Abstract: A stroke adjusting attachment for bicycles or the like enables selective changing of the diameter of the orbit which is traveled by a foot pedal to adapt a particular bicycle to persons having different leg lengths or who may have physical impairments which limit foot movement. The pedal is fastened to the attachment rather than being directly secured to a crank arm of the bicycle in the conventional manner. A track member is secured to the bicycle crank arm and the pedal is fastened to a slider which is travelable to any of a plurality of different locations along the track member. Blades extend from the track member adjacent to opposite surfaces of the crank arm thereby maintaining the attachment in a fixed orientation relative to the crank arm. A particular attachment of this form can be fitted onto a variety of crank arms of different sizes and shapes.

Abstract: An apparatus in which conductive developer material is transported into contact with a region of a surface having image areas recorded thereon. An electrical field is generated and the developer material develops the image areas. In one mode of operation, the electrical field is substantially perpendicular to the surface over one portion of the region and substantially non-perpendicular thereto over the remaining portion of the region. In another mode of operation, the electrical field is substantially perpendicular to the surface over the entire region.

Abstract: An optical waveguide linear modulator array comprising an optical waveguide having an input coupler and an output coupler. The waveguide or substrate is formed of electrooptical material with different shaped electrodes secured thereto. An electrical field applied between the electrodes modulates the radiation passing through the waveguide so that the radiation may be phase shifted or shaped into desired outputs.