Patent ID: 6722262
Filing Date: 2004-04-20
Classification: F15B

Abstract:
A pneumatic actuator assembly comprising:a housing with an internal chamber and at least a first fluid port in fluid communication with the internal chamber; a diaphragm assembly located in the internal chamber of the housing to prevent fluid communication between a first portion of the internal chamber and a second portion of the internal chamber, the first portion of the internal chamber being in fluid communication with the fluid port; wherein the diaphragm assembly has a first diaphragm having an outer surface and an inner surface, and a second diaphragm having an outer surface and an inner surface, the second diaphragm outer surface positioned adjacent the first diaphragm inner surface; and wherein each of the first and second diaphragms has a fabric portion and has at least a portion of one of its surfaces covered with an elastomeric material, each fabric portion having at least one fabric pattern, and wherein the fabric patterns of the first and second diaphragms are substantially aligned with one another.