Scissors-type window operator

An operator for controlling movement of a window sash generally pivotable relative to a window frame about a first edge between open and closed positions, said operator comprising:

• base securable to the window frame;
• a first arm pivotable about a first axis on said base;
• a second arm pivotally mounted to the first arm about a second axis;
• a third arm pivotally attached to the first arm and translatably attachable to a second edge of the window sash opposite a first edge about which the window sash pivots relative to the frame;
• a fourth arm pivotally attached to the second arm and the third arm, and translatably attachable to a second edge of the window sash opposite the first edge about which the window sash pivots relative to the frame;
• and
• means for driving the second arm about the second axis and the first arm about the first axis to selectively move the window sash when attached to the third and fourth arms between open and closed positions.

A operator for controlling movement of a window sash generally pivotable relative to a frame about a first edge between open and closed positions, said operator comprising:

• a sun gear pivotable about an axis;
• a drive gear driveably engaging the sun gear;
• a first arm pivotable about the axis;
• a second arm pivotally attached to the first arm and driveably engaging the sun gear,
• a third arm pivotally attached to the first arm and slidably attachable to a second edge of the window sash opposite a first edge about which the window sash pivots relative to the frame;
• and
• a fourth arm pivotally attached to the second arm and the third arm and slidably attachable to a second edge of the window sash opposite a first edge about which the window sash pivots relative to a frame.

A connector assembly for slidably attaching an arm of a window operator to a window sash, comprising:

• a metal track having a C-shaped cross-section and attachable to the window sash;
• a plastic shoe translatable along the track and at least partially disposed within the track;
• a plastic slider portion including a post, the post being disposable through an opening in the arm of the window operator such that an end of the post protrudes from the opening;
• a metal rod extending axially substantially parallel to the track and extending through said shoe and said slider portion to pivotally attach the shoe to the slider portion;
• and
• means disposable about the end of the post for securing the arm of the window operator to the connector with the post disposed through an opening in the arm of the window operator.

A connector assembly for slidably attaching an arm of a window operator to a window sash, comprising:

• a metal track having a C-shaped cross-section and attachable to the window sash;
• a plastic shoe translatable along the track and at least partially disposed within the track;
• a plastic post pivotally attached to the shoe about an axis substantially parallel to the track, the post being disposable through an opening in the arm of the window operator such that an end of the post protrudes from the opening;
• and
• a plastic clip slidably mountable on the arm of the window operator and disposable about the end of the post for securing the arm of the window operator to the connector assembly with the post disposed through an opening in the arm of the window operator.

A connector assembly for slidably attaching an arm of a window operator to a window sash, comprising:

• a metal track attachable to the window sash;
• a plastic shoe translatable along the track;
• a plastic post pivotally attached to the shoe about an axis substantially parallel to the track, the post including a first proximal surface and being disposable through an opening in the arm of the window operator such that an end of the post protrudes from the opening;
• means disposable about the end of the post for securing the arm of the window operator to the connector with the post disposed through an opening in the arm of the window operator;
• and
• means for rotationally biasing the plastic post such that an axially outwardmost extending end of the post is directed outwardly from the shoe and the track, said means for rotationally biasing the plastic post including a spring attached to the shoe, said spring contacting the first proximal surface of the post such that the axially outwardmost extending end of the post is directed outwardly from the shoe and the track.

An operator for controlling movement of a window sash relative to a frame, said window sash being pivotable relative to an axis, said operator comprising:

• a drive mechanism securable to the window frame, said mechanism controllably moving a first drive arm having an opening at one end thereof;
• a metal track having a C-shaped cross-section and attachable to the window sash;
• a plastic shoe translatable along the track and at least partially disposed within the track;
• a plastic slider portion including a post, the post being disposable through said arm opening with an end of the post protruding from the opening;
• a metal rod extending axially substantially parallel to the track and extending through said shoe and said slider portion to pivotally attach the shoe to the slider portion;
• and
• means disposable about the end of the post for securing the operator first drive arm to the post.

An operator for controlling movement of a window sash relative to a window frame, said window sash being pivotable relative to an axis, said operator comprising:

• a drive mechanism securable to the window frame, said mechanism controllably moving a first drive arm having an opening at one end thereof;
• a metal track having a C-shaped cross-section and attachable to the window sash;
• a plastic shoe translatable along the track and at least partially disposed within the track;
• a plastic post pivotally attached to the shoe about an axis substantially parallel to the track, the post being disposable through said arm opening with an end of the post protruding from the opening;
• and
• a plastic clip slidably mounted on the first drive arm and disposable about the end of the post for securing the operator first drive arm to the post.

An operator for controlling movement of a window sash relative to a frame, said window sash being pivotable relative to an axis, said operator comprising:

• a drive mechanism securable to the window frame, said mechanism controllably moving a first drive arm having an opening at one end thereof;
• a metal track attachable to the window sash;
• a plastic shoe translatable along the track;
• a plastic post pivotally attached to the shoe about an axis substantially parallel to the track, the post including a first proximal surface and being disposable through said arm opening with an end of the post protruding from the opening;
• means disposable about the end of the post for securing the operator first drive arm to the post;
• and
• means for rotationally biasing the plastic post such that an axially outwardmost extending end of the post is directed outwardly from the shoe and the track, said means for rotationally biasing the plastic post including a spring attached to the shoe, said spring contacting the first proximal surface of the post such that the axially outwardmost extending end of the post is directed outwardly from the shoe and the track.