Benthos, Inc.

Data Industrial Corporation

Charles A Woringer

William H Hulsman

Harold M Miller

David V Rose

Frank Raspante

Donald R Stark

John H Waygan

This invention relates to apparatus and methods for in-line testing for leaks in flexible containers traveling along a production line at high speeds. The apparatus inspects semi-rigid plastic containers at a high capacity by using multiple sensors at fixed displacements along a compression section while analyzing the response of the sensors such that internal pressure decays of leaky containers are readily discernible without interrupting the flow of the production line.

Multiple sensor in-line container inspection apparatus and method

A flow sensor using induction pickup and having an improved paddle wheel type impeller within an impeller housing having a concave opening defining a protective skirt area for shielding a portion of the paddle wheel and a stem of the paddle wheel with a varying thickness for reducing cavitational backflow and therefore achieving a precise measurement of the fluid flow velocity and a high turndown ratio is disclosed.

Insertion paddle wheel flow sensor for insertion into a fluid conduit

The internal pressure of a sealed container is characterized by tapping to vibrate a wall of the container, and then basing the characterization of the internal pressure on a frequency spectrum of the vibration and stored data measured from vibrating other sealed containers. The stored data is generated by vibrating a series of tests controllers having different, known internal pressures.

Analyzing internal pressure of a sealed container using frequency spectra

Growing community of inventors

N. Falmouth, MA, United States of America

Charles A Woringer