US Patent: 3,539,788 - Method and System for Digitally Signaling Absolute Position


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US Patent: 3,539,788

Method and System for Digitally Signaling Absolute Position

Patentee:

John K. McGee (exact or similar names) - Houston, Harris County, TX

USPTO Classifications:

318/562, 318/594, 341/116, 341/93

Tool Categories:

metalworking machines : machine tool controls

Assignees:

Giddings & Lewis, Inc. - Fond Du Lac, Fond Du Lac County, WI

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	Feb. 27, 1967
Granted:	Nov. 10, 1970

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Giddings & Lewis Manufacturing Co.

Description:

Abstract:

A time-shared system for sequentially digitizing the outputs of several sets of resolvers, each set collectively representing the absolute position of movable elements along different axes. A regularly recurring digital sweep is synchronized with the power used to energize the re- solvers of each set, respective resolvers of each set producing recurring signals whose phases relative to that of the digital sweep represent the positions of the movable elements within successive ranges which are integral multiples (and sub-multiples) of each other.