US 7,739,918 B1 · Adhesion testing device

Abstract

The present invention provides a testing apparatus and method for testing the adhesion of a coating to a surface. The invention also includes an improved testing button or dolly for use with the testing apparatus and a self aligning button hook or dolly interface on the testing apparatus. According to preferred forms, the apparatus and method of the present invention are simple, portable, battery operated rugged, and inexpensive to manufacture and use, are readily adaptable to a wide variety of uses, and provide effective and accurate testing results. The device includes a linear actuator driven by an electric motor coupled to the actuator through a gearbox and a rotatable shaft. The electronics for the device are contained in the head section of the device. At the contact end of the device, is positioned a self aligning button hook, attached below the load cell located on the actuator shaft.

Claims7

Dependent claims

A device for testing the adhesion of a coating to a substrate, said device comprising:

a body having a head portion and a tail portion;
said body having an internal cavity, said device having an electrical motor disposed therein operationally connected to a movable linear actuator, an encoder positioned in said device and operationally connected to said linear actuator for determining the relative position of said linear actuator, said device further having a button hook engagement section for releasingly engaging a button, said button hook engagement section pivoting about an axis through said linear actuator, said tail portion terminating in a contact area open to said internal cavity, a load cell operationally connected to said linear actuator, and a visual display mounted on said device.

Dependencies are inferred from the claim text.

Adhesion testing device

Life of this patent

Adhesion testing device

Life of this patent

Abstract

Claims7