Other

Joseph P Carroll

Patrick Edward Frye

James M Shoji

A thruster device and associated methods are provided. The thruster device comprises a frustoconical inner layer and a frustoconical outer layer that surrounds the inner layer such that the inner and outer layers cooperate to define a spiral flow passage therebetween. An outlet, such as a nozzle, is attached to an exit end of the thruster device such that the outlet is in fluid communication with the spiral flow passage. In one embodiment, the thruster device includes an end flow cap that is also attached to the exit end and establishes the fluid communication between the spiral flow passage and the outlet. The end flow cap includes at least one channel for directing the propellant from the spiral flow passage to the outlet. The design of the thruster device allows the frustoconical inner and outer layers to be assembled without galling or damaging the spiral flow passage.

Method of making a thruster device for solar radiation

A display device for displaying selected portions of a plurality of sheet-like articles. The display device includes a base member mountable to a vertically-extending structure and retaining rails extending inwardly across the front surface of the base member from the elongate edges of the base member. The retaining rails define channels between the underside of the retaining rails and the front surface of the base member. The retaining rails are spaced from the front surface of the base member by a distance such that the retaining rails hold a plurality of articles in a selected display configuration independent of the orientation of the display device and such that the articles retained by the retaining rails are movable relative to the base member upon application of pressure to the portion of the articles exposed through the opening defined by the retaining rails to slide the articles along the channel.

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Seattle, WA, United States of America

Joseph P Carroll