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

Claim 0:
1. 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 the inner diameter, and
a fifth chamber portion;
a second sealing surface defined at an interface of the fourth chamber portion and the fifth 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, the third section having a third outer diameter that is greater than the first outer diameter, the second outer diameter, and the second inner diameter, and being configured to selectively engage the sealing surface.