Abstract: A padlock having a permutation mechanism and a key mechanism, either of which can be operated to actuate a locking mechanism to lock and unlock the padlock, wherein the key mechanism is an integral part of the locking mechanism.

Abstract: A padlock having a latching mechanism comprising a spring-biased latch bolt slidably disposed within a housing and having its free end extending outwardly from the housing to a locking position. The latch bolt has two upstanding spaced-apart shoulder portions, one shoulder portion being outside the housing positioned to engage the housing and prohibit sliding movement of the latch bolt into the housing, with the other shoulder portion being inside the housing and cooperating with the housing to maintain the one outside shoulder in its position to engage the housing. The latch bolt is pivotable about the inside shoulder portion to move the outside shoulder portion out of its position to engage the housing and thus permit the latch bolt to slide into the housing.

Abstract: A pressure-cooker comprising a pot and a lid each having flange portions for interconnection thereof through rotation of the lid relative to the pot, with locking means formed in the flanges for preventing reverse relative rotation of the lid if pressure of a predetermined value is present in the pressure-cooker. A spring actuated relief valve provided in the lid and a timer mechanism for loading the spring for a designated period of time whereby pressure of a predetermined value is maintained in the pressure-cooker during such period of time.