Fluid actuator including composite cylinder assembly

In a fluid actuator, a cylinder including a chamber for receiving a piston-rod assembly, said chamber having end wall members at opposite ends thereof, a liner member defining the inner wall of said chamber, said liner member being surrounded by circumferential hoop stress windings which prevent diametrical expansion of said liner member, and longitudinal tension windings extending over substantially the entire length of said cylinder, said cylinder including a support structure mount at one end, said longitudinal tension windings extending around said support structure mount intermediate the ends of said longitudinal tension windings, and securing means for securing the opposite ends of said longitudinal tension windings to said cylinder at the other end thereof.

In a fluid actuator, a cylinder including a chamber for receiving a piston-rod assembly, longitudinal tension windings extending around one end of said cylinder from one side to the other, securing means for securing the opposite ends of said longitudinal tension windings to said cylinder at the other end thereof, said cylinder including a support structure mount at said one end, said longitudinal tension windings extending around said support structure mount intermediate the ends of said longitudinal tension windings.

In a fluid actuator, a cylinder including a chamber for receiving a piston-rod assembly, said chamber having end wall members at opposite ends thereof and a composite fiber wall structure, liner means providing a fluid barrier on the inner surface of said composite fiber wall structure, said composite fiber wall structure including circumferential hoop stress windings extending circumferentially around said chamber over the length thereof, said hoop stress windings and liner means axially overlapping the adjacent end of one of said end wall members, said one end wall member having a ring portion extending radially outwardly beyond said liner means and hoop stress windings, longitudinal tension windings extending axially beyond opposite ends of said chamber and over said ring portion, filler means for filling of voids between said hoop stress windings and longitudinal tension windings adjacent said ring portion, and securing means for securing said longitudinal tension windings to said ring portion.

In a fluid actuator, a cylinder including a chamber for receiving a piston-rod assembly, said chamber having end wall members at opposite ends thereof and a composite fiber wall structure extending between said end wall members, said composite fiber wall structure including circumferential hoop stress windings extending substantially the full length of said chamber, said hoop stress windings overlapping one of said end wall members, said one end wall member having a ring portion extending radially outwardly therefrom beyond said circumferential hoop stress windings, longitudinal tension windings extending beyond the opposite ends of said chamber and over said ring portion, and filler means for filling of voids between said circumferential hoop stress windings and longitudinal tension windings adjacent said ring portion.