초록 ▼

The body member and cover member of a pressure cooker are adapted to be held together by means of inter-engageable pairs of lugs arranged on each member. One or more selected pairs of lugs are constructed so that a shoulder on a first lug or lugs can interact with either of two linearly arranged pro

The body member and cover member of a pressure cooker are adapted to be held together by means of inter-engageable pairs of lugs arranged on each member. One or more selected pairs of lugs are constructed so that a shoulder on a first lug or lugs can interact with either of two linearly arranged projections carried by a second lug or lugs. The interaction of the selected pair of lugs produces two locking positions of the body and cover. The pressure cooker preferably incorporates a further safety mechanism, such as a gasket off-set device which prevents pressurization of the vessel if there is only partial overlap of the body and cover lugs.

대표청구항 ▼

In a pressure cooker made up of a cover member and a body member removably connected by a plurality of inter-engageable pairs of lugs, one lug of each pair being formed on the cover member and the other being formed on the body member, and being brought into and out of engagement upon relative rotat

In a pressure cooker made up of a cover member and a body member removably connected by a plurality of inter-engageable pairs of lugs, one lug of each pair being formed on the cover member and the other being formed on the body member, and being brought into and out of engagement upon relative rotation of the cover member and body member, the improvement comprising: a. at least one first lug having a stepped portion forming a shoulder with one surface thereof; and b. at least one second lug inter-engageable with said first lug having first and second projections linearly arranged thereon extending toward said first lug, whereby when said first and second lugs are fully engaged and the pressure within the cooker exceeds a predetermined first value, said first projection of said second lug is in a first position which engages said shoulder of said first lug preventing relative rotation of said cover member and said body member, and furthermore whereby when the internal pressure exceeds a second predetermined pressure, said second projection on said second lug is in a second position which engages said shoulder of said first lug preventing relative rotation of said cover member and said body member.