System for unlocking/locking and opening/closing windows
US10125529B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 13, 2015 |
| Grant date | Nov 13, 2018 |
| Priority date | — |
| Expiry date | Feb 28, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05F3/22
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A lever mechanism system includes push arms pivotably coupled to a vent sash and drive arms pivotably coupled to the push arms. The system includes gears coupled to the drive arms and a locking gear slide coupled with a locking mechanism of the sash. The system includes a handle that rotates approximately 180 degrees in a first direction to pivot the gear slide to move the locking mechanism of the sash to an unlocked position and rotates the gears to extend the drive arms and the push arms such that the sash is pushed to an open position. The handle radially rotates approximately 180 degrees in a second direction to rotate the gears to retract the drive arms and the push arms such that the sash is pulled to a closed position and pivots the gear slide to move the locking mechanism of the sash to a locked position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.