초록 ▼

A simple to operate locking mechanism for a pressure cooker, the locking mechanism having a locking arm rotatable from a fully open to a fully locked position, the locking arm being operatively connected to a cam shaft assembly which is rotatable with the locking arm, the cam shaft assembly being sl

A simple to operate locking mechanism for a pressure cooker, the locking mechanism having a locking arm rotatable from a fully open to a fully locked position, the locking arm being operatively connected to a cam shaft assembly which is rotatable with the locking arm, the cam shaft assembly being slidably axially in a cam shaft sleeve rotatably mounted in a displacement member which causes the cam shaft assembly to be axially displaced as it is rotated by the locking arm, the cam shaft assembly being moveable from a retracted to an extended position as the locking arm moves from a fully open to an intermediate position. A safety mechanism is provided to prevent rotation of the locking arm from the intermediate to the fully locked position in the event the cam shaft assembly is not fully extended. A pressure responsive safety mechanism is also provided to prevent opening movement of the locking mechanism in the event the cooker is under pressure.

대표청구항 ▼

In a pressure cooker having a receptacle with an open end, and a lid hingedly connected to the receptacle for movement from an open position to a closed position, the improvement comprising a locking mechanism adapted to be mounted on the lid and a locking bar adapted to be mounted on the receptacle

In a pressure cooker having a receptacle with an open end, and a lid hingedly connected to the receptacle for movement from an open position to a closed position, the improvement comprising a locking mechanism adapted to be mounted on the lid and a locking bar adapted to be mounted on the receptacle at the open end thereof for engagement by said locking mechanism, said locking mechanism comprising an elongated locking arm rotatable from a fully open position to a fully closed position, a cam shaft operatively connected to said locking arm for rotation therewith, a locking cam mounted on one end of said cam shaft, and displacement means operative to displace said cam shaft axially from a retracted position to an extended position as said locking arm is rotated from its fully open position to an intermediate position, whereby to position said locking cam for engagement with said locking bar, continued rotation of said locking arm toward the fully locked position causing said locking cam to engage said locking bar, said locking cam being configured to cause the lid to be drawn into sealing engagement with the open end of the receptacle as the locking arm is moved from the intermediate position to the fully closed position. A locking mechanism movable between a fully open position and a fully closed position, said locking means comprising: a displacement member, a bearing sleeve rotatably journaled in said displacement member, a cam shaft slidably journaled in said bearing sleeve, a locking cam on said cam shaft, operating means interconnecting said cam shaft and said bearing sleeve for joint rotation, said operating means engaging said displacement member, said displacement means acting through said operating means to axially displace said cam shaft upon rotation of said bearing sleeve, and a locking arm connected to said bearing sleeve for rotating said sleeve, whereby said locking cam is moved from the fully open position to the fully closed position upon rotation of said locking arm.