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US 2013/0340862 A1Published application
High opening velocity check valve
AssigneeHamilton Sundstrand Corporation
InventorsJoshua A. Kamp, George L. Kan
Life of this patent
Estimating the term…
Abstract
A check valve housing is provided and includes a base having opposite sides which are configured to form linear contact surfaces with check valve flappers pivotably disposed on either side of the base, respectively, and an additional structural member having opposite sides which are configured to form additional contact surfaces with each of the check valve flappers, respectively.
Claims20
A check valve housing, comprising:
- a base having opposite sides which are configured to form linear contact surfaces with check valve flappers pivotably disposed on either side of the base, respectively;
- and
- an additional structural member having opposite sides which are configured to form additional contact surfaces with each of the check valve flappers, respectively.
A check valve, comprising:
- a body including a seat, a hinge bifurcating the seat to define openings and a housing coupled to the hinge;
- and
- flappers pivotably coupled to the hinge to pivot in response to a pressure differential across the seat from respective closed positions at which the first and second flappers prevent fluid flow through the openings to respective open positions at which fluid flow through the openings is permitted,
- opposite sides of the housing forming linear and additional contact surfaces with each of the flappers, respectively, with the flappers occupying the respective open positions.
1 more element
A check valve interposed between upstream ductwork and downstream ductwork, comprising:
- a body including a seat interposed between complementary ends of the upstream and downstream ductwork, a hinge bifurcating the seat to define openings and a housing coupled to the hinge;
- and
- flappers pivotably coupled to the hinge to pivot in response to a pressure differential between the upstream and downstream ductwork from respective closed positions at which the first and second flappers prevent fluid flow through the openings to respective open positions at which fluid flow through the openings is permitted,
- opposite sides of the housing forming linear and additional contact surfaces with each of the flappers, respectively, with the flappers occupying the respective open positions.
1 more element
Dependencies are inferred from the claim text.