A castor control assembly for an adjustable bed includes a linkage mechanism having rigid link elements, and a single pedal actuator. The pedal may be actuated from the control station to shift the linkage mechanism and operate individual castors for selection of swivel, locking and steering modes, as...http://www.google.fr/patents/US4439879?utm_source=gb-gplus-shareBrevet US4439879 - Adjustable bed with improved castor control assembly
Adjustable bed with improved castor control assembly
