Wayne W Munroe

US Patent:

6542089, Apr 1, 2003

Filed:

Sep 21, 2001

Appl. No.:

09/957371

Inventors:

David B. Johnson - South Ogden UT
Joseph Haines - Ogden UT
Jay Calkin - Ogden UT
Scott L. Harris - Chula Vista CA
Wayne W. Munroe - Lake Oswego OR
Brian G. Russell - Tigard OR

Assignee:

Tektronix, Inc. - Beaverton OR

International Classification:

H03M 122

US Classification:

341 16

Abstract:

A rear-mount integrated rotary encoder comprises a mechanical portion and a printed circuit board portion. The mechanical portion of a rear mount integrated rotary encoder comprises a housing including a bushing for receiving one end of a rotatable. The rotatable shaft passes through an open front portion of the housing and is mechanically connected to exposed rotatable circuit contacting members. The printed circuit board portion has an encoder contact pattern formed thereon. The printed circuit board has an area larger than the cross sectional area of the housing. The encoder contact pattern surrounds an aperture in the circuit board. The rotatable shaft of the rotary encoder is passed through the aperture such that the rotatable circuit contacting members contact the encoder contact pattern on the circuit board. The housing includes projections, substantially orthogonal to the circuit board, for engaging a feature of the circuit board for securing the integrated encoder in an assembled state. Alternatively, the housing may glued to the circuit board.