发明名称 |
Vacuum-actuated test fixture for printed circuit boards |
摘要 |
For in-circuit and functional testing of loaded printed circuit boards with speed and precision, a vacuum-actuated test fixture utilizes a yielding diaphragm assembly with rigid frame and spring-loaded diaphragm base plate, to distribute downward atmospheric pressure evenly over the entire area of the board without localized stress concentrations. A captive removable diaphragm frame and quick-acting spring-loaded cam latches assure a positive seal around the margin of the diaphragm assembly and along top and bottom edge portions thereof. Ease of assembly and disassembly is promoted. A plug-in vacuum adapter with manual valve provides quick hook-up of the test fixture to a vacuum source. A lower base frame and patchboard assembly allow efficient interfacing of the text fixture with a suitable receiver frame of test apparatus.
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申请公布号 |
US4344033(A) |
申请公布日期 |
1982.08.10 |
申请号 |
US19800186462 |
申请日期 |
1980.09.12 |
申请人 |
VIRGINIA PANEL CORPORATION |
发明人 |
STOWERS, JEFFREY P.;STICKLE, ROBERT E.;CASH, HERBERT B. |
分类号 |
G01R1/073;(IPC1-7):G01R31/02;G01R15/12 |
主分类号 |
G01R1/073 |
代理机构 |
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