Constant force window balance engagement system
AssigneeAmesbury Group, Inc.
InventorWilbur James Kellum, III
Life of this patent
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Abstract
A window balance system includes a mounting bracket configured to be secured to a window jamb, a shoe body and a coil spring movably coupling the mounting bracket to the shoe body. The window balance system also includes an engagement member extending from at least one of the mounting bracket and the shoe body, wherein the engagement member includes at least one resilient arm having a pawl extending therefrom. The window balance system further includes a receiving member defined in at least the other one of the mounting bracket and the shoe body, wherein the receiving member includes at least one rack having at least one tooth extending therefrom such that the pawl is engageable with the rack.
Claims16
A window balance system comprising:
- a mounting bracket configured to be secured to a window jamb;
- a shoe body defining a longitudinal axis;
- a coil spring movably coupling the mounting bracket to the shoe body;
- an engagement member extending from at least one of the mounting bracket and the shoe body, wherein the engagement member comprises at least one resilient arm having a pawl extending therefrom;
- and
- a receiving member defined in at least the other one of the mounting bracket and the shoe body, wherein the receiving member comprises at least one rack having at least one tooth extending therefrom such that the pawl is engageable with the at least one tooth, and wherein the engagement between the pawl and the at least one tooth at least partially deflects the resilient arm in a direction toward and away from the longitudinal axis.
A window balance system comprising:
- a shoe body comprising:
- an end portion;
- and
- a pair of resilient arms extending from the end portion, each resilient arm having a pawl extending therefrom;
- and
- a mounting bracket comprising a pair of racks, each rack having a plurality of teeth extending therefrom such that each pawl is engageable with the corresponding rack.
Dependencies are inferred from the claim text.