초록 ▼

A latching assembly that requires three distinct operations must be performed with two hands to allow the handle of the latch assembly to be rotated to unlock a door from a door frame. The assembly provides substantial flexibilities in installation. A base portion having a sleeve which defines an ap

A latching assembly that requires three distinct operations must be performed with two hands to allow the handle of the latch assembly to be rotated to unlock a door from a door frame. The assembly provides substantial flexibilities in installation. A base portion having a sleeve which defines an aperture is secured to a door and receives a handle portion with a shaft attached, the shaft extending through the aperture in the sleeve. Cooperative rotation restriction portions on the handle and on the base portion restrict the rotation of the handle to a limited range. The limited rotation range may be altered by selectively positioning a key guide in one of the cooperative rotation restriction portions. A first release mechanism comprising a trigger portion which extends from the handle and a detent which engages a detent opening in the base portion requires depression of the trigger portion before rotation of the handle to an unlatched position. The detent mechanism is within the handle and a cap contains and encloses in the detent mechanism. The cap portion has a bore which receives a second release mechanism which has a shaft portion which may be exteriorly manipulated to move an obstructing member into or out of an obstructing relation with the detent. Thus, the second release mechanism must be manipulated to allow release of the trigger portion which must then be depressed to allow rotation of the handle. The cap portion is secured in the handle by screws or other threaded members extending from the handle base portion interface into the cap.

대표청구항 ▼

[ I claim:] [1.] A latch assembly adapted for attachment to a door in a door frame, the latch assembly comprising:a) a base portion with a sleeve for attachment to the door, the sleeve for extending through the door, the base portion having a substantially radially extending first slot, and a first

[ I claim:] [1.] A latch assembly adapted for attachment to a door in a door frame, the latch assembly comprising:a) a base portion with a sleeve for attachment to the door, the sleeve for extending through the door, the base portion having a substantially radially extending first slot, and a first handle rotational restriction portion;b) a shaft extending through the sleeve adapted for latching to the door frame;c) a handle fixed to the shaft whereby the handle and shaft are at least partially rotatable with respect to the base portion between a first position and a second position, the handle having a head portion connecting to the shaft, a grasping portion extending from the head portion, and a cap receiving region on the head portion, the head portion configured for engagement with the base portion, the head portion including a second handle rotation restriction portion configured to cooperate with the first handle rotation restriction portion to limit the rotation of said handle and shaft with respect to the base portion, the head portion further including a substantially radially extending second slot positioned adjacent to the substantially radially extending first slot when the handle is in the first position;d) a slide member slidingly engaged with respect to the latch assembly, the slide member having a depressed position and an extended position, the slide member configured such that when in the extended position the slide member is engaged with the first slot and the second slot thereby preventing rotation of the handle and shaft, the slide member further configured such that when in the depressed position the slide member is slidingly engaged in not more than one of the first slot and the second slot such that the handle and shaft may be rotated between the first position and the second position; ande) a cap positioned in the cap receiving region, the cap having a bore extending therethrough with a rotatable shaft portion positioned in said bore, the shaft portion having an externally rotatable first end, an opposite end, and an obstructing portion connected to said opposite end and movable into and out of an obstructing position with the slide member as the rotatable shaft portion is rotated.