Coating processes – Measuring – testing – or indicating – Thickness or uniformity of thickness determined
Patent
1981-02-26
1982-11-09
Hoffman, James R.
Coating processes
Measuring, testing, or indicating
Thickness or uniformity of thickness determined
427 10, 427 34, 427180, 427184, 427203, 427256, 427402, 427421, 427422, 427423, 427425, B05D 112, B05D 104, B05D 106, B05D 102
Patent
active
043584713
ABSTRACT:
Although the method and apparatus of the present invention can be utilized to apply either a uniform or a nonuniform covering of material over many different workpieces, the apparatus (20) is advantageously utilized to apply a thermal barrier covering (64) to an airfoil (22) which is used in a turbine engine. The airfoil is held by a gripper assembly (86) while a spray gun (24) is effective to apply the covering over the airfoil. When a portion of the covering has been applied, a sensor (28) is utilized to detect the thickness of the covering. A control apparatus (32) compares the thickness of the covering of material which has been applied with the desired thickness and is subsequently effective to regulate the operation of the spray gun to adaptively apply a covering of a desired thickness with an accuracy of at least plus or minus 0.0015 inches (1.5 mils) despite unanticipated process variations.
REFERENCES:
patent: 1755321 (1930-04-01), Hendrickson
patent: 3016464 (1962-01-01), Bailey
patent: 3068556 (1962-12-01), Kramer
patent: 3137756 (1964-06-01), Gunther et al.
patent: 3395278 (1968-07-01), McDivitt
patent: 3411852 (1968-11-01), Marinozzi
patent: 3428774 (1969-02-01), Faust et al.
patent: 3570449 (1971-03-01), Blecherman et al.
patent: 3606162 (1971-09-01), Lehmann
patent: 3627973 (1971-12-01), Smith
patent: 3645623 (1972-02-01), Patten
patent: 3711312 (1973-01-01), Yoshida et al.
patent: 3716021 (1973-02-01), Fry
patent: 3758233 (1973-09-01), Cross et al.
patent: 3769486 (1973-10-01), Braucht
patent: 3775582 (1973-11-01), Iceland
patent: 3778580 (1973-12-01), Bierwith
patent: 3792928 (1974-02-01), Poilleux
patent: 3853093 (1974-12-01), Baker et al.
patent: 3865525 (1975-02-01), Dunn
patent: 3915114 (1975-10-01), Pelton
patent: 3940608 (1976-02-01), Kissinger et al.
patent: 3953704 (1976-04-01), Bejat et al.
patent: 4003115 (1977-01-01), Fisher
patent: 4007704 (1977-02-01), Haviland
patent: 4028787 (1977-06-01), Cretella et al.
patent: 4050133 (1977-09-01), Cretella et al.
patent: 4089293 (1978-05-01), Lyons
patent: 4099481 (1978-07-01), Lyons
Derkacs Thomas
Fetheroff Charles W.
Matay Istvan M.
Toth Istvan J.
Hoffman James R.
TRW Inc.
LandOfFree
Control apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-745803