An oven appliance includes a cabinet that defines a chamber. A pair of doors is rotatably mounted to provide selective access to the chamber of the cabinet. The pair of doors is connected with a linkage assembly such that the doors rotate open and closed simultaneously. The linkage assembly includes a spur gear that engages another gear of the linkage assembly. The spur gear can hinder unwanted rotation of the pair of doors or compress the pair of doors against a seal.

An oven appliance includes a cabinet that defines a chamber. A pair of doors is rotatably mounted to provide selective access to the chamber of the cabinet. The pair of doors is connected with a linkage assembly such that the doors rotate open and closed simultaneously. The linkage assembly includes a spur gear that engages another gear of the linkage assembly. The spur gear can hinder unwanted rotation of the pair of doors or compress the pair of doors against a seal.

A portal apparatus for securely controlling passage is described. The apparatus uses a passageway which includes at least two moveable door panels that operate in conjunction with at least two sidewalls including at least one linear sidewall. The apparatus includes position sensors for tracking a position of a subject passing through the passageway and determining a rate of movement of the subject. While the subject is walking through the passageway, each door panels is controlled to move at the determined rate of movement of the subject.

An oven appliance includes a cabinet that defines a chamber. A pair of doors is rotatably mounted to provide selective access to the chamber of the cabinet. The pair of doors is connected with a linkage assembly such that the doors rotate open and closed simultaneously. The linkage assembly includes a spur gear that engages another gear of the linkage assembly. The spur gear can hinder unwanted rotation of the pair of doors or compress the pair of doors against a seal.

A display has at least one pair of revolving door panels hinged to a box frame by means of hinging means actuated by actuation means intended to permit the synchronous movement of the door panels of the pair of door panels.

A door synchronizing assembly is provided having two doors for closing an opening to an enclosure, such as an oven cavity. Each door has a hinged outer edge at which the corresponding door pivots relative to the housing of the enclosure and a fixation point. A central linkage is provided adjacent a surface of the housing of the enclosure. The central linkage translates substantially in a direction perpendicular to a plane of the opening of the enclosure. As such, the central linkage translates towards and away from the door opening. First and second rigid elongated elements are provided, each of which link the central linkage with the fixation point of a corresponding door of the two doors. Movement of one of the two doors causes a translation of the central linkage which in turn generates a corresponding movement of the second of the two doors.

A domestic cooling appliance has a housing and at least one receiving space for receiving food and first and second doors for closing the receiving space in the front. A first door is pivotally arranged at the housing a second door is pivotally arranged at the housing. The two doors are adjacent one another for closing the at least one receiving space at the front. The two doors are coupled to each other by a moving device, by which, upon operation of one of the two doors, automatically a concurrent movement of equal type of the other door is achieved.

An automatic built-in closing apparatus includes at least one common pivoting shaft that is driven by a unique motor, intermediate gear wheels and a clutch coupled to control doors of a series of lockable compartments pertaining to a same block of an electronic locker unit and a set of freewheels and overload clutch which is mounted on the common pivoting shaft as a hinge for each door of the series of lockable compartments.

Electro-mechanical and electronically controlled access devices are described for controlling access to a building, premises or area in a secure manner such that a subject who is deemed ineligible for access will be barred entry. The devices contain multiple rotatable and moveable door panels. The door panels can be controlled by various drive mechanisms in order to control the passage through the device. The direction of flow through a device according to these embodiments is electronically controlled and may be changed at any point in time. At any instant in time, the flow through the device is unidirectional. Multiple devices can be stacked together to form clusters, which can be controlled according to traffic, time of day, or other factors.

An oven appliance includes a cabinet that defines a chamber. A pair of doors is rotatably mounted to provide selective access to the chamber of the cabinet. The pair of doors is connected with a linkage assembly such that the doors rotate open and closed simultaneously. The linkage assembly includes a spur gear that engages another gear of the linkage assembly. The spur gear can hinder unwanted rotation of the pair of doors or compress the pair of doors against a seal.