Window sash position maintainer

A window apparatus comprising:

• at least one trough associated with a frame;
• at least one planar blade mounted in a window sash, the planar blade slidably disposed within the trough and guides the sash as it moves within the frame, the planar blade rotatable around an axis from a first position to a second position, in the first position the blade is disposed within the trough, in the second position the blade retracted within the sash and releases the sash from the frame;
• the blade is biased toward the frame in the first position;
• and
• the frame includes a bottom surface having a slot formed therein, the planar blade rotatable from the second position to a third position, in the third position the planar blade disposed within the slot.

A window apparatus comprising:

• at least one trough associated with a frame;
• at least one planar blade mounted in a window sash, the planar blade slidably disposed within the trough and guides the sash as it moves within the frame, the planar blade rotatable around an axis from a first position to a second position, in the first position the blade is disposed within the trough, in the second position the blade retracted within the sash and releases the sash from the frame;
• the blade is biased toward the frame in the first position;
• and
• a flexible filament coupled with the planar blade, the filament including a sleeve crimped thereon.

A window apparatus comprising:

• at least one trough associated with a frame;
• a pair of planar blades mounted in a window sash, the planar blades, the planar blades are rotatable around an axis from a first position to a second position, in the first position the blades are disposed out of the sash and guide the sash within the frame, in the second position the blades are retracted within the sash and releases the sash from the frame;
• a spring assembly adapted to bias the blades toward the frame;
• and
• a flexible filament coupled with each of the blades, the flexible filament configured to move the pair of planar blades from the first position to the second position.

A method comprising:

• associating troughs with a window frame;
• mounting two planar blades within opposite sides of a sash;
• orienting the planar blades within the sash and at least partially within the troughs;
• biasing the planar blades toward a bottom surface of the troughs;
• moving the sash relative to the frame and sliding the planar blades within the troughs;
• and
• pivoting the planar blades from a first position within the trough to a second position retracted out of the trough with at least one actuator in an upper portion of the sash.

A method comprising:

• associating a trough with a window frame;
• orienting a planar blade within a sash and at least partially within the trough;
• biasing the planar blade toward a bottom surface of the trough;
• moving the sash relative to the frame and sliding the planar blade within the trough;
• pivoting the planar blade from a first position within the trough to a second position retracted out of the trough;
• and
• forming a slot within the trough, and rotating the planar blade to a third position within the slot.