| 摘要 |
Electric hospital bed with articulated spring having Hi-Lo, head and knee function drive means with respective manually operable control members selectively movable from neutral in either of two directions and a normally neutral control unit operable in response to each control member first to move a gear selector to effect driving connection for the selected bed function and thereafter to close one or the other of two switches to initiate motor operation for either up or down bed function movements, with means operable automatically upon release of an actuated head or knee control member to return the parts manually operated thereby to neutral position and "NO-WAIT" means for latching the Hi-Lo control member and parts manually actuated thereby in operative position following manual actuation and release and automatically operable in response to movement of the bed into its highest or lowest positions to return the Hi-Lo member and mechanisms actuated thereby to neutral positions, and simplified lockout means for selectively preventing operation of the head or knee control members, together with simplified Trendelenberg control means.
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