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Jeff R Angel

David Sean York

An ergonomic non-motorized vibratory concrete screed is provided that is designed to be used in the fashion of a standing one-man wet screed having a double barred, floating strike plate oriented in a planar fashion with which to strike and consolidate a concrete slab surface. The vibratory concrete leveling device according to the invention includes a bracket assembly having an upper surface and a lower surface. The lower surface of the bracket assembly includes a plurality of spaced apart slots, each spaced apart slot extending across a width of the bracket assembly. A corresponding plurality of screed bars are removably positioned in the plurality of spaced apart slots. Each of the plurality of screed bars are loosely fitted into each corresponding slot to promote vibratory action during use. An elongated handle is provided having a first end attached to the bracket assembly and a second end for grasping by a user.

Ergonomic non-motorized vibratory concrete screed

A radioactive substance administrator including a syringe structured to receive a dosage of the radioactive substance therein; a containment housing structured to contain the syringe and including a radioactivity retardant material, structured to substantially attenuate the emergence of radioactivity through the containment housing, and a plunger track structured to contain a plunger assembly of the syringe movably therein; an exterior actuation assembly operatively associated with the containment housing and structured to actuate the plunger assembly of the syringe; and a secondary shielding assembly operatively associated with an outlet of the containment housing and structured to permit the passage of the radioactive substance to the patient while also attenuating radioactivity emerging from the outlet of the containment housing and radioactivity emanating from the radioactive substance exiting the containment housing.

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Mt. Vernon, IN, United States of America

Jeff R Angel