Patent ID: 11906063
Assignee: HAMILTON SUNDSTRAND CORPORATION
Field: Mechanical elements (Mechanical engineering)
Classification: CPC B  F  G | IPC F

Claim 8:
9. An aircraft comprising:
a fuselage;
at least one engine supported by the fuselage;
a mechanical system arranged in the fuselage, the mechanical system including a pressure actuated switching valve comprising:
a valve chamber, wherein the valve chamber includes
a first chamber portion defining an inlet, the first chamber portion having a first inner diameter;
a second chamber portion defining an outlet, the second chamber portion having a second inner diameter that is greater than the first inner diameter;
a first sealing surface defined between the first chamber portion and the second chamber portion,
a third chamber portion having a third inner diameter that is greater than the first inner diameter,
a fourth chamber portion having a fourth inner diameter that is greater than first inner diameter, and
a fifth chamber portion;
a second sealing surface defined at an interface of the first chamber portion and the second chamber portion; and
a valve member slidingly arranged in the valve chamber, wherein the valve member includes
a first section arranged in the second chamber portion, the first section having a first outer diameter that is greater than the first inner diameter and being configured to selectively engage the sealing surface,
a second section arranged in the third chamber portion, the second section having a second outer diameter that is closely matched to the third inner diameter, and
a third section arranged in the fourth chamber portion having a third outer diameter that is greater than the first outer diameter, the second outer diameter, and the second inner diameter.