Fluid transfer device with quick-acting shutoff
AssigneeMarshall Excelsior Company
InventorsFrederick W. Blanchard, Alex L. Hoffman
Life of this patent
Estimating the term…
Abstract
A fluid transfer system includes a transfer device coupled to a dry break coupler. The transfer device includes a valve assembly moveable between an open and a closed position. The valve assembly includes a main valve and a pilot valve. An actuator controls both the main valve and the pilot valve. A cam plate interconnects the actuator and the valve assembly. The cam plate provides a quick acting shutoff to quickly move the valve assembly to the closed position. A pivotal and rotatable connector couples the transfer device to the dry break coupler. A lock is integrated with the actuator to lock the valve assembly in the closed position.
Claims13
A fluid transfer device comprising:
- a housing;
- a valve assembly disposed in said housing and moveable between an open position and a closed position;
- a cam plate disposed in said housing and movable linearly, said cam plate including a surface having a cam profile with first and second locations, said cam plate cooperating with said valve assembly;
- a manual actuator cooperating with said cam plate and configured to engage the surface;
- a spring biasing said cam plate into engagement with said manual actuator at said second location when said valve assembly is in said open position;
- and
- wherein said manual actuator is movable from said second location toward said first location along said cam profile to release said spring so that said spring moves said valve assembly from said open position to said closed position.
A fluid transfer device comprising:
- a housing;
- a valve assembly disposed in said housing and moveable between an open position and a closed position;
- a manual actuator operatively coupled to said valve assembly and configured to engage a surface having a cam profile with first and second locations;
- a spring biasing said surface into engagement with said manual actuator at said second location when said valve assembly is in said open position;
- wherein said manual actuator is movable from said second location toward said first location along said cam profile to release said spring so that said spring moves said valve assembly from said open position to said closed position;
- a cam plate including said surface, said cam plate interconnecting said manual actuator and said valve assembly;
- and
- wherein said housing defines guide grooves for slideably receiving said cam plate.
A fluid transfer device comprising:
- a housing;
- a valve assembly disposed in said housing and moveable between an open position and a closed position;
- a manual actuator operatively coupled to said valve assembly and configured to engage a surface having a cam profile with first and second locations;
- a spring biasing said surface into engagement with said manual actuator at said second location when said valve assembly is in said open position;
- wherein said manual actuator is movable from said second location toward said first location along said cam profile to release said spring so that said spring moves said valve assembly from said open position to said closed position;
- and
- wherein said manual actuator comprises a pin that rides along said surface from said second location toward said first location.
A fluid transfer device comprising:
- a housing;
- a valve assembly disposed in said housing and moveable between an open position and a closed position;
- a manual actuator operatively coupled to said valve assembly and configured to engage a surface having a cam profile with first and second locations;
- a spring biasing said surface into engagement with said manual actuator at said second location when said valve assembly is in said open position;
- wherein said manual actuator is movable from said second location toward said first location along said cam profile to release said spring so that said spring moves said valve assembly from said open position to said closed position;
- and
- wherein said valve assembly comprises a main valve moveable between an open-main valve position and a closed-main valve position and a pilot valve moveable between an open-pilot valve position and a closed-pilot valve position.
Dependencies are inferred from the claim text.