Patent ID: 8739942
Filing Date: 2014-06-03
Classification: F16F

Abstract:
1. A controlled-friction device comprising: a first element having a second element mounted thereon to slide in a sliding direction, and friction retaining means arranged to exert between the two elements an opposing force against relative movement of the two elements, wherein the friction retaining means comprises: a friction member mounted securely to the first element to rub against the second element via a friction surface extending parallel to the sliding direction; and a presser member for exerting a thrust force on the friction member, urging the friction member against the second element in a direction normal to the relative movement of the elements; wherein the retaining means comprise link means linking the friction member to the first element causing the friction member to separate from the second element during movement in either direction of the second element relative to the first element, wherein the first element is in the form of a sleeve, and the second element is in the form of a rod having facets, each of which has pads of the friction member rubbing thereagainst, and wherein the presser member comprises a plurality of springs extending between two adjacent pads.