The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 04, 1995
Filed:
Sep. 03, 1993
J Michael Griffin, Syracuse, NY (US);
William R Witkowski, Marcellus, NY (US);
Welch Allyn, Inc., Skaneateles Falls, NY (US);
Abstract
A hand-held compact diagnostic device is provided with a pair of instrument heads each requiring an independent source of illumination. The instrument heads may be rotated into a fully extended position and once therein, may be smoothly turned through 360 degrees in consecutive 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 interaction 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.