Back to results
US 4,393,699 AGranted
Pneumatic adhesion tester
AssigneeThe United States of America as represented by the Secretary of Commerce
InventorJames F. N. Seiler, Jr.
Life of this patent
Estimating the term…
Abstract
This tester comprises a fixture which is bonded to a coating or surface, a plate and a membrane which are sealed together along their peripheries. A hole extends through the membrane and at least into the plate for receiving the fixture so that its bonding surface is flush with the membrane. The plate has a gas opening which is connectable with a source of pressurized gas.
Claims4
A pneumatic adhesion tester comprising:
- a fixture having a bonding surface adapted to be bonded to a coated or uncoated substrate,
- a plate and a membrane sealed together solely along their outer peripheries, said membrane being adapted to directly contact said coated or uncoated substrate,
- a hole extending through said membrane and at least into said plate for receiving said fixture so that said bonding surface is substantially flush with said membrane,
- means for introducing a pressurized gas between said plate and membrane, said membrane having said hole being adapted to be thereby pressed into gas-tight contact with said coated or uncoated substrate, said bonding surface remaining flush with said membrane until the bonding surface separates, and
- means for measuring the pressure of said gas introduced between said plate and membrane.
2 more elements
Dependencies are inferred from the claim text.