Abstract: Disclosed herein are devices, systems, and methods relating to A hand exerciser assembly can include a base, a hand exerciser, a hand attachment mechanism, and a hand exerciser engine. The base can be configured to support the hand exerciser assembly. The hand exerciser can be coupled to the base and configured to removably receive a hand of a user and to exercise hand, wrist, or both muscle groups and to isolate a digit of the hand to be exercised. The hand attachment mechanism coupled to the hand exerciser and configured to secure the hand to the hand exerciser. The hand exerciser engine operatively coupled to the hand exerciser and configured to cause the hand exerciser to exercise the hand.

Abstract: Apparatus and methods for automatically feeding fish at predetermined intervals are disclosed herein. An automatic fish feeder can include a housing, at least one cover, a feeding track, and a valve. The housing can include a peripheral outer cover and at least one access hole. The food storage reservoir can be connected to the housing and configured to be accessible by an access hole. At least one cover can be removably attached to the peripheral outer cover and substantially seal the food storage reservoir. The feeding track can be coupleable to the food storage reservoir and configured to receive and distribute food from the food storage reservoir at individual rates. The valve can be coupleable to the feeding track and configured to control the flow of food from the feeding track. The valve can include a rod and a counter configured to move the rod relative to the feeding track.

Abstract: Apparatus and methods for automatically feeding fish at predetermined intervals are disclosed herein. An automatic fish feeder can include a housing, at least one cover, a feeding track, and a valve. The housing can include a peripheral outer cover and at least one access hole. The food storage reservoir can be connected to the housing and configured to be accessible by an access hole. At least one cover can be removably attached to the peripheral outer cover and substantially seal the food storage reservoir. The feeding track can be coupleable to the food storage reservoir and configured to receive and distribute food from the food storage reservoir at individual rates. The valve can be coupleable to the feeding track and configured to control the flow of food from the feeding track. The valve can include a rod and a counter configured to move the rod relative to the feeding track.

Abstract: Anti-theft devices are provided for use with both new and previously installed utility boxes. The utility box includes a sidewall, typically set into the ground, and the anti-theft device includes a bracket that hooks beneath the sidewall. The bracket also includes a threaded bore disposed through a fastening piece. The utility box also includes a cover that seals a top opening of the sidewall. The cover includes a hole for receiving a bolt. The threaded bore aligns with the hole in the cover so a bolt can engage the threaded bore to secure the cover to the bracket.

Abstract: A ribose-related compound is added to whole blood or packed red cells which have suboptimal function as measured by decreased levels of 2,3-DPG in order to rejuvenate the red blood cells to normal function as seen by raised levels of 2,3-DPG. Two representative ribose-related compounds are D-ribose and inosine.

Abstract: An automatic aquatic food and water delivery device for supplying food and water to living creatures in an aquarium over an extended period of time including a reservoir positioned above the water line of an aquarium. A mixture of water and food is stored in the reservoir in a predetermined ratio. The reservoir has a sealable intake port for receiving food and water, and an outlet port through which the food and water mixture is delivered to an aquarium. An air supply is disposed within the reservoir and oriented generally towards the outlet port to prevent blockage of the outlet port. A delivery line is attached to the reservoir and an adjustable valve is positioned in the delivery line to control the flow rate of the food and water mixture into the aquarium.

Abstract: The block puzzle of the present invention includes a first set of eight pieces comprising a straight piece, an L-shaped piece, a square piece, a T-shaped piece, a Z-shaped piece, a center piece, a left-hand piece, and a right-hand piece. Each of the eight pieces comprise a combination of four cubic units, all of the cubic units being the same size. A second set of eight pieces identical to the first set can be combined with the first set, and the combined 16 pieces may be assembled into a plurality of configurations, all of which produce an overall cube having 64 of the cube units therein and having a length, width and height equal to four of the cube units. A modified form of the invention includes a set of 16 pieces which are flat and which include three straight pieces, three square pieces, three Z-shaped pieces, three L-shaped pieces, and four T-shaped pieces. Each of these 16 pieces are formed from four square flat units.

Abstract: The block puzzle of the present invention includes a first set of eight pieces comprising a straight piece an L-shaped piece, a square piece, a T-shaped piece, a Z-shaped piece, a center piece, a left-hand piece, and a right-hand piece. Each of the eight pieces comprise a combination of four cubic units, all of the cubic units being the same size. A second set of eight pieces identical to the first set can be combined with the first set, and the combined 16 pieces may be assembled into a plurality of configurations, all of which produce an overall cube having 64 of the cube units therein and having a length, width and height equal to four of the cube units. A modified form of the invention includes a set of 16 pieces which are flat and which include three straight pieces, three square pieces, three Z-shaped pieces, three L-shaped pieces, and four T-shaped pieces. Each of these 16 pieces are formed from four square flat units.

Abstract: In a force transducer for producing an output signal proportional to the magnitude of a force applied to a force receiving platform cantilevered from a base through a compound flexure unit, comprising: (a) a C-shaped flexure having a thin, flexible middle section and opposed rigid outer sections engaging, respectively, the opposed surfaces of the platform and base and, (b) an auxiliary flexure spring system comprising parallel spaced apart leaf springs cantilevered, respectively, from the opposed rigid sections joined together at their free ends by a clamp adjustable to vary the effective length of the springs as required to calibrate the transducer to a predetermined force range.