Clip retainer

Claim 1

In a servomotor having a housing divided by wall means into a control chamber and a power chamber and operated by a control valve which allows fluid pressure into the control chamber to create a pressure differential between the control chamber and the power chamber causing the wall means to move and transmit a force to an output rod, the wall means including a flexible diaphragm, means for connecting the wall means to the output rod and for holding the control valve in an operative position, said means comprising: hub means having a stepped internal bore, said internal bore being connected to said control chamber and power chamber by passages through which said fluid under pressure flows, said hub means having a radially extending external flange extending along the inner diameter of said flexible diaphragm, said output rod being retained against a reaction member which abuts a shoulder of a land in said internal bore, said hub means having a slot adjacent said land extending to the periphery of said hub; keeper means attached to the control valve, said keeper means being located to slide in an axial direction through the width of said land to position said valve means within said internal bore; and clip means located in said slot having a central portion which extends into said internal bore to surround said control valve for limiting the extent of axial movement of said keeper means to substantially the width of the land within said internal bore, said central portion having an arcuate projection extending past the periphery of said hub means at said slot, said clip means having a pair of arms secured to said arcuate projection, each of said arms having a portion which snaps into a groove in said hub means to lock said clip means in a fixed position to retain said flexible diaphragm against said external flange, said external flange transferring the force created by said pressure differential through the hub means to said output rod.