摘要:
Embodiments of the subject invention can utilize a single coil structure for dual-mode operation. In a specific embodiment, a single coil structure can be used as a volume coil in the transmitting phase and as a phase array in the receiving phase. In an embodiment, a transmit coil array in accordance with the subject invention can be utilized for one or more of the following: 1) parallel RF excitation on an MRI scanner equipped with a multiple-channel transmitter; 2) serial RF excitation with the use of a switch system with a single channel transmitter; and 3) generation of a homogeneous B1 field for regular MRI with the use of a power splitter on a standard scanner. In a specific embodiment, the use of a concentric double loop coil with different tunings of inner and outer loops can be implemented. In an embodiment, the coil elements can be decoupled using the CRC mode of a concentric double loop coil. In an embodiment, a surface coil transmit array can provide better compatibility with a receive array. In a specific embodiment, an over-coupled technique can be used to improve the phase control of the transmitting pulse.
摘要:
A rail-mounted hanging file arrangement includes a generally horizontally elongated rail which is supported in upwardly spaced relationship from the worksurface so as to extend generally along but above the rear edge thereof. The rail defines therein a longitudinally elongated slot which opens forwardly of the rail, and a file hanging frame is releasably attached to the rail at substantially any position therealong so that the frame is carried entirely by the rail and projects rearwardly a small distance therefrom to permit conventional hanging type files to be stored just rearwardly of the rail adjacent the rear edge of the worksurface. The file hanging frame includes a pair of generally parallel side legs which are spaced so as to permit a plurality of hanging files to be suspended therebetween, and the hang tabs provided on opposite ends of the files can engage the side legs. These side legs of the file hanging frame at their front ends fixedly join to front legs which project downwardly and also slope inwardly in converging relationship with one another. The front legs at the lower ends thereof respectively join to securing legs of short extent which are insertable into the slot of the support rail to fixedly but releasably secure the frame to this support rail.
摘要:
A shallow tray of the type for use on a worksurface or other support top having a construction which enables several such trays to be disposed vertically one above the other and at least partially nested one within another, either when the trays are empty or contain only a small number of documents therein to permit compact storage on a worksurface top while utilizing minimal space. The tray construction in addition allows the trays to be vertically cross-stacked one on top of another to provide for desired vertical separation and hence at least limited visibility and access to the individual trays in the stack, while at the same time providing significant storage capability and document separation while minimizing the amount of space utilized on the worksurface top.
摘要:
The present invention provides an attachment apparatus for drilling that may be coupled to an excavator. The attachment apparatus generally has a base, a motor and one or more brackets, with the motor positioned in front of the base and the one or more brackets positioned behind the base. A plurality of holes in the one or more brackets having parallel center axes in an attachment plane may be used in coupling the attachment to the excavator. The base of the attachment may have a major plane that is approximately parallel to the attachment plane, and the axis of rotation of the motor may be approximately perpendicular to the major plane of the base. A push plate apparatus is provided for possible use with the main attachment for pushing pipes, etc., into a hole. Furthermore, methods of making and using the present attachment and/or push plate are further provided.
摘要:
A support rail assembly for positioning work-related accessories adjacent a worksurface such as a table. The rail assembly includes a horizontally elongated rail supported in upwardly spaced relationship from the worksurface by a support arm or stanchion. The rail defines therein an elongate slot which permits the mounting of accessories in various positions on the rail which are convenient to the user. The rail is supportable from either the rear edge of a worksurface or may be cantilevered forwardly from a wall adjacent the worksurface or from a wall panel to which the worksurface is attached.
摘要:
The subject invention pertains to a technique and device that can isolate and separate resultant electromagnetic fields of volume coils at high frequency. In an embodiment, an RF shield can be used to isolate and separate resultant electromagnetic fields. In an embodiment, the shield can have a cylindrical shape that can form a partially closed volume in which an object to be imaged, or sample, can be inserted. In an embodiment, the RF shield can be part of a RF coil. In a specific embodiment, some parts of a volume coil can be inside a shield, and the other parts of a volume coil can be outside the shield. The shielding of some of the parts of a volume coil can create conductor patterns corresponding to the specific parts inside the shield and the specific parts outside the shield. In an embodiment, two or more conductor patterns can be placed in proximity to the same shield and either be driven independently, driven together, or act as receiving elements, combined or uncombined. This embodiment is advantageous because the combination of conductor patterns can be optimized by the flexibility of separating the fields of end-rings from the fields of leg currents.
摘要:
A storage bin for storage and containment of cabling associated with work-related items such as computers, telephones and the like. The storage bin is mountable generally along a terminal edge of a furniture component such as a worksurface, so that cabling can be routed from atop the worksurface downwardly into a hollow interior of the bin. The storage bin additionally includes pairs of overlapping side walls at each end of the bin which are movable relative to one another to enable opening and closing of the bin when mounted on the worksurface.