F - Mech Eng,Light,Heat,Weapons – 15 – B
Patent
F - Mech Eng,Light,Heat,Weapons
15
B
F15B 15/10 (2006.01) B60T 15/42 (2006.01) F15B 13/04 (2006.01)
Patent
CA 2290513
A diaphragm piston having a diaphragm (52) between a body (50) and plate (56). A post (80) integral with and extends from the body through the diaphragm and the plate. A stop (66) is coupled to the post and limits the axial movement of the plate away from the body. A spring seat (78) is coupled to the post. A spring (76) is between the plate and the spring seat. The post includes a first shoulder (94) and the stop engages the first shoulder. The stop includes an orifice (68) shaped to move axially on the post past the first shoulder and rotate about the post and engage the first shoulder. The first shoulder has at least one circumferential recess (86) and the orifice in the stop includes a radial tab (70) smaller than the recess. A first lock (74) prevents rotation between the stop and the post. A second lock (62) is also provided preventing rotation between the plate and post. A unique stem (95) which guides the diaphragm piston in a valve seat is provided.
Borden Ladner Gervais Llp
New York Air Brake Corporation
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