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US 4,364,272 AGranted
Multi-position adjustable test fixture
AssigneeThe Boeing Company
InventorsJames A. Daniel, George T. Pinson
Life of this patent
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Abstract
A text fixture supports a test article in selected positions relative to a fixed point within the test article. A stylus extends from the test article through slots in two spaced-apart positioning plates. The alignment of the slots establishes the position of the stylus and the corresponding test article position. Means for controlling the positioning plates are provided.
Claims8
A test fixture for selectively positioning a test article in space comprising:
- a support for said article which permits limited angular movement of said article about a selected fixed point within said article, said support comprising a rotatable outer ring and a cooperating inner ring through which said article extends, the inner and outer rings having cooperating spherical surfaces which permit universal movement of the article about said fixed point;
- a pair of spaced-apart positioning plates each rotatably mounted about a common axis;
- at least one cam slot through each of said positioning plates;
- positioning means for establishing instantaneous axial position of either of said positioning plates;
- and
- a drive stylus secured to said test article and extending through the cam slot of each of said positioning plates, whereby the disposition of said stylus and said article is established by the relative angular relation of the two positioning plates.
3 more elements
Dependencies are inferred from the claim text.