Torqmaster, Inc.

Sikorsky Aircraft Corporation

Gl&v Dorr-oliver Inc.

Mikhail Gelfand

Edward T Rude

David A Carpenter

Yuriy Gmirya

Kenneth D Engquist

William F Schwartz

Alexander C Probst

Richard Opalanko

A lubrication system includes an external pump system which pumps air out of the housing and develop negative pressure therein in response to a loss of lubrication condition. The negative pressure operates as an air lock to minimize or prevent lubricating oil loss from the housing while an internal lubrication system continues to distribute lubricating oil&#x2014;which although now increasing in temperature&#x2014;still operates to lubricate the gearbox components. For further ballistic tolerance, the housing is a compound housing that reduces or closes the penetration and further minimizes lubricating oil and negative pressure loss. The housing may be still further hardened by an armor layer.

Lubrication system with prolonged loss of lubricant operation

In a solids profile measurement system for determining the quality of a solids bed formed from a liquid-solid slurry in a vessel, a sensor adapted to generate signals indicative of a profile as measured by progressively immersing the sensor deeper into the slurry is provided. An extension mechanism, at least a portion of which is coupled at one end to the sensor and at an opposite end to a piece of processing equipment, is provided to affect retrograde movement in a first direction to immerse the sensor in a slurry, and in a second direction opposite the first direction. A controller in communication with the extension mechanism is also provided and issues commands thereto and receives signals generated by the sensor.

Solids measurement system

The present invention provides a small, cylindrical hinge, or pivoting pin, which can be configured to produce various profiles of torque versus angle. The desired profile of torque versus angle is achieved by the shapes of the hinge shaft and the spring plates of the hinge. Detents at one or more angular positions can be achieved, with or without frictional damping torque at other angles. The friction of our hinge is produced symmetrically about the hinge axis, eliminating the problems associated with asymmetric construction.

Friction hinge with detent capability

A hinge that provides equilibration and variable friction for a display screen or a laptop lid. In the preferred embodiment, a torsion rod provides a restoring force which increases as the lid is moved either direction from its vertical position. A friction hinge, of well know design, uses a spring band about a shaft. One end of the torsion rod is coupled to the end of the band of the friction hinge, so that the moment in the torsion rod increases or decreases the moment in the spring band of the hinge, modifying the frictional torque accordingly. This allows the frictional torque to be low as the lid is first opened, and larger as the display reaches the useful range of its motion.

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Milford, CT, United States of America

Mikhail Gelfand