Window operator and hinge structure
Patent 4937976 Issued on July 3, 1990. Estimated Expiration Date: 
September 22, 2009. 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.
September 22, 2009. 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 ReferencesInventorsAssigneeApplicationNo. 411098 filed on 09/22/1989US Classes:49/345, Multiple links49/252, Guide on portal frame49/260, Pivot axis moves along guide49/279, OPERATOR INTERRELATED WITH CLOSURE LATCH RELEASE49/281Common actuator, different movements to unlatch and move closureExaminersPrimary: Kannan, Philip C.Attorney, Agent or FirmInternational ClassE05F 011/28AbstractA window operator and hinge structure for a casement window which can be simply factory pre-set for positioning of a window in either egress or wash modes, with switching between modes requiring no additional parts or special tools. The structure has a pivoted handle movable between a closed, inactive position flush with a sill cover and rotatable to an inclined, active position. The handle, in its pivoting movement, operates window locking structure and also controls the action of a brake, with release of the brake by raising of the handle to operative position. Motion-transmitting connections between the handle and linkage structure include the brake as well as the clutch, with the clutch effective to limit the torque that can be applied to the linkage. The handle can be moved to closed, inactive position with the window open so that no handle protrudes and this movement of the handle sets the brake so that a wind cannot move the window.Field of SearchMultiple linksOperating lever or link and closure swing about parallel axes OPERATOR INTERRELATED WITH CLOSURE LATCH RELEASE Motor driven Pivot axis moves along guide Multiple links angularly related With additional slide guiding closure movement Guide on portal frame Common actuator, different movements to unlatch and move closure | |
