Abstract: A specimen slicing mechanism such as a microtome or an ultramicrotome in which a specimen is held by a specimen arm and is moved through a knife. The specimen arm is made of two segments which are secured to each other via a lockable hinge assembly. The lockable hinge assembly uses a hinge between the two segments as well as a locking mechanism. When locked, the two segments are in a fixed relationship which causes the specimen to be forced through the knife by the action of the motor. When the locking mechanism is unlocked, the segment of the specimen arm holding the specimen is able to rotate (“float”) around the hinge; thus allowing the specimen to be sliced by the knife as gravity pulls the segment downward.

Abstract: A cable-driven pan and tilt mounting system for cameras and other similar and related devices which provides such devices with a limitless range of motion. The invention utilizes two motors with each motor independently controlling the panning or tilting of the camera, respectively. The use of a cable drive in the apparatus eliminates the inaccuracy inherent in similar gear-driven systems and further simplifies the design making it more cost-effective and efficient. Furthermore, even though no gears are utilized in the cable drive, the present invention simulates a geared motion and, in doing so, provides smooth and accurate repositioning for any device mounted to it.

Abstract: An improved communication channel between two sites in which power for the second site is communicated via the cable from the first site's electrical source. Since the electrical source is used to create a higher voltage instead of power from the host apparatus at the first site, enhanced transmission is possible permitting the cable to extend in excess of one hundred fifty feet. Further, since the remote second site does not require any power at its location, it can operate in a wider range of applications and environments.