Abstract: A security device for a double door, including a first locking portion having a curved portion and an elongated male portion, and a second locking portion having a curved portion and an elongated female portion. A lock mechanism includes a pair of rows of teeth having a gap therebetween and associated with the bottom side of the male portion and a locking prong mounted to the female portion. The locking prong has a flexible finger portion that terminates in a T-shaped end. The finger portion can slide between the gap in the rows of teeth. A release button mounted on the female portion, when pressed, causes the locking prong to bend downward, disengaging the T-shaped end from between the teeth and allowing the first and second locking portions to separate, thereby unlocking the security device.

Abstract: A security device for a double door, including a first locking portion having a curved portion and an elongated male portion, and a second locking portion having a curved portion and an elongated female portion. A lock mechanism includes a pair of rows of teeth having a gap therebetween and associated with the bottom side of the male portion and a locking prong mounted to the female portion. The locking prong has a flexible finger portion that terminates in a T-shaped end. The finger portion can slide between the gap in the rows of teeth. A release button mounted on the female portion, when pressed, causes the locking prong to bend downward, disengaging the T-shaped end from between the teeth and allowing the first and second locking portions to separate, thereby unlocking the security device.

Abstract: A duct screen mountable in an air duct for retaining objects which pass through an associated register, the screen having a filtering base having a plurality of holes and a frame to hold the filtering base in place within the air duct.

Abstract: A clamp for lockingly and releasably gripping an object, comprising a first handle having a first jaw including a first gripping section; a second handle having a second jaw including a second gripping section; a pin associated with said first handle and pivotably engaging an aperture in said second handle; and, a locking mechanism for maintaining said clamp in either in a closed position while engaging said object or an open position.