A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 19/02 (2006.01) A61B 1/06 (2006.01) A61B 1/227 (2006.01) A61B 3/12 (2006.01)
Patent
CA 2130657
21 ABSTRACT OF THE DISCLOSURE A hand-held compact diagnostic device is provided with a pair of instrument heads each requiring an inde- pendent source of illumination. The instrument heads may be rotated into a fully extended position and once there- in, may be smoothly turned through 360 degrees in consecu- tive ninety degree intervals to accommodate any preferred orientation desired by the user. Each instrument head is biased in the fully extended position and a rotated closed position. Each instrument head is also adjustably biased to an aligned position for proper closure by the interac- tion of an adjustment collar with a pair of ball detents. The adjustment collar further biases each head in three additional positions at ninety degree intervals for use when fully extended. A pair of central terminals maintain continuous contact between each rotatable head of the device while a pair of radial terminals are in electrical contact only when the instrument head is in a fully extended position. When the instrument head is rotated into the closed position, the radial terminals disengage to open the circuit between the source of illumination in the instrument head and a battery source contained within the device.
Griffin John Michael
Witkowski William R.
Borden Ladner Gervais Llp
Welch Allyn Inc.
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