First Claim
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1. An adjustable hospital bed comprising:

  • a movable frame having head and foot ends;

    independently actuable head and foot adjusting mechanisms for raising and lowering the head and foot ends, respectively, of said movable frame;

    head drive means for actuating said head adjusting mechanism to adjust the height of the frame'"'"'s head end;

    foot drive means, for actuating said foot adjusting mechanism to adjust the height of the frame'"'"'s foot end; and

    a latching system, responsive to a momentary down command, for operating said head and foot drive means to lower each end of said movable frame directly to its lowermost level regardless of the frame'"'"'s position, and even though the frame may be tilted, at the time the command is issued, said latching system including an R-S flip-flop which is established in response to a down command and when at least one end of said movable frame is above its lowermost limit, in its set condition to cause said head and foot drive means to lower each end of said frame, said R-S flip-flop being triggered to its reset condition when both ends of said frame have reached their low limit.

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