Browse Prior Art Database

Components Handler for Corrosive Environment

IP.com Disclosure Number: IPCOM000040331D
Original Publication Date: 1987-Oct-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 2 page(s) / 85K

Publishing Venue

IBM

Related People

Carter, DL: AUTHOR [+2]

Abstract

Holders made of quartz and supported on a gas bearing film on a flat surface enable processing of components in a subatmospheric pressure and corrosive environment. With reference to the figures, bottomless component holders 1 are constructed of rectangular pieces of quartz assembled with suitable optical cement to form a closed chamber 2 when placed on flat base 3. The holder has a longitudinal groove 4 along either side to receive planar components 5, such as circuit substrates, and the components are loaded and unloaded through end port 6, sealed by a quartz plug 7 with O-ring 8. A spring may be inserted in one groove 4 to urge components toward the opposite groove.

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Components Handler for Corrosive Environment

Holders made of quartz and supported on a gas bearing film on a flat surface enable processing of components in a subatmospheric pressure and corrosive environment. With reference to the figures, bottomless component holders 1 are constructed of rectangular pieces of quartz assembled with suitable optical cement to form a closed chamber 2 when placed on flat base 3. The holder has a longitudinal groove 4 along either side to receive planar components 5, such as circuit substrates, and the components are loaded and unloaded through end port 6, sealed by a quartz plug 7 with O-ring 8. A spring may be inserted in one groove 4 to urge components toward the opposite groove. Holders 1 are ground and lapped on their bottom surface to permit a small gas bearing surface separation between holder 1 and base 3, with the gas being supplied from the gas bearing opening 10 on base 3. Holders 1 are moved along their length between pairs of motor-driven friction rollers 12. As a holder moves, it passes over spaced and valved vacuum ports 13 and 14. Ports 13 coincide with grooves 11 and parts 14 are aligned with chambers 2. Bearing gas is thus removed by ports 13 before reaching chamber 2, and the chamber can be selectively evacuated through port 14.

(Image Omitted)

During processing, a holder carrying components passes under an optical processing probe 15 and is aligned by appropriate drive roller actuation or movement of base 3. Corr...