Conformable support system for furniture
Patent 4380838 Issued on April 26, 1983. Estimated Expiration Date: 
April 8, 2001. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 8, 2001. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 847758 1550462 3253285 3319270 3790150 Cushioning material construction Patent #: 4033567 InventorApplicationNo. 06/252179 filed on 04/08/1981US Classes:5/618, And lower body portions of user supported by adjustable section5/613Sectional user supporting surfaceExaminersPrimary: Zugel, Francis K.Assistant: Trettel, Michael F. Attorney, Agent or FirmInternational ClassesA47C 31/12 (20060101)A47C 31/00 (20060101) AbstractAn article of furniture, such as a bed or a chair, provides improved comfort by supporting a human body resting thereon and adaptively conforming to the body contours in contact with the support surface while providing a distribution of support forces that does not vary significantly as the contour changes. A segmented frame pivotally supported on pairs of balance levers which in turn are pivotally attached to a firm base provides a floating action. When ratios of distances of lever ends from their pivot points are selected in inverse ratio to the weights of the human body sections to be supported by attached frame segments, the resulting distribution of support forces matches the distribution of weight in the body and tends to relieve muscle tension. | |
