초록 ▼

A pressure regulator including high and low pressure chambers separated by a divider having an opening, a closing member biassed to a closing position for closing the opening with a biassing force according to a desired pressure differential between the chambers, and a damping device for damping the

A pressure regulator including high and low pressure chambers separated by a divider having an opening, a closing member biassed to a closing position for closing the opening with a biassing force according to a desired pressure differential between the chambers, and a damping device for damping the resulting force on the closing member. There is also disclosed a fluid drainage system having a suction chamber with a suction regulator, and various arrangements of diaphragms for measuring pressure differentials. An anti-spill device for the draining system is disclosed as well.

대표청구항 ▼

Apparatus for regulating the pressure of a gas in a control space in communication with a first space of variable sub-atmospheric pressure and with a second space of subatmospheric pressure to control the flow of gas from the first space to the second space, said apparatus comprising: a first compar

Apparatus for regulating the pressure of a gas in a control space in communication with a first space of variable sub-atmospheric pressure and with a second space of subatmospheric pressure to control the flow of gas from the first space to the second space, said apparatus comprising: a first compartment in communication with the atmosphere; a second compartment at the pressure of the control space, said second compartment providing a continuous path for any flow of gas from the first space to the second space; dividing means dividing said first compartment and said second compartment, and including an opening for rendering said first compartment in communication with said second compartment; closing means movable between an opening position for opening said opening and a closing position for closing said opening, a differential in the pressures between said first compartment and said control space in one sense biasing said closing means towards the opening position and a differential in the pressures between said first compartment and said control space in the opposite sense biasing said closing means towards the closing position; biasing means for biasing said closing means towards the closing position with a force which establishes a force equilibrium across said closing means to open said opening by an amount to admit sufficient air at atmospheric pressure necessary to establish a pressure in said control space to effect a desired flow of gas from first space to the second space, said closing means continuously opening and closing said opening to effect the admission of said sufficient amount of air; and damping means operatively connected to said closing means for damping the resultant force applied to said closing means in at least one direction.