Pressure protection manifold
AssigneeVolvo Trucks North America, Inc.
InventorChad Kenneth Hatch
Life of this patent
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Abstract
A one piece pressure protection valve and manifold. The valve and manifold includes a housing that defines an inlet passage and a plurality of outlet passages. A valve is included in the housing. The valve is interposed between the inlet passage and the outlet passages. The valve is constructed to prevent fluid flow from the inlet passage to the outlet passages when a fluid pressure at the inlet passage is below a predetermined value.
Claims33
A one piece pressure protection valve and manifold, comprising:
- a) a housing defining an inlet passage and at least three outlet passages;
- b) a valve in said housing interposed between said inlet passage and said outlet passages, said valve being constructed to prevent fluid flow from said inlet passage to said outlet passages when a fluid pressure at said inlet passage is below a predetermined value.
A one piece pressure protection valve and manifold, comprising:
- a) a housing defining an inlet passage, a plurality of outlet passages and a vent;
- b) a valve in said housing interposed between said inlet passage and said outlet passages, said valve comprises a piston biased toward said inlet by a spring, said vent prevents a build up of pressure between said piston and an interior of said housing, said valve closes on decreasing pressure between about 62 and 72 PSIG and opens on rising inlet pressure between 75 and 95 PSIG;
- c) a push to connect cartridge fitting of a first size on said inlet;
- and
- d) push to connect cartridge fittings of a different size or different sizes on said outlets.
A system for preventing air pressure loss to vehicle air brakes, comprising:
- a) an air tank for supplying air under pressure;
- b) an inlet air tube having a first end connected to said air tank and a second end;
- c) a one piece pressure protection valve and manifold that includes:
- i) a housing defining an inlet passage connected to said second end of said inlet air tube and at least three outlet passages;
- ii) a valve in said housing interposed between said inlet passage and said outlet passages, said valve being constructed to prevent fluid flow from said inlet passage to said outlet passages when a fluid pressure at said inlet passage is below a predetermined value;
- and
- d) outlet air tubes each having a first end connected to one of said outlet passages and a second end connected to an air powered vehicle accessory.
A system for preventing air pressure loss to vehicle air brakes, comprising:
- a) an air tank for supplying air under pressure;
- b) an inlet air tube having a first end connected to said air tank and a second end;
- c) a one piece pressure protection valve and manifold, that includes:
- i) a housing defining an inlet passage connected to said second end of said inlet tube, a plurality of outlet passages and a vent;
- ii) a valve in said housing interposed between said inlet passage and said outlet passages, said valve comprises a piston biased toward said inlet by a spring, said vent prevents a build up of pressure between said piston and an interior of said housing, said valve closes on decreasing pressure between about 62 and 72 PSIG and opens on rising inlet pressure between 75 and 95 PSIG;
- iii) a push to connect cartridge fitting of a first size on said inlet;
- iv) push to connect cartridge fittings of a different size or different sizes than said first size on said outlets;
- and
- d) outlet air tubes each having a first end connected to one of said outlet passages and a second end connected to an air powered vehicle accessory.
A method of preventing air pressure loss to vehicle air brakes, comprising:
- a) connecting an inlet of a one piece pressure protection valve and manifold to a source of fluid pressure;
- b) connecting outlets of said one piece pressure protection valve and manifold to a plurality of air driven accessories;
- c) opening a passage between said inlet and said outlets when a fluid pressure applied to a valve of said one piece pressure protection valve is greater than a first predetermined value;
- and
- d) closing a passage between said inlet and said outlets when said fluid pressure is less than a second predetermined value to prevent air pressure loss to air brakes.
Dependencies are inferred from the claim text.