Back to results
US 12,435,563 B2Granted
Lockable corner bracket
AssigneeUblockout Technologies Pty Ltd
InventorsMark Schmick, Chris Doley
Life of this patent
Estimating the term…
Abstract
A lockable corner bracket includes a lockable encapsulated axle pulley which houses one end of a length of cord, with the free end secured to a side bracket. A cord locking mechanism is used to lock the encapsulated axle pulley and prevent unwinding of the cord, or loss of tension, during transport and installation to facilitate do-it-yourself installation. The axle pulley is further configured with a central slot to allow frontal insertion of a roller tube. The corner bracket may be used with a manual roller screen including roller tubes fitted with spring assist systems to facilitate winding and unwinding of the screen, or with roller tubes fitted with a tubular motor to drive rotation of the roller tube.
Claims11
A screen system comprising a top frame member, a roller tube, a screen, and at least one corner bracket and frame member assembly comprising,
- a corner bracket comprising:
- an axle pulley comprising a roller tube support structure located on an external side of the axle pulley wherein the roller tube support structure defines a slot formed from a slot opening and at least one receiving cavity opposite the slot opening such that in use a roller tube is inserted into the slot and the at least one receiving cavity receives at least one locking projection located on an end surface of the roller tube;
- a locking mechanism for locking the axle pulley;
- a side frame member wherein the corner bracket is connected to or formed at a first end of the side frame member, the side frame member comprising:
- a cord tensioning system housed in the side frame member and comprising a plurality of pulleys and a tension adjustment arrangement that defines a cord circuit wherein in use the tension adjustment arrangement adjusts the tension in the cord as a screen is wound and unwound from the roller tube and a cord, wherein a first end is attached around the axle pulley, and directed through the cord tensioning system, and the second end is fixed to the side frame member,
- wherein the at least one receiving cavity comprises a pair of receiving cavities separated by a wedge, and the end surface of the roller tube comprises two pairs of locking projections, each pair located on opposite sides of the end surface such that the roller tube is inserted by sliding a pair of the locking projections into the slot through the slot opening until one pair of the locking projections are received in the pair of receiving cavities, and the other pair of locking projections are located in the slot opening to lock the roller tube with respect to the axle pulley.
3 more elements
A screen system comprising a top frame member, a roller tube, a screen, and at least one corner bracket and frame member assembly comprising,
- a corner bracket comprising:
- an axle pulley comprising a roller tube support structure located on an external side of the axle pulley wherein the roller tube support structure defines a slot formed from a slot opening and at least one receiving cavity opposite the slot opening such that in use a roller tube is inserted into the slot and the at least one receiving cavity receives at least one locking projection located on an end surface of the roller tube;
- a locking mechanism for locking the axle pulley;
- a side frame member wherein the corner bracket is connected to or formed at a first end of the side frame member, the side frame member comprising:
- a cord tensioning system housed in the side frame member and comprising a plurality of pulleys and a tension adjustment arrangement that defines a cord circuit wherein in use the tension adjustment arrangement adjusts the tension in the cord as a screen is wound and unwound from the roller tube;
- and
- a cord, wherein a first end is attached around the axle pulley, and directed through the cord tensioning system, and the second end is fixed to the side frame member,
- wherein the locking mechanism comprises a locking wedge comprising a wedge portion and a distally directed lock projection, wherein the locking wedge is located in a channel formed in a side wall of the corner bracket, and a lock slide comprising a slide connected to a panel comprising a curved slot with a width configured to receive the distal lock projection, and the panel extends through a guide slot formed in a wall extending distally from the side wall such that sliding of the lock slide along the guide slot in a first direction drives the distal lock projection along the curved slot path and causes the lock wedge to engage the axle pulley to lock the axle pulley and sliding the lock slide along the guide slot in a second direction opposite the first direction drives the distal lock projection along the curved slot path and causes the lock wedge to disengage the axle pulley to unlock the axle pulley.
5 more elements
A screen system comprising a top frame member, a roller tube, a screen, and at least one corner bracket and frame member assembly comprising,
- a corner bracket comprising:
- an axle pulley comprising a roller tube support structure located on an external side of the axle pulley wherein the roller tube support structure defines a slot formed from a slot opening and at least one receiving cavity opposite the slot opening such that in use a roller tube is inserted into the slot and the at least one receiving cavity receives at least one locking projection located on an end surface of the roller tube;
- a locking mechanism for locking the axle pulley;
- a side frame member wherein the corner bracket is connected to or formed at a first end of the side frame member, the side frame member comprising:
- a cord tensioning system housed in the side frame member and comprising a plurality of pulleys and a tension adjustment arrangement that defines a cord circuit wherein in use the tension adjustment arrangement adjusts the tension in the cord as a screen is wound and unwound from the roller tube;
- and
- a cord, wherein a first end is attached around the axle pulley, and directed through the cord tensioning system, and the second end is fixed to the side frame member,
- wherein the corner bracket further comprises a mounting projection located on a side wall of the corner bracket and which forms a support surface for a ball bearing which supports the axle pulley and the roller tube support structure further comprises a torque stub with a proximal wall section and a distal flange section, wherein the proximal wall section is received within the mounting projection and the distal flange section forms a central section of the slot.
5 more elements
Dependencies are inferred from the claim text.