Other

Luxtec Corporation

Peter Vari

Denton A Cooley

Bernard Clark

Frederick Morris

Lawrence E Delaney

William L Chesterson

Method and apparatus for isolating hydraulic devices in a stacked hydraulic circuit of modular design employing an isolator valve module which enables partial and/or complete isolation of components in a hydraulic system to be isolated for inspection, testing, maintenance or replacement, by selective operation of the isolator valves in the isolator valve module. The isolator valve module may be a sub-plate module supporting other modules or a plurality of stacks of modules or may be a 'sandwich' type module sandwiched between a sub-plate and another module or between two sandwich-type modules.

Hydraulic isolation valve

In an automatic on-off sprinkler, water enters an inlet and passes through a hollow interior region to the outlet. A reciprocating member in the hollow region normally blocks the outlet when water entering a narrow passageway fills a central chamber above the reciprocating member. A large gap between the hollow region ID and the reciprocating member OD permits friction-free movement of the reciprocating member. A flexible, water-tight diaphragm seals the central region, preventing liquid entering the narrow passageway from communicating with a lower region from passing to the outlet. A sensor detects an emergency condition, unsealing a control opening larger than the narrow passageway, allowing liquid to rapidly escape through the unsealed control, dropping the pressure in the central region, whereby a pressure imbalance lifts the reciprocating member closing the outlet. When the control opening is resealed, liquid pressure in the central region sealed by the water-tight membrane increases. The internal pressure urges the reciprocating member to the closed position when the central region is filled, which condition is maintained during normal temperature conditions. The flexible water-tight diaphragm eliminates the need for O-ring seals which create undesirable frictional forces. The reciprocating member may be spherical or cylindrical and may be formed of a suitable metal or other material. A light closing spring may be provided to normally urge the spool to the closed position. The control valve may be used to control two or more conventional sprinkler heads.

On-off control for sprinklers and the like employing a sealing membrane

Spectacles having integral illumination

An illumination assembly includes a lens housing having a first end and a second end, a first lens having first and second opposing surfaces with the first lens being disposed in a first end of the lens housing. A cane having a first a second surfaces is disposed in the lens housing with the first surface of the cane being spaced a predetermined distance from a first surface of the lens and wherein the second surface of the cane is polished and disposed against a first polished surface of a fiber optic bundle.

Illumination assembly

In an automatic turn-off sprinkler, water enters an inlet and passes through a hollow interior region to the outlet. A reciprocating spool in the hollow region normally blocks the outlet enabling incoming water to fill a chamber above the spool. The gap between the ID of the bore and the OD of the spool permits sliding movement of the spool while providing a watertight seal preventing liquid entering the small opening communication with a chamber above the top of the spool from passing to the outlet opening. A heat sensor detects an emergency condition, unsealing a normally sealed opening allowing liquid pressing upon the spool to escape through the unsealed opening dropping the pressure on the top of the spool, whereby water pressure upon the bottom of the spool lifts the spool above the outlet. When the heat sensor seals the control opening, liquid pressure upon the top surface builds. Although pressure on the bottom and top surfaces is substantially equal, gravity urges the spool to the closed position which is maintained during normal conditions. The watertight seal is retained by controlling gap size, eliminating the need for O-ring seals which create undesirable frictional forces. The spool may be spherical or cylindrical. A light closing spring may be provided to normally urge the spool to the closed position. A plurality of on-off sprinkler devices may be controlled by a common heat sensor, if desired.

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Newtown, PA, United States of America

Peter Vari