Magnification assembly for digitizer cursor

Details Magnification assembly for digitizer cursor Magnification assembly for digitizer cursor

1989-11-13

1992-10-06

Brier, Jeffery A.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

33 1M, 178 18, G09G 508

Patent

active

051535700

ABSTRACT:
An assembly utilizable with a digitizer cursor for increasing the accuracy of position determinations made by the operator is disclosed. The assembly comprises in combination a magnifying lens and a connector for attaching the magnifying lens to the cursor in a region about the cross-hairs of the cursor. The connector includes a retainer that is attachable to the cursor and a pivot connected to the lens. The retainer is adapted to be affixed to a surface of the housing near the viewsight of the cursor. The hinge includes a stop adapted to hold the lens parallel to the plane of the cross-hairs. The hinge also includes a cam surface that provides friction between the hinge and the cursor so that the lens is held away from the region above the cross-hairs when the lens is swung away from the viewsight by the operator.

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Advertisement of Summagraphics Corporation for Microgrid II Series, (Form No. 181, Rev. D, Mar. 1988).
Advertisement of Summagraphics Corporation for The Intelligent Digitizer (Form 380 10K).
J. Titus; "Digitizing Tablets offer choices of formats, operating modes, and pointers", Apr. 1986, pp. 69-72, 74 E.D.N. Electrical Design News, vol. 31, No. 8.
T. A. Noble; "Graphic-input devices for CAD/CAM", Feb. 1985, pp. 106-110, Machine Design, vol. 57, No. 4.

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