Other

Alliant Techsystems Inc.

John G Rupert

Robert L Alford

Kenneth N Jensen

A celestial instrument as a memorial sun dial or star clock has a flat plate body or a spherical body that includes two hemispheres facing one another and spaced apart by a circular gap allowing sunlight to pass through the gap in the instrument. A planar date ring containing graphics surrounds the flat plate or the sphere. Upper and lower gnomons are rotatably secured to the plate or to the hemispheres. A stand includes a holder for a latitude arm that supports the gnomons. When the gap is placed in alignment with the ecliptic, sunlight can pass through a gap parallel to the plate or through a lens within the spherical body focusing a spot of light onto a display surface. A pointer on a rotatable shadow arm indicates the time on a 24-hour clock face.

Celestial instrument adapted for use as a memorial or sun dial clock

An apparatus and method for controlling roll of a projectile is disclosed. The projectile includes two sections decoupled about a roll axis. The front section includes a stator and the rear section includes a rotor and a static spin imparting member. The spin rate of the projectile is controlled by utilizing the rotor and stator in combination as a generator to brake the spin or as a motor to establish spin.

Electro-mechanical roll control apparatus and method

A transparent face plate is mounted to a back plate in parallel spaced relationship by double face adhesive strip material extending about the facing edge portions of the back plate and face plate, leaving a pocket between the back plate and face plate. The adhesive strip material does not extend across one common edge portion of the back plate and face plate so that a slot is formed between the plates and a sign plate can be slid through the slot, into and out of the pocket. A layer of opaque material is applied to the inside surface at the edge portions of the face plate to form an opaque border about the sign assembly which hides the double face adhesive strip from view through the face plate, and the opaque material extends beyond the adhesive strip material inwardly with respect to the pocket of the sign assembly so as to hide the perimeter of the sign plate from view through the face plate. Openings are formed in the opposite edge portions of the sign plate, and a sign plate removal tool is provided that comprises a substantially flat strip of material with cleats protruding from opposite sides thereof, whereby the tool can be inserted through the slot between the back plate and face plate, adjacent the sign plate, so that a cleat of the tool engages the opening in the sign plate and the tool can withdraw the sign plate from the pocket.

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Mahtomedi, MN, United States of America

John G Rupert