Universal QFP tray transfer method

Details Universal QFP tray transfer method Universal QFP tray transfer method

1996-07-09

1997-12-23

Kramer, Dean

Handling: hand and hoist-line implements

Utilizing fluid pressure

Venturi effect

414737, B66C 102

Patent

active

057000450

ABSTRACT:
An improved method for transferring a semiconductor carrier tray is disclosed. The method herein provides for transferring a semiconductor carrier tray from a first location to a second location by first positioning a cap member to cover the mouth of at least one cup of a semiconductor carrier tray. The capping member contacts the uppermost surface of the cup wall. A partial vacuum is applied to the capped cup, and atmosphere is evacuated from the capped cup, adhering the semiconductor tray to the capping member. Movement of the capping member causes movement of the carrier tray from a first location to a second location. When the carrier tray has been positioned at its final destination, the vacuum is released causing separation of the carrier tray and the capping member. A vacuum cap apparatus is also disclosed.

REFERENCES:
patent: 3205057 (1965-09-01), Bernard et al.
patent: 3482682 (1969-12-01), Cronkhite
patent: 4557514 (1985-12-01), Cushman et al.
patent: 4639030 (1987-01-01), Bini
patent: 4799722 (1989-01-01), Marzinotto

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