Window lock

Patent metadata

Field	Value
Publication number	US-9890571-B1
Application number	US-201715452667-A
Country	US
Kind code	B1
Filing date	Mar 7, 2017
Priority date	Mar 7, 2017
Publication date	Feb 13, 2018
Grant date	Feb 13, 2018

Abstract

A window lock system selectively prevents a window from being opened. A window sash can be connected by a cord to the sill of the window. The cord has an attached lock insert. To lock the window, the insert on the cord is inserted into a track housed in a mount that is mounted to the sash or sill. The track may be formed as part of a rotatable disk. A key turns the track to move the track to a locked configuration. In the locked configuration, the sash and sill are connected by the cord. To unlock the window, the key rotates the disk to allow release of the insert from the track.

First claim

What is claimed is:

1. A window lock comprising:
a first mount configured to be attached to a first window component;
a flexible cord attached to the first mount;
a second mount configured to be attached to a second window component, one of the first and second window components being movable relative to the other, the second mount including a rotating lock disk, the disk having a key receptor and a track in a face of the disk, the disk having a thickness that is smaller than both a height and width of the face of the disk;
a lock insert attached to the flexible cord; and
a key configured to engage with the key receptor such that rotation of the key rotates the rotating lock disk;
wherein the lock insert is insertable into the track in a direction perpendicular to the lock disk when the disk is at a first rotation state, and the disk has a second rotation state at which removal of the insert from the second mount is prevented.

2. The window lock of claim 1 , further comprising the first window component and the second window component.

3. The window lock of claim 1 , wherein rotating the key causes the track to move between the first rotation state and the second rotation state.

4. The window lock of claim 1 , wherein the first rotation state comprises the rotating lock disk rotated to its maximum clockwise extent, and the second rotation state comprises the rotating lock disk rotated to its maximum counterclockwise extent, and the key is disengagable from the key receptor only when the track is in the first or second rotation state.

5. The window lock of claim 1 , wherein the lock insert comprises a stem and a head, the stem having a smaller diameter than the head.

6. The window lock of claim 1 , wherein the track has a curved path.

7. The window lock of claim 1 , wherein the track has a semi-circular path.

8. The window lock of claim 1 , wherein the rotating lock disk is circular.

9. A method of operating a window lock, the window lock comprising a first mount attached to a first window component, a flexible cord attached to the first mount, a second mount attached to a second window component that is movable relative to the first window component, and a lock insert attached to the flexible cord, the method comprising:
inserting the lock insert into a track of a rotating lock disk with the rotating disk being in a first rotation state, the rotating lock disk being attached to the second mount, wherein the track is in a face of the disk, and the disk has a thickness that is smaller than both a height and width of the face of the disk;
inserting a key into a key receptor of the second mount;
turning the key to turn the rotating lock disk from the first rotation state to a second rotation state such that the track of the rotating lock disk prevents the lock insert from being removed from the second mount, the second rotation state being at least 180 degrees from the first rotation state, wherein the lock disk remains within the second mount during the turn from the first rotation state to the second rotation state; and
removing the key from the key receptor.

10. The method of claim 9 , wherein the first rotation state comprises the rotating lock disk rotated to its maximum clockwise extent, and the second rotation state comprises the rotating lock disk rotated to its maximum counterclockwise extent, and the key is disengagable from the key receptor only when the track is in the first or second rotation state.

11. The method of claim 9 , wherein the lock insert comprises a stem and a head, the stem having a smaller diameter than the head.

12. The method of claim 9 , wherein the track has a curved path.

13. The method of claim 9 , wherein the track has a semi-circular path.

14. The method of claim 9 , wherein the rotating lock disk is circular.

15. A window lock comprising:
a first mount configured to be attached to a first window component;
a flexible cord attached to the first mount;
a second mount configured to be attached to a second window component, one of the first and second window components being movable relative to the other, the second mount including a rotating lock disk mounted within the second mount, the rotating lock disk having a thickness that is smaller than a height and a width of the rotating lock disk, the thickness being the dimension that is parallel to a rotation axis of the rotating lock disk;
a lock insert attached to the flexible cord; and
a disk actuator which rotates the rotating lock disk from a first rotation state to a second rotation state, wherein the second rotation state is rotated at least a quarter rotation from the first rotation state;
wherein the lock insert is insertable into a track when the disk is at the first rotation state, and when the disk is at the second rotation state, removal of the insert from the second mount is prevented.

16. A window lock as in claim 15 , wherein the disk actuator is removable from the second mount.

17. The window lock of claim 15 , further comprising the first window component and the second window component, and wherein the first window component comprises a sash and the second window component comprises a sill.

18. The window lock of claim 15 , wherein the track has a curved path, and the track prevents removal of the insert from the second mount when the disk is at the second rotation state.

Assignees

• Elbee Pty Ltd

Inventors

• Marsden Andrew

Classifications

• E05C17/36 Primary

  comprising a flexible member, e.g. chains · CPC title

• E05C17/08

  with special means for release, e.g. automatic release by further opening · CPC title

• E05C17/46

  in which the wing or a member fixed thereon is engaged by a movable fastening member in a fixed position; in which a movable fastening member mounted on the wing engages a stationary member · CPC title