초록 ▼

A single handle-actuated lid opening, closing, and locking mechanism for a large capacity pressure cooker having an open-top cooking vat and a counter-balanced lid shiftable vertically between a vat open and a vat closed position. The mechanism comprises a pair of slotted hook arms mounted to either

A single handle-actuated lid opening, closing, and locking mechanism for a large capacity pressure cooker having an open-top cooking vat and a counter-balanced lid shiftable vertically between a vat open and a vat closed position. The mechanism comprises a pair of slotted hook arms mounted to either side of the vat. A cam bar extends transversely of the vat lid and is provided with a forwardly extending arm near each of its ends. The forward ends of the arms are joined by a bar constituting a handle in parallel spaced relationship to the cam bar. The ends of the cam bar support rollers receivable within the slots of the hook arms. The cam bar is manually shiftable by the handle between a forward lid locking position and a rearward unlocking and lid engaging position. In its forward lid-locking position, the cam bar assumes an over-center orientation with its rollers bearing upwardly against the upper surfaces of the hook arm slots and the cam bar body bearing downwardly against the lid. In its rearward unlocked and lid engaging position, the cam bar is rigidly coupled to the lid so that upward and downward forces applied to the handle result in vertical upward and downward movement of the lid between its vat open and its vat closed positions. A cam bar lock precludes unlocking and opening of the lid when the vat is pressurized.

대표청구항 ▼

A lid opening, closing and locking mechanism for a pressure cooker having a vat with an open top, a lid for said vat, and means mounting said lid for vertical movement relative to said vat top between an open position elevated with respect to said vat top and a closed position seated on said vat top

A lid opening, closing and locking mechanism for a pressure cooker having a vat with an open top, a lid for said vat, and means mounting said lid for vertical movement relative to said vat top between an open position elevated with respect to said vat top and a closed position seated on said vat top, said lid having a planar top and downwardly depending forward and rearward ends and longitudinal sides, said forward and rearward ends and sides supporting a gasket adapted to form a seal with said open vat top, said mechanism comprising a pair of slotted hook arms mounted on said cooker to either side of said vat top and a cam bar in association with said lid and extending transversely thereof, said cam bar having a main body portion and end portions which extend beyond said sides of said lid, handle means operatively connected to said cam bar, said cam bar being manually shiftable by said handle means longitudinally of said lid between a forward lid locking position wherein said main body portion bears downwardly against said lid and said cam bar ends bear upwardly against the slots of said hook arms, and a rearward unlocking and lid engaging position wherein said cam bar ends are free of said hook arm slots and said cam bar is mechanically coupled to said lid so that upward and downward forces on said handle will shift said lid between its open and closed positions.