Title: Carriage train precision linear positioning system
Application Number: 86103025 Application Date: 1986.04.30
Publication Number: 1005861 Publication Date: 1986.12.17
Approval Pub. Date: 1989.08.16 Granted Pub. Date: 1989.08.16
International Classifi-cation: C03B33/02
Applicant(s) Name: PPG Industries Inc. Address:
Inventor(s) Name: Duaght. Alvin. Bollinger;Martin. Roy. Elliott
Attorney & Agent: SHI XIAOMEI WANG YANBIN
Abstract:
    A system for positioning a plurality of carriages to preselected positions across a supported article includes moving a train of detachably interconnected carriages with an engine carriage functionally connected to a driving facility, and simultaneously detaching selected ones of the carriages from the train at predetermined positions across the article, in a sequential manner, beginning with the selected carriage farthestmost from the engine carriage, and holding the selected carriages to a member bridging the article. The positioning cycle is completed by stopping the engine train at its preselected position. Thereafter, a work operation is performed on the article by moving a work operation performing means associated with each of the selected carriages from an inoperative or retracted position to an extended or operative position.
Time: 5