Signals and indicators – Indicators – Stress type
Reexamination Certificate
2006-10-02
2010-06-08
Smith, R. A. (Department: 2841)
Signals and indicators
Indicators
Stress type
C116SDIG034, C015S167100, C030S041700, C073S762000
Reexamination Certificate
active
07730846
ABSTRACT:
A strain-responsive visual indicator comprises a pair of overlapping shutter strips (1, 2) adapted to be mounted to a substrate such that strain in the substrate causes relative movement M between them. Each shutter strip comprises an alternating set of windows (5) or (6) and bars (7) or (8) and the distal strip (2) is backed by a strip (3) of a different color exposed through its windows (6), or the distal strip can instead be printed with a set of alternating colors in place of its windows and bars. The effect is that under different strain conditions different color indications from the distal strip (2) will be visible through the windows (5) of the proximal strip (1), in accordance with the relative positions of the two strips. The indicator can be incorporated e.g. in the shaft of a toothbrush to give a visual warning in response to flexure of the shaft if excessive brushing pressure is applied. Numerous other applications and the use of different types of indicia are indicated in the specification.
REFERENCES:
patent: 3572091 (1971-03-01), McFarland
patent: 3613679 (1971-10-01), Bijou
patent: 4213463 (1980-07-01), Osenkarski
patent: 4958853 (1990-09-01), Doty
patent: 5146645 (1992-09-01), Dirksing
patent: 5161891 (1992-11-01), Austill
patent: 5322437 (1994-06-01), Hunter
patent: 6389636 (2002-05-01), Savill
patent: 6425295 (2002-07-01), Meginniss
patent: 6510617 (2003-01-01), Gerdes et al.
patent: 7422256 (2008-09-01), Mueller
patent: 2003/0144596 (2003-07-01), Tsubata
patent: 2008/0072404 (2008-03-01), Wetter
patent: 2009/0168612 (2009-07-01), Robin et al.
patent: 0 291148 (1988-11-01), None
patent: 0 945229 (1999-09-01), None
patent: 1 176 946 (1970-01-01), None
patent: 1 400 484 (1975-07-01), None
patent: 55125431 (1980-09-01), None
patent: 63131038 (1998-06-01), None
patent: WO 9109726 (1991-07-01), None
patent: WO 95/20489 (1995-08-01), None
patent: WO 95/22444 (1995-08-01), None
patent: WO 00/44259 (2000-08-01), None
patent: WO 2005/016664 (2005-02-01), None
Jamieson Ian Andrew
Pett Martin Andrew
McDonnell Boehnen & Hulbert & Berghoff LLP
Qinetiq Limited
Smith R. A.
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