A lockset has a die cast, monolithic body pivotally supporting a lever handle which upon actuation and through fingers engages tabs of a lock bolt assembly for selective linear retraction of the latter. A rotatable knob carried by the body through a spindle and a guide plate mounts a cam plate which acts, upon rotation of the knob in either direction, to retract the bolt assembly. The bolt has opposed U-shaped guides which receive the guide plate and guide the bolt laterally and vertically. A lock has a lock lever which positively engages the bolt assembly to lock the latter in place. A follower lever and the lock lever are pivoted about a common axis. The follower responds to a barrel lock between two positions to lock and unlock the lock lever from the bolt assembly. The lock lever also responds to a latch pin independently of the follower on the opposite side of the lockset from the barrel lock, to lock and unlock the bolt assembly. A monolithic lock strike has lateral passages for receiving shanks of an interlock bar. Heads of the interlock bar interfere with the strike to resist forces separating the lock strike from the lockset.

An arrangement for locking and unlocking a door of a container for increasing operating reliability when locking and unlocking in a simple manner and for ensuring an opening and closing of the transport container in automated operation. Particle generation is reduced at the same time. Locking elements within a door, which can move in and out, penetrate into recesses of the container to be closed when moved out along a curved path. The arrangement is particularly applicable in transport containers for wafer-shaped objects of larger diameter, in which removal and charging are effected individually in a plane parallel to the surface of the wafer-shaped object and whose container cover is removed and inserted laterally.

An upholstered chair or sofa capable of being quickly and easily assembled and disassembled which includes first and second spaced arm members, front and back members interposed between the first and second arm members, and a seat member supported by the arm members and the front member without being attached thereto. Attachment structures are provided for connecting the first and second arm members to the back member, the attachment structures serving solely for securing the first and second arm members to the back member without supporting the seat member. In addition, in one embodiment of the invention the attachment structures also secures the first and second arm members to the front member without supporting the weight of the seat member.

A handle assembly is configured to indicate the positioning of an external handle relative to an internal handle. The handle assembly is further configured to selectively lock the internal handle when the external handle is in a selected position.

A latch secures a first member such as a door panel against a second member such as a corresponding frame. The latch comprises a housing for mounting in the first member, a pawl adapted for engaging a keeper in a latched position on the second member and latch actuating means for selectively moving the pawl into a position away from the keeper in order to allow the first member to be opened.