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152results about How to "Eliminate problem" patented technology

Check valve for a fluid administration system

InactiveUS20050194047A1Eliminate problemDead zone may be reduced and eliminatedCheck valvesEqualizing valvesBiomedical engineeringCheck valve
In general, the present invention includes a connector for a fluid administration system, the connector comprising a housing, a first conduit and a second conduit defined by said housing, wherein said first conduit is in fluid communication with said second conduit, and at least a first check valve disposed within said housing; and a fluid administration system, comprising a fluid input device, a fluid output device operatively connected to said fluid input device, and a check valve disposed within said fluid administration system, said check valve adaptable to allow flow of a fluid from said fluid output device to said fluid input device. The check valve of the fluid administration system comprises a first body portion defining a first passageway for fluid flow, and a second body portion defining a second passageway for fluid flow, said second body portion adapted to be in receiving relationship with said first body portion such that said first passageway and said second passageway are in fluid communication with one another, and wherein said second body portion is movable relative to said first body portion between a first position and a second position, wherein when said second body portion is in said first position, fluid flow may occur in a first direction, but not in a second direction, said second direction being substantially opposite to said first direction, and when said second body portion is in said second position, fluid flow may occur in said second direction.
Owner:MALLINCKRODT INC

Optical system for miniature personal displays using reflective light valves

An illumination system and display are disclosed that include a light for providing light, a polarizing beam splitter (PBS) having a first surface that receives the light from the backlight. The PBS passes a first polarization of the received light to a curved mirror located at a second PBS face, which second PBS face is opposite the first PBS face. The curvature of the mirror provides the optical power necessary for proper imaging, while limiting the reflecting area of the mirror provides an aperture stop that determines the numerical aperture of the optical system. The display also includes a quarter wave plate and a spatial light modulator (SLM). The quarter wave plate is located between the PBS and mirror and changes the first polarization of light, directed from the PBS to the mirror, to a second polarization which is reflected from the mirror back to the PBS. The SLM receives this second polarization of light after reflection thereof by the PBS, and selectively rotates the second polarization of light to form an image forming light having the first polarization, which is reflected back to the PBS. Through an exit face, the PBS provides the rotated image forming light to a viewer. Between the viewer and the PBS exit surface, an imaging lens system is provided that includes at least one folding mirror.
Owner:IBM CORP

Propulsive tail propeller assembly or tail duct fan assembly with cyclic and collective control and/or a method of thrust vectoring for aircraft maneuvering and for helicoptor single rotor head anti torque

A method of aircraft propulsion and control more specific to rotorcraft propulsion and control using forward, neutral and aft thrust in addition to forward/aft thrust coupling from the propulsive tail assembly through cyclic and collective pitch of the non-flapping, ridged propeller/fan blades and/or from a turbojet/turbofan vectored thrust system. The cyclic blade pitch induces a drive shaft bending moment that is used to provide aircraft directional control and also provides anti-torque control for a single rotor head helicopter. The forward/reverse collective thrust actuator, phase lag elevator effect cyclic actuator and phase lag rudder/anti-torque effect cyclic actuator do not require complex control mixing. The vectored thrust system also provides aircraft directional control and anti-torque control individually or combined with the propeller/fan assembly. This assembly eliminates the requirement of rudder or elevator control on a fixed wing aircraft and the requirement of a tail rotor on a conventional helicopter while increasing speed and maneuverability. A slowed or stopped ridged X-wing rotorcraft hub with a modified circular arc airfoil would not require cyclic/collective control.
Owner:REILLY NOLAN JOSEPH
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