Thermoplastic elastomer air spring

Details Thermoplastic elastomer air spring Thermoplastic elastomer air spring

F - Mech Eng,Light,Heat,Weapons

16

F

F16F 9/05 (2006.01) B60G 11/28 (2006.01) F16J 3/00 (2006.01)

Patent

CA 2270569

An air actuator has a rigid piston at one end and a rigid housing and end cap at the other end with an intervening elastomeric flexible sleeve extending therebetween which forms a fluid pressure chamber. The rigid piston, elastomeric flexible sleeve, and rigid housing are all injection or blow molded as one integral piece of preferably a thermoplastic elastomer, while the end cap is injection or blow molded as a second integral piece of preferably a thermoplastic elastomer that is thereafter welded to the rigid housing to define an internal chamber that is pressurizable. The first piece consisting of the piston, flexible membrane and housing, is configured such that the walls of the housing and piston are thick and rigid while the walls of the flexible membrane are thin and thus flexible, thereby allowing the membrane to roll and bend such that the piston may axially move in relation to the housing.

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