Window stays
AssigneeInterlock Industries Limited
InventorsPhilip J. Hindin, Albert G. Bucher
Life of this patent
Estimating the term…
Abstract
A window stay of a geometry whereby, in the closed position of the stay, the pivot coupling the long arm to the sash plate is situated between the pivots respectively coupling the frame and sash plates to the short arm. The short arm is provided with a fold located between the pivot points thereof and extends substantially diagonally relative to an imaginary line between the pivot points. The pivot coupling the short arm to the frame plate is offset to the other pivots when the stay is closed by the frame plate forms an angle with respect to the length of the frame member to which the frame plate is, in use, attached.
Claims14
A window stay, which comprises:
- a frame plate;
- a sash plate;
- an elongate short arm coupled respectively by a pivot at each end thereof to the frame plate and sash plate;
- and
- an elongate long arm coupled respectively by a pivot at each end thereof to the frame plate and sash plate, the geometry of the stay being such that, in a closed position of the stay, the pivot coupling the long arm to the sash plate is situated between the pivot coupling the frame plate to the short arm and the pivot coupling the sash plate to the short arm wherein the short arm is provided with a step located in the length of the short arm between the pivot coupling the short arm to the frame plate and the pivot coupling the short arm to the sash plate, said step extending across the width of the short arm and being disposed substantially diagonally relative to an imaginary line extending between said pivot coupling the short arm to the frame plate and the pivot coupling the short arm to the sash plate.
A window stay which comprises:
- a frame plate;
- an elongate short arm coupled by a pivot at each end to the respective frame plate and sash plate;
- an elongate long arm coupled by a pivot at each end of the respective frame plate and sash plate, the geometry of the stay being such that, in a closed position of the stay, the pivot coupling the long arm to the sash plate is situated between the pivot coupling the frame plate to the short arm and the pivot coupling the sash plate to the short arm wherein the pivot coupling the short arm to the frame plate is offset from a line between the pivot coupling the long arm to the frame plate and the pivot coupling the short arm to the sash plate when the stay is in the closed position;
- and
- an elongate locating member having a longitudinal side edge wherein the frame plate is engaged upon said elongate locating member and aligned with the pivot coupling the long arm to the frame plate and the pivot coupling the short arm to the frame plate wherein a line between the pivot coupling the frame plate to the long arm and the pivot coupling the frame plate to the short arm is at an acute angle with respect to the longitudinal side edge of the locating member.
Dependencies are inferred from the claim text.