Abstract: A system and method to facilitate thickness measurement of bio-material workpiece, preferably a sheet, and to topographically map the sheet into similar thickness zones for later use. In particular, the system may include a three-axis programmable controller for manipulating a bio-material workpiece with respect to a thickness measurement head. The measurement head may include a plurality of sensors for simultaneous measurement of a plurality of points, with the sensors being adapted to contact the sheet or not. A robust human-machine interface is also provided for process control, preferably including a touch-screen monitor. A marking head may be provided for marking the zones or otherwise indicating the thickness in different areas. Two platens are desirably used in parallel for increased thoughput; the workpiece on one platen may be measured while the other is marked. The system and method are especially suited for assessing and marking pericardial tissue for forming heart valve leaflets.

Abstract: A system and method to facilitate thickness measurement of bio-material workpiece, preferably a sheet, and to topographically map the sheet into similar thickness zones for later use. In particular, the system may include a three-axis programmable controller for manipulating a bio-material workpiece with respect to a thickness measurement head. The measurement head may include a plurality of sensors for simultaneous measurement of a plurality of points, with the sensors being adapted to contact the sheet or not. A robust human-machine interface is also provided for process control, preferably including a touch-screen monitor. A marking head may be provided for marking the zones or otherwise indicating the thickness in different areas. Two platens are desirably used in parallel for increased thoughput; the workpiece on one platen may be measured while the other is marked. The system and method are especially suited for assessing and marking pericardial tissue for forming heart valve leaflets.

Abstract: A microphone for reducing distortion of an audio signal due to wind or plosive sounds emitted by a user, including a microphone cartridge defining a central axis and a cylinder contiguous with the perimeter of the cartridge. A windscreen defines first, second and third acoustical paths. The first and second paths are through the side of the windscreen and the third path is along the axis of the windscreen. The third path has an acoustical resistance greater than the first or second paths. The second path has an acoustical resistance greater than the first path.

Abstract: A high energy density electrochemical organic electrolyte solvent cell with highly oxidizing cathodes; the organic solvent being free of ethers and comprising a mixture of propylene and/or ethylene carbonate admixed with other specific carbonates and/or specific esters.

Abstract: A table for use in administering chiropractic adjustments including at least one column mounting a body support and vertically movable relative to a base. Detent means bear against the column. A first air cylinder serves to elevate the column. A second air cylinder imposes a force against the detent means to provide a braking effect to hold the column at the upper limit of travel when the column is raised with a patient lying in part on the body support. When air pressure is shut off to both cylinders, the first cylinder retracts and air pressure is trapped in the second cylinder. The force imposed by the air pressure in the second cylinder to maintain the braking effect is substantially equal to the force required to lift the weight of the patient carried on the body support. The braking effect is overcome when a chiropractic thrust is applied to the body of a patient.