Viscous shear damping strut assembly

F - Mech Eng,Light,Heat,Weapons – 16 – F

Patent

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Details

F16F 9/12 (2006.01) B64C 1/14 (2006.01) B64D 29/08 (2006.01) F16D 57/02 (2006.01) F16F 7/02 (2006.01) F16F 9/348 (2006.01)

Patent

CA 2691283

A damping device using viscous shear to moderate substantially linear movement. The device has a housing with one or more reservoirs containing a viscous fluid, such as silicone, and one or more retractable struts that can extend from the housing. The strut has a portion formed as a toothed rack, and an associated axle has a pinion gear on a portion associated with the toothed rack of the strut. The teeth of the rack mate with teeth of the pinion gear. A disk, or preferably series of spaced disks, can be mounted on the axle inside the reservoir to dampen linear movement of the strut, from shear with a static plate adjacent to the disk on the axle. The relatively fixed, spaced disks or plates are adjacent to or interdigitated with the disks on the gear axles to dampen linear movement of a strut.

L'invention porte sur un dispositif d'amortissement à cisaillement visqueux de déplacements sensiblement linéaires. Le dispositif comporte un logement muni d'un ou plusieurs réservoirs d'un fluide visqueux tel que du silicone et une ou plusieurs jambes rétractables sortant du logement. Une partie de jambe consiste en une crémaillère à laquelle est associé un axe portant un pignon engrenant sur les dents de la crémaillère. Un disque ou de préférence une série de disques espacés peuvent être montés sur l'axe à l'intérieur du réservoir pour amortir les déplacements linéaires de la jambe résultant du cisaillement avec une plaque fixe jouxtant le ou les disques solidaires de l'axe. Des disques ou plaques sensiblement fixes et espacés sont intercalés entre les disques solidaires de l'axe du pignon pour amortir les déplacements linéaires de la jambe.

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