Patent ID: 6199812
Filing Date: 2001-03-13
Classification: A61B,F16M,G02B

Abstract:
A swivel arm assembly for connecting a microscope to a support stand, said swivel arm assembly comprising:a support lever having a center portion and a pair of approximately isosceles arm portions extending from said center portion of said support lever to provide upper and lower ends spaced from said center portion of said support lever;an upper shaft supported at said upper end for rotation relative to said support lever;a lower shaft supported at said lower end for rotation relative to said support lever;an operating lever having a center portion and a pair of approximately isosceles arm portions extending from said center portion of said operating lever to provide upper and lower operating ends spaced from said center portion of said operating lever;an axle connecting said center portions of said support lever and said operating lever, said operating lever being mounted for rotation about an axis of said axle relative to said support lever;means connecting said upper operating end of said operating lever to said upper shaft and said lower operating end of said operating lever to said lower shaft to transmit a moment arising at one of said upper and lower shafts to the other of said upper and lower shafts;whereby rotation of said one of said upper and lower shafts causes rotation of said other of said upper and lower shafts.