Abstract:
A threshold-activated piston device with dampened response for use an aircraft seat, includes a chamber, a piston, a releasable fastener and a coupler, wherein the fastener is configured to release the piston for a stroke in response to an impact force that exceeds a predetermined threshold. The predetermined threshold may be set by a friction member, spring, a tension fastener, a check valve mechanism and/or a catch mechanism. Motion of the piston device resulting from the impact force imparted is dampened by conversion of kinetic energy into thermal energy. The method of energy conversion may be through, but not limited to, friction, viscous damping or velocity squared damping. The piston device may be configured for reuse in allowing the stroke to be reset. Additional fluid ports and/or a spring enables resetting of the stroke.
Abstract:
A washing machine includes a water tub arranged in a case and a damper installed between the case and the water tub for damping vibrations of the water tub. The damper includes a plunger having one end supported on the case; a rod having one end supported on the water tub and the other end movably inserted to the plunger; a housing arranged to wrap around some of the plunger and the rod and including a friction member arranged between the housing and the plunger to contact an outer circumferential surface of the plunger; and a switching device configured to be in a first state in which the rod is coupled to the housing and able to move within the plunger along with the housing and a second state in which the rod is decoupled from the housing and able to move solely within the plunger.
Abstract:
Cage (1) configured to house thereinside a friction ring to be used in friction dampers for washing machines, characterized in thatit comprises a first (11) and a second piece (12) configured to be coupled by introducing the one in the other one.
Abstract:
A shock absorption device is comprised of an inner cylinder assembly threadably engaged within an outer cylinder assembly. The outer cylinder assembly includes a cap shaped member, at least one protruding member, and at least one first spring member. The inner cylinder assembly includes at least one compressive member, at least one second spring member, and at least one movable piston member. When an external impact force F1 is applied to the cap shaped body member, the first threaded portion of the outer cylinder assembly jumps over the second threaded portion of the inner cylinder assembly as provided by elastic movement of the resilient ring member about the cap shaped body member. The thread jumping results in the first spring member compressing and the protruding member pushing the piston member which pushes and compresses the second spring member and the compressive member providing a reactive force F2 to absorb the external impact force F1.
Abstract:
A shock absorber (11) comprising a tubular first portion in the form of a shock absorber casing (12) telescopically receiving a tubular second portion in the form of a piston (13) is disclosed. The first portion has an alignment member (15) which encapsulates a friction element (17) wrapped around said second portion. The alignment member (15) is longitudinally movable in between a first stop bearing (18) and a second stop bearing (19). The novel friction element (17) has a plurality of tips or protrusions (25) which extend, parallel to the longitudinal direction of the piston (13), towards the two stop bearings (18,19) and which hit either of said bearings (18,19) during the oscillatory back and forth movement of the alignment member (15) during operation.
Abstract:
A seal cleaning device for seals located at the interface of the inner and outer tubes of a telescopically acting suspension or like unit; said device characterised in comprising a collar and at least one flexible cleaning projection; said cleaning projection adapted for insertion between a said seal and an outer surface of a said inner tube; said cleaning device adapted to removal of detritus from between a said seal and said inner tube.
Abstract:
Die Erfindung betrifft ein Kolbendichtelement (51) mit mindestens einem hülsenförmigen, in Längsrichtung des Kolbendichtelements durch zwei Flächen (58, 59) begrenzten Verformungsbereich (53), wobei dieser Verformungsbereich (53) eine Mantelfläche (62) mit mindestens einem, die zwei genannten Flächen (58, 59) verbindenden Kanal (65) aufweist sowie eine Verzögerungsvorrichtung mit einem derartigen Kolbendichtelement. Dazu ist der Kanal (65) zumindest abschnittsweise schraubenlinienförmig gewunden angeordnet. Mit der vorliegenden Erfindung wird ein Kolbendichtelement entwickelt, das bei einer mit herkömmlichen Kolbendichtelementen vergleichbaren Effizienz eine von der Umgebungstemperatur weitgehend unabhängige Wirkung erzielt.