An integral switch means on a printed circuit board is provided by a plurality of parallel conductor segments having insulating gaps which are aligned in a column transverse to the conductor tracks. Posts supported on the printed circuit board support and align a rigid support member for an elastomeric...http://www.google.se/patents/US4476357?utm_source=gb-gplus-sharePatent US4476357 - Switching apparatus employing conductor contracts on a movable elastomeric member
