Richard Henry Craig

US Patent:

6460377, Oct 8, 2002

Filed:

Dec 17, 1999

Appl. No.:

09/466515

Inventors:

Earl E. Robinson - Tyrone GA
Richard W. Craig - Toledo OH

Assignee:

Owens-Brockway Glass Container Inc. - Toledo OH

International Classification:

G01M 1900

US Classification:

65158, 738659

Abstract:

Apparatus for testing air flow through a dual-stage blowhead that includes an adapter block with a blowhead cup for releasably receiving a dual-stage blowhead. The adapter block has a first block passage for feeding test air to a first inlet of the blowhead for conducting blow air to a parison, and a second block passage for feeding test air to a second inlet of the blowhead separate from the first inlet for conducting finish cooling air. Air is directed from a common source separately to the first and second block passages, and air flow is measured in each path. When air flow through the finish cooling air path is less than a predetermined threshold, or less than a predetermined ratio with respect to the final blow air, this may indicate a need to redrill or otherwise rework the finish cooling passages in the dual-stage blowhead.