Aai Corporation

United States of America As Represented by the Secretary of the Air Force

Irwin R Barr

Nicholas J LaCosta

Bertram W Gore

An articulated, intravascular pump having multiple pump sections linked together for relative motion and driven by a common drive cable is disclosed. Each pump section is relatively short, so that it may easily pass through bends in an insertion catheter, the iliofemoral artery and the aorta artery. Disposed in the aortic arch during operation, the pump includes means for selectively directing the discharge blood flow from each pump section to inlets of major arteries branching from the arch.

Articulated heart pump and method of use

Methods and apparatus are provided for remotely controlling the bending of an elongated member by implementing energy responsive control over a member that is configured from two plastic materials of differing coefficients of thermal expansion. The disclosed methods and apparatus are particularly applicable for use in applications such as surgical catheterization where control of the member from a position relatively remote from the member is desired.

Remote steering system for medical catheter

A multiple reflector solar energy reflecting arrangement has a pair of concavely arcuate reflectors constructed for side-by-side interlocking relation, the adjacent sides of the reflectors having respective interfitting connectors thereon, the connector on one of the reflectors being a male connector unit and the connector on the other reflector being a female connector unit.

Solar energy concentrating and collecting arrangement

A solar energy concentrating and collecting arrangement in which a plurality of laterally adjacent partial cylindrical oblong concave reflector-concentrators form the roof of a house, school or other building, particularly a heat utilization building, with a corresponding plurality of ganged movable collectors movably supported in spaced relation above and along the length of the oblong roof/reflectors. Each roof/reflector-concentrator has at least three radii, for enabling accommodation of wide variations of the sun angles during the various seasons of the year and during each day of a given season, while still affording a desired concentration of solar energy on the collector. The roof/reflector-concentrators are preferably substantially symmetrical in curvature and width about a vertical central plane, and face vertically upward to form an inverted modified cycloid-like surface.

1. An explosive device comprising an explosive charge, a casing enclosing said charge, said casing being formed of rubber, a plurality of projectiles arranged around the exterior of said casing in juxtaposition therewith, means for detonating said explosive charge, and container means enclosing said projectiles and said explosive charge.

Growing community of inventors

Lutherville, MD, United States of America

Irwin R Barr