US 2023/0340819 A1Published application

High-capacity multi-bar linkage hinge assembly for pivotally mounted window vent

AssigneeCaldwell Manufacturing Company North America, LLC

InventorsNathan C. SERFASS, James M. MCINNIS, Patrick E. MILLIGAN, Matthew N. BRADY

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Abstract

A multi-bar linkage assembly for a pivotally mounted window sash and, more particularly, a high-capacity hinge assembly is disclosed. The hinge assembly is less susceptible to deflection during operation and may be used with and support window vents more than 100 in. tall and weighing more than 400 lbs. Notwithstanding the hinge assembly’s wide range of use, the hinge assembly stack height does not exceed the industry standard of 0.625 in. for conventional hinge assemblies incapable of use in heavy-duty applications. The hinge assembly may be used with standard form window frames without requiring redesigning or otherwise modifying the window frame’s standard form cross-section.

Claims18

Dependent claims

A high capacity, multi-bar linkage assembly for a pivotally mounted window sash, the linkage assembly movable between a closed position and an opened position, the linkage assembly comprising:

a track configured for attachment to a window frame, the track comprising a channel, a first end portion and a second end portion;
a slider assembly slidable within the channel of the track;
a vent bar having a first central longitudinal axis and extending along the first central longitudinal axis from a first end portion to a second end portion and configured for attachment to a window sash;
an intermediate linkage assembly connecting the vent bar to both the track and the slider assembly, the intermediate linkage assembly comprising a connector link, a brace and a strut, the strut having a second central longitudinal axis and extending along the second central longitudinal axis from a first end portion to a second end portion;
the connector link pivotally connected to the first end portion of the vent bar and pivotally connected to a first end portion of the slider assembly;
a first end portion of the brace pivotally connected to a second end portion of the slider assembly and a second end portion of the brace pivotally connected to the strut at a first pivotal connection that is laterally offset from the second central longitudinal axis of the strut;
and
the strut further pivotally connected to the track and the vent bar, wherein the first end portion of the strut is pivotally connected to the second end portion of the track and the second end portion of the strut is pivotally connected to the vent bar at a second pivotal connection that is laterally offset from the first central longitudinal axis of the vent bar;
wherein the second end portion of the strut comprises a recess portion;
and
wherein the first pivotal connection and the second pivotal connection are located in the recess portion.

8 more elements

A high capacity, multi-bar linkage assembly for a pivotally mounted window sash, the linkage assembly movable between a closed position and an opened position, the linkage assembly comprising:

a track configured for attachment to a window frame, the track comprising a channel, a first end portion and a second end portion;
a shoe having a first end portion and a second end portion and slidable along the track and within the channel, the shoe comprising a shoe link nested within a slider pad, a lower surface of the slider pad slidably engaging the channel;
a vent bar having a first central longitudinal axis and extending along the first central longitudinal axis from a first end portion to a second end portion and configured for attachment to a window sash;
an intermediate linkage assembly connecting the vent bar to both the track and the shoe, the intermediate linkage assembly comprising a first intermediate link, a second intermediate link, a third intermediate link and a fourth intermediate link, the fourth intermediate link comprising a fourth central longitudinal axis and extending from a first end portion to a second end portion;
the first intermediate link pivotally connected to the first end portion of the vent bar and pivotally connected to the first end portion of the shoe;
a first end portion of the second intermediate link pivotally connected to the second end portion of the shoe and a second end portion of the second intermediate link pivotally connected to the fourth intermediate link at a first pivotal connection that is laterally offset from the fourth central longitudinal axis, the second intermediate link further pivotally connected the third intermediate link;
the third intermediate link further pivotally connected to the vent bar;
and
the fourth intermediate link further pivotally connected to the track and the vent bar, wherein the first end portion of the fourth intermediate link is pivotally connected to a second end portion of the track and a second end portion of the fourth intermediate link is pivotally connected to the vent bar at a second pivotal connection that is laterally offset from the first central longitudinal axis of the vent bar.

6 more elements

A high capacity, multi-bar linkage assembly for a pivotally mounted window sash, the linkage assembly movable between a collapsed condition and an expanded condition, the linkage assembly comprising:

a track configured for attachment to a window frame, the track comprising a channel, a first end portion and a second end portion;
a bar-shaped, structural spacer disposed within the channel of the track at the second end portion of the track;
a slider assembly slidable within the channel of the track;
a vent bar having a central longitudinal axis and extending from a first end portion to a second end portion and configured for attachment to a window sash;
an intermediate linkage assembly connecting the vent bar to both the track and the slider assembly, the intermediate linkage assembly comprising a connector link, a brace and a strut a having a central longitudinal axis and extending along from a first end portion to a second end portion;
the connector link pivotally connected to the first end portion of the vent bar and pivotally connected to a first end portion of the slider assembly;
a first end portion of the brace pivotally connected to a second end portion of the slider assembly and a second end portion of the brace pivotally connected to the strut at a first pivotal connection;
and
the strut further pivotally connected to the track, the structural spacer and the vent bar, wherein the first end portion of the strut is pivotally connected to the structural spacer and the second end portion of the track and the second end portion of the strut is pivotally connected to the vent bar at a second pivotal connection;
wherein the second end portion of the strut comprises a recess portion;
wherein the first pivotal connection and the second pivotal connection are located in the recess portion and
wherein the second pivotal connection is laterally offset from the central longitudinal axis of the vent bar.

9 more elements

Dependencies are inferred from the claim text.