초록 ▼

An ultrasound scanning system having an ultrasound transducer (10) which provides ultrasound images (33), a computer to process the ultrasound information and to render the ultrasound image (33) correctly positioned and scaled for display on a flat panel monitor (29) which has a display size similar

An ultrasound scanning system having an ultrasound transducer (10) which provides ultrasound images (33), a computer to process the ultrasound information and to render the ultrasound image (33) correctly positioned and scaled for display on a flat panel monitor (29) which has a display size similar to the actual physical size of the ultrasound image (33). A half silvered mirror (30) redirects the image (33) so that the user (32) perceives the image (33) as if it occupied the actual physical location of the structures (34, 35) appearing in the image (33). An illumination (22) unit projects onto a patient (13) a line of light (3) that is within the imaging plane (4) projected by the ultrasound transducer (10) into the patient (13). Alternatively a video camera may be used to display a guide line (15) that is coplanar with the imaging plane (4). A mechanical mount (16) combines the transducer (10), monitor (29), mirror (30), and source of illumination (22) or video camera in a correct geometrical alignment.

대표청구항 ▼

An ultrasound scanning system having an ultrasound transducer (10) which provides ultrasound images (33), a computer to process the ultrasound information and to render the ultrasound image (33) correctly positioned and scaled for display on a flat panel monitor (29) which has a display size similar

An ultrasound scanning system having an ultrasound transducer (10) which provides ultrasound images (33), a computer to process the ultrasound information and to render the ultrasound image (33) correctly positioned and scaled for display on a flat panel monitor (29) which has a display size similar to the actual physical size of the ultrasound image (33). A half silvered mirror (30) redirects the image (33) so that the user (32) perceives the image (33) as if it occupied the actual physical location of the structures (34, 35) appearing in the image (33). An illumination (22) unit projects onto a patient (13) a line of light (3) that is within the imaging plane (4) projected by the ultrasound transducer (10) into the patient (13). Alternatively a video camera may be used to display a guide line (15) that is coplanar with the imaging plane (4). A mechanical mount (16) combines the transducer (10), monitor (29), mirror (30), and source of illumination (22) or video camera in a correct geometrical alignment. ter portion of the front rotor inlet section further including at least one frontwardly extending lug positioned so as to project into and rotate through the space between the radial inner circumferential surface of the shroud and the radial outer circumferential surface of the bearing housing as the front rotor inlet section rotates relative thereto, for agitating material that enters the space. 2. The assembly of claim 1, wherein the at least one lug has a leading surface with respect to the rotational direction which is raked back relative to the rotational direction so as to urge the agitated material radially outwardly during the rotation. 3. The assembly of claim 2, wherein the shroud includes at least one radially facing opening communicating with the space in position for receiving and passage of the radially outwardly urged agitated material therethrough. 4. The assembly of claim 3, wherein the radially facing opening extends through the shroud in a direction radially outwardly from the space in the rotational direction. 5. The assembly of claim 2, wherein the shroud includes at least one downwardly facing opening therethrough for the material in the space to drop through. 6. The assembly of claim 1, wherein the front center portion includes at least one radially outwardly extending anti-wind flight on the radial outer circumferential edge portion for contacting material disposed between the front center portion and the shroud and urging said material radially outwardly therefrom. 7. The assembly of claim 6, wherein the rotor has a rearward end opposite the front rotor inlet section and the anti-wind flight includes a surface facing the predetermined rotational direction which is raked rearwardly for urging material in contact therewith radially outwardly and rearwardly. 8. A threshing rotor and front bearing housing assembly for an agricultural combine, comprising: a rotor including a front rotor inlet section and an opposite rear end, the front rotor inlet section having a front center portion rotatable in a predetermined rotational direction about an axis extending therethrough and through the rear end, the front center portion having a generally circumferential radial outer periphery therearound having a predetermined radial extent, and at least one helical inlet auger impeller flight extending around the front rotor inlet section and rearwardly therefrom, the at least one flight having a radial inner periphery located at about the radial outer periphery of the front center portion and a leading edge extending radially outwardly therefrom in a direction so as to be swept back relative to the predetermined rotational direction; a front bearing housing located in closely spaced opposing relation to the front center portion and supporting the front rotor inlet section for rotation in the predetermined rotational direction about the axis, the front bearing housing having a radial outer periphery which is at least generally coaxial with the front center portion and which has a predetermined radial extent which is less than the radial extent of the front center portion; and an anti-wind shroud extending at least substantially around the front bearing housing radially outwardly therefrom such that a generally annular space exists therebetween around the bearing housing, the shroud having a radial inner periphery having a predetermined radial extent greater than the radial extent of the front center portion such that the annular space is located in opposing relation to the front center portion, the shroud having a generally helicoid outer peripheral wiping surface which extends radially outwardly in the predetermined rotational direction from the shroud and which is located radially outwardly of the radial inner periphery of the leading edge of the at least one helical inlet auger flight, the wiping surface having an edge located in close proximity to the leading edge of the at least one helical inlet auger flight