Patent ID: 6957458
Filing Date: 2005-10-25
Classification: A47C,A61G

Abstract:
1. A method of controlling coordinative lifting of bottom sections of lying furniture having a back bottom section for lifting a back portion of a lying person and a knee bottom section for lifting his/her knee portion, in which said bottom sections can be individually lifted and lowered by lifting mechanisms and pressure detecting means being interposed between the back bottom section and back of a lying person, comprising the steps of: (a) pivotally rotating and lifting the back bottom section and lifting the knee bottom section both from a flat state; (b) sensing with the pressure detecting means an amount of pressure being exerted against the back of a lying person as the back bottom section and knee bottom sections are lifted, and (c) lowering the knee bottom section when the pressure exerted against the back of a lying person increases to a preset amount.