Window and door opening and closing mechanism
US6460294B1 · kind B1 · utility
Inventor
Key dates
| Filing date | May 26, 2000 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | May 26, 2020 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/148
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A window and door opening and closing mechanism is disclosed which is particularly well suited for use in casement and awning window fittings. The opening/closing mechanism has a hinge arrangement with two linked arms pivoting from a runner which may be attached to the window frame. One or both of the pivoting arms is mounted to the runner on a slider which is movable along the runner in relation to the pivot mounting of the other arm. The mechanism is operable by way of a cable or cord which has portions wound around a spool which is rotatable by the user. Winding the spool in one direction applies a tension to one portion of the cord or cable to apply a force between the pivot mountings of the arms and draw them together on the runner to open the window by pivoting the arms outwardly from the window frame. Winding the spool in the other direction applies a tension to another portion of the cord or cable coupled to one of the arms to draw them back toward the runner and close the window. When tension is first applied to the opening cable portion, initial limited movement of a wedge member can be used to initiate angular movement of the arms whilst the respective pivot mountings th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.