Chair control
Patent 4314728 Issued on February 9, 1982. Estimated Expiration Date: 
May 1, 2000. 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.
May 1, 2000. 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 3758157 3881772 Vehicle seat having backrest height adjustment means Patent #: 4154477 InventorAssigneeApplicationNo. 06/145439 filed on 05/01/1980US Classes:297/300.4, Torsion bar or torsion spring297/303.3, Torsion bar or torsion spring297/353MOVABLE BACKExaminersPrimary: Lawson, Patrick D.Attorney, Agent or FirmInternational ClassesA47C 7/44 (20060101)A47C 7/40 (20060101) A47C 1/031 (20060101) A47C 1/032 (20060101) A47C 3/02 (20060101) A47C 3/026 (20060101) AbstractThe specification discloses a synchrotilt chair control in which a heavily loaded toggel linkage or slide arrangement between the rear of the seat support member and the chair back support member is eliminated by providing a slide and track arrangement between the front of the chair seat support and the front of the stationary housing. The front location is relatively lightly loaded as compared to the rear of a chair to which the control is mounted.Field of SearchMOVABLE BACK | |
