Abstract: An adjustable-width spring-operated roller shade that maintains proper orthogonal tracking at all available widths within the shade's range of width adjustment. The adjustable-width roller shade utilizes two overlapping window shades and a telescoping roller to provide a shade that is repeatedly width-adjustable within its original range of width adjustment. To keep the shade sufficiently perpendicular to the roller as the shade winds onto the roller, orthogonal tracking spacers, such as continuous, pliable strips constructed from the same material as the shades, are attached to non-overlapped portions of the shade material to compensate for the extra layers of material existing at the overlapped portion of the shades. Thus, the roller shade maintains proper orthogonal tracking of the shade at all available widths within the shade's range of width adjustment.

Abstract: An adjustable-width spring-operated roller shade that maintains proper orthogonal tracking at all available widths within the shade's range of width adjustment. The adjustable-width roller shade utilizes two overlapping window shades and a telescoping roller to provide a shade that is repeatedly width-adjustable within its original range of width adjustment. To keep the shade sufficiently perpendicular to the roller as the shade winds onto the roller, orthogonal tracking spacers, such as continuous, pliable strips constructed from the same material as the shades, are attached to non-overlapped portions of the shade material to compensate for the extra layers of material existing at the overlapped portion of the shades. Thus, the roller shade maintains proper orthogonal tracking of the shade at all available widths within the shade's range of width adjustment.