Combined window operator and hinge
US4823508A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 10, 1987 |
| Grant date | Apr 25, 1989 |
| Priority date | — |
| Expiry date | Nov 10, 2007 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/148
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A combined window operator and hinge having a hinge with a track mountable to a window frame for a pivotal window and an operator case also mounted to the frame in spaced relation to the track. The hinge has a shoe movable along the track and a sash arm movable relative to the shoe as well as a control arm pivotally connected between the track and the sash arm. A lever, in the form of a bell crank, is pivoted to the shoe and to the control arm and has a connection to the operator through an operator arm and a drag link whereby torque may be imparted to the control arm for facilitating opening and closing movement of the hinge and window sash associated therewith with the application of minimal force to the operator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.