Adjustable-width roller shade configured to maintain orthogonal tracking at all available widths

An adjustable-width roller shade comprising:

• a telescoping roller assembly having an adjustable width, including:
• an inner roller having an outer longitudinal surface defining a cylinder with a longitudinal ridge carried radially outward from the cylinder, an outer tube having an outer longitudinal surface defining a cylinder with a longitudinal channel cut through a substantial portion of the longitudinal extent of the outer surface, and
• the inner roller concentrically received within the outer tube with the ridge positioned within the channel to form an adjustable width telescoping roller assembly;
• and
• a telescoping shade assembly carried on the telescoping roller assembly and varying in width in cooperation with changes in the width of the telescoping roller assembly, including:
• a first shade is attached to the ridge of the inner roller,
• a second shade is connected to the outer surface of the outer tube, and
• the first and second shades having inner portions that overlap each other by an amount that varies with the width of the telescoping shade assembly.

An adjustable-width roller shade comprising:

• an inner roller having an outer longitudinal surface defining a cylinder with a longitudinal ridge carried radially outward from the cylinder;
• an outer tube having an outer longitudinal surface defining a cylinder with a longitudinal channel cut through a substantial portion of the longitudinal extent of the outer surface;
• the inner roller concentrically received within the outer tube, with the ridge positioned within the channel, to form a telescoping roller assembly of adjustable width;
• a first shade connected to the longitudinal ridge of the inner roller and defining an outer portion located longitudinally away from the outer tube;
• a second shade connected to the outer tube and defining an outer portion located longitudinally away from the inner roller;
• the first shade having an inner portion being overlapped by an inner portion of the second shade to form a telescoping shade assembly of adjustable width carried on the telescoping roller assembly;
• a first orthogonal tracking strip attached to the outer portion of the first shade and having a thickness selected to compensate for the overlapped condition of the inner portion of the first shade when winding the first shade around the roller assembly;
• a second orthogonal tracking strip attached to the outer portion of the second shade and having a thickness selected to compensate for the overlapped condition of the inner portion of the second shade when winding the second shade around the roller assembly;
• and
• a spring motor coupled to the roller assembly and operative to store spring energy as the first and second shades are moved from a rolled-in configuration to a rolled-out configuration, and to use stored spring energy to move the first and second shades from the rolled-out configuration to the rolled-in configuration.

An adjustable-width roller shade comprising:

• a telescoping roller assembly having an adjustable width;
• a telescoping shade assembly carried on the telescoping roller assembly and varying in width in cooperation with changes in the width of the telescoping roller assembly;
• the telescoping shade assembly characterized by two shades that have inner portions that overlap each other by an amount that varies with the width of the telescoping shade assembly;
• each shade defining an outer portion located away from the overlapped inner portion of the corresponding shade;
• a first orthogonal tracking strip attached to the outer portion of the first shade and having a thickness selected to compensate for the overlapped condition of the inner portion of the first shade when winding the first shade around the roller assembly;
• and
• a second orthogonal tracking strip attached to the outer portion of the second shade and having a thickness selected to compensate for the overlapped condition of the inner portion of the second shade when winding the second shade around the roller assembly.