Abstract: A pressure-release latch for releasably locking closed a door panel on the frame to which the door panel is hingedly connected. The latch has a base and a latch bolt rotatable between a closed position that locks the door panel closed and an open position that allows the door to swing open. A latch bolt actuator connected to the latch bolt rotates the latch bolt between the closed and open positions from outside the door panel, locks the latch bolt in the closed position, and automatically unlocks and moves the latch bolt to the open position when a predetermined opening force is applied to the latch bolt. A calibration mechanism adjusts the magnitude of the predetermined opening force required to automatically unlock the latch.

Abstract: A latch is operable between a disengaged position and an engaged position releasably connecting a latch mounting pin on a first static structural element to a keeper on a second, movable structural element. The latch includes means for adjusting the throw of the hook to accommodate different distances between the latch mounting pin and the keeper due to manufacturing tolerances or different applications. The latch has a tension mechanism, a hook connected to the tension mechanism, and a handle pivotably connected to the tension mechanism and operable to actuate the tension mechanism between engaged and disengaged positions with the keeper. The latch is operable between the engaged and disengaged positions by rotating the handle between a closed position and an open position.

Abstract: A latch with a unique nesting toggle linkage that extends and retracts a hook via movement of an actuation handle. The linkage links have U-shaped lateral cross sections with a central channel into which the respective links nest when the latch is closed to minimize the overall volume of the latch. The links fold toward each other while closing to reduce the latch's overall length when fully closed. The components of the latch are arranged so that the center of gravity of the latch is positioned in front of a mounting pin; therefore, in applications where the latch swings in the vertical plane, the hook will necessarily hang downwardly away from the keeper when the latch is open. Optionally, a keeper detector prevents the actuation handle from closing if the keeper has not been first captured in the mouth of the hook. A rod-and-cylinder slide mechanism may be employed between the hook body and the mounting pin.

Abstract: A channel latch having a lock for holding the latch bolt closed which includes a secondary locking feature that prevents the lock from being turned. The lock mechanism has a tumbler barrel with a central reciprocal plunger that has a key portion which outwardly projects through the barrel into a keyway in the bolt. The plunger is depressed downward against a spring when a tool is inserted into the tumbler to turn it. The keyway includes longitudinal grooves and a pathway that restrict the upward release of the plunger only when the tumbler is turned to either the locked or unlocked position. Once the plunger is released the key and groove abutment prevents the lock from being turned.

Abstract: A system evaluates occurrences of low level electrostatic discharge events in a manufacturing or processing environment or the like by encapsulating each of a plurality of a MOSFETs in a corresponding package having conductive first and second groups of leads coupled to the gate and source and/or drain electrodes of the MOSFET, respectively. The encapsulated MOSFET then is moved through the environment, wherein an electrostatic discharge causes current to flow into the first external electrode, stressing the gate oxide of the MOSFET and producing a permanent low resistance condition therein. The encapsulated MOSFET then is removed from the environment and tested by measuring an electrical parameter indicative of the low resistance condition between the first and second electrodes of the MOSFET. A statistical analysis then is performed on the data obtained by testing all of the MOSFETs to determine how to reduce or avoid ESD in the environment.