Pneumatically actuated hold down gate

Details Pneumatically actuated hold down gate Pneumatically actuated hold down gate

1991-04-23

1992-10-06

Nguyen, Vinh

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

324158P, 324158R, G01R 106, G01R 3102

Patent

active

051535041

ABSTRACT:
A hold down gate to be used in conjunction with a circuit board test device is provided and includes a stationary frame movably affixed to a probe plate, which is rigidly disposed on the probe surface of the test device. The stationary frame includes piston chambers therein and means for providing pressurized fluid to the chamber, and releasing the fluid from the chamber. Pistons, disposed in the chambers have one end which protrudes downwardly from the stationary frame and are rigidly affixed to the movable frame. The movable frame is sized to contact the perimeter of the circuit board being tested. Thus, when a cricuit board is placed on the probe plate the stationary frame is moved such that the movable frame is in abutting relation with the perimeter of the board. The stationary frame is then latched into place to prevent any further movement. Pressurized fluid is then provided to the piston chambers of the stationary frame, forcing the pistons in a downward direction. The movement of the pistons then cause the movable frame to move downwardly such that the circuit board is firmly and reliably seated on the test probes and electrical continuity between the electronic components on the board and the test equipment is provided.

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IBM Technical Disclosure Bulletin, "Mass Termination Test Probe Fixture", vol. 21, No. 2, Jul. 1978, pp. 765-766.

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