Long Manufacturing Ltd.

Blackstone Corporation

Clark E Stohl

Paul K Beatenbough

Kris J Meekins

Eugene A DeCastro

Roger Goodfriend

The invention relates to an improved energy exchange structure, comprising generally parallel plates,connected to define a hollow passageway for the generally circumferential flow of fluid between an inlet and an outlet, said plates undulating in cross-section to define obliquely disposed crossing opposing valleys arranged in a spiral disposition.

Spiral ripple circumferential flow heat exchanger

The invention relates to an improved energy exchange structure, comprising generally parallel plates, joined to define a hollow passageway for the generally circular flow of fluid between an inlet and an outlet, said plates undulating in cross-structure to define obliquely disposed crossing opposing valleys, and comprising multiple sets of generally parallel valleys and an involute disposition of said valleys.

Circumferential flow heat exchanger

A method and apparatus are provided for machining and disintegrating urinary calculi by subjecting the urinary calculi to ultrasonic forces transmitted by a wave guide in one passageway of a catheter while under observation through an optical system in a second parallel passage in the catheter.

Methods and apparatus for disintegration of urinary calculi under direct

A transducer, wave guide and attachment means are provided as a screw member adapted to fit in a threaded opening in a transducer and having a tool engaging head at one end, an axial passage therethrough, a recess around the axial passage at the end opposite the tool engaging head, a wave guide slip fitted in the passage with a solidified bonding mass such as braze alloy or solder around the end of the wave guide in the recess.

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Lakewood, NY, United States of America

Clark E Stohl