Thread Subject: .23 (k) (2) should include "no simultaneous
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From: Gregg Vanderheiden
Date: Sun, Mar 18 2007 10:15 AM
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Currently S 1194.23 (k)(2) says
Controls and keys shall be operable with one hand and shall not require
tight grasping, pinching, or twisting of the wrist. The force required to
activate controls and keys shall be 5 lbs. (22.2 N) maximum.
In addition to cleaning up the 'tight twisting' bit, we should also add in
the "no simultaneous actions". That is currently in the Functional
Performance Criteria but not here. Some thought is was covered by "one
hand". But you can easily do things with one hand (including multiple
simultaneous keys) that you cannot do with a headstick, mouthstick, dowl on
a hand splint, prosthetic hand or arthritic hand. So we should add it
Gregg C Vanderheiden Ph.D.
Professor - Depts of Ind. Engr. & BioMed Engr.
Director - Trace R & D Center
University of Wisconsin-Madison
< <http://trace.wisc.edu/> http://trace.wisc.edu/> FAX 608/262-8848
DSS Player at http://tinyurl.com/dho6b
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