06390625 is referenced by 142 patents.

A focusing mechanism for an optical instrument includes an eyepiece having at least one lens element retained within an eyepiece housing, a stationary carrier for retaining the eyepiece, and a rotatable thumb wheel. A pair of levers operatively connect the eyepiece housing with the rotatable thumb wheel, the thumb wheel including corresponding pairs of cam channels on either side for receiving one end of a corresponding lever, the remaining end of each lever engaging the eyepiece housing, wherein rotational movement of the thumb wheel produces axial movement of the eyepiece relative to said carrier.

Title
Focusing mechanism
Application Number
9/774726
Publication Number
6390625 (B1)
Application Date
January 31, 2001
Publication Date
May 21, 2002
Inventor
Ervin Goldfain
Syracuse
NY, US
Allan I Krauter
Skaneateles
NY, US
Chris R Roberts
Skaneateles
NY, US
Ronald A Hauptli
Warners
NY, US
Steven R Slawson
Camillus
NY, US
Agent
Wall Marjama & Bilinsk
US
Assignee
Welch Allyn
NY, US
IPC
A61B 3/10
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