A - Human Necessities – 63 – H
Patent
A - Human Necessities
63
H
46/114
A63H 3/38 (2006.01) F16F 15/023 (2006.01)
Patent
CA 1166008
VISCOUS FLUID DAMPING SYSTEM ABSTRACT OF THE DISCLOSURE A damping system for damping relative rotation of a pair of members having confronting surfaces spaced apart by a primary gap or zone of capillary dimension, a viscous damping fluid in the gap contacting the confronting surfaces of said members and held in the gap by capillary attraction to provide a damping action upon rotation of the members relative to one another, the arrangement providing a non-migrating self- supporting viscous fluid damping system. In a preferred embodiment of the invention, the confronting surfaces of the members defining the capillary gap or zone are in non-parallel relationship, for example, one of the confronting surfaces may be planar and the other conical wherein the rotational axis of the rotatable member is disposed on the point of the cone to provide a point contact bearing minimizing friction and centering the viscous damping material adjacent the axis of rotation to provide a more uniform controlled damping action. Still another feature of the invention resides in the provision of a secondary capillary viscous fluid reservoir of slightly larger capillary dimension than the primary capillary zone between the members. The reservoir serves to replenish any fluid lost in the capillary zone due to evapora- tion for example, and eliminates the criticality of metering a precise amount of viscous fluid to the primary zone initially.
365285
Borden Ladner Gervais Llp
Cotey John
LandOfFree
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