Lockable window construction
US4106239A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1977 |
| Grant date | Aug 15, 1978 |
| Priority date | — |
| Expiry date | Mar 15, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/0918
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A window frame has one or more latches provided internally of a vent sill for pivotal engagement with a latch strike in the interior of a frame sill and a latch actuator extending outwardly through an opening in the inside face of the vent sill. A spring urges the latch into engagement with the strike with the latch and the actuator being movable in a linear horizontal direction so that a slot in the side of the actuator engages the edges of the opening through which the actuator extends to hold the actuator and the associated latch in a locked or non-pivotable condition. A second embodiment employs a similar pivotal and slidable latch member in a side frame of a horizontally movable vent frame which is pivoted into latching position inside an opening in a fixed vertical meeting rail and is retained in locked or non-pivotable condition by subsequent linear vertical movement of the latch to a restricted slot portion from which it cannot pivot from the locking position. Another aspect of both embodiments is the employment of L-shaped plastic extrusion glaze strips of sufficient flexibility to be usable with different panes of varying thickness and which can include cutouts for receiv…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.