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US 6,598,264 B2Granted
Block and tackle window balance with bottom guide roller
AssigneeAmesbury Group, Inc.
InventorGary Roger Newman
Life of this patent
Estimating the term…
Abstract
Disclosed are apparatus for a block and tackle window balance to be incorporated in single and double hung window assemblies. In one embodiment the block and tackle window balance includes a roller secured within a bottom guide to increase range of travel of a window sash.
Claims23
A block and tackle window balance device comprising:
- a channel comprising a first end and a second end;
- a top guide connected to the first end of the channel;
- a bottom guide connected to the second end of the channel;
- a bottom guide roller rotatably mounted in the bottom guide;
- a fixed pulley block unit connected to the channel;
- a translatable pulley block unit moveable within the channel;
- a spring comprising a first end and a second end, wherein the first end is fixed relative to the channel and the second end is connected to the translatable pulley block unit;
- and
- a cord comprising a first cord end and a second cord end, wherein the cord is threaded through the translatable pulley block unit and the fixed pulley block unit and extends around the bottom guide roller, the first cord end being attached to the translatable pulley block unit and the second cord end being attachable to a jamb.
6 more elements
A window assembly comprising:
- a window frame with two jambs with jamb pockets;
- at least one of an upper window sash and a lower window sash slidably receivable in the jamb pockets;
- and
- at least one block and tackle window balance device attached to the at least one of the upper window sash and the lower window sash, the device comprising:
- channel comprising a first end and a second end;
- a top guide connected to the first end of the channel;
- a bottom guide connected to the second end of the channel;
- a bottom guide roller rotatably mounted in the bottom guide;
- a fixed pulley block unit connected to the channel;
- a translatable pulley block unit moveable within the channel;
- a spring comprising a first end and a second end, wherein the first end is fixed relative to the channel and the second end is connected to the translatable pulley block unit;
- and
- a cord comprising a first cord end and a second cord end, wherein the cord is threaded through the translatable pulley block unit and the fixed pulley block unit and extends around the bottom guide roller, the first cord end being attached to the translatable pulley block unit and the second cord end being attachable to a jamb.
10 more elements
A window balance device comprising:
- a bottom guide adapted to be connected to an end of a window balance channel and adapted to slide in a jamb pocket when installed in a window frame;
- and
- a bottom guide roller rotatably mounted in the bottom guide.
A window balance device comprising:
- a channel comprising a first end and a second end;
- a top guide connected to the first end of the channel;
- a bottom guide connected to the second end of the channel and adapted to slide in a jamb pocket when installed in a window frame;
- and
- a bottom guide roller rotatably mounted in the bottom guide.
2 more elements
A window balance device comprising:
- a bottom guide connected to an end of a window balance channel, the bottom guide slidable in a jamb pocket when installed in a window frame, the bottom guide including:
- a bottom guide axle mounted within the bottom guide, the bottom guide axle located outside the window balance channel;
- and
- a bottom guide roller rotatably mounted on the bottom guide axle.
1 more element
Dependencies are inferred from the claim text.