Disclosed is a hinge pin keeper having a hook on a first end of a shaft and a coil on a second end of the shaft. Also disclosed is an enclosure with an ambidextrous lift-off hinge, wherein said liftoff hinge connections between the door and the base permit the handedness of the door mounting to be changed without the use of tools by lifting said door in a first handedness configuration, rotating said door 180 degrees relative to said base, and mounting said door back on said hinges in a second handedness configuration, with said first handedness configuration being the opposite of said second handedness configuration.

An interchangeable pet door is disclosed. The interchangeable pet door comprises a door, a knob, a plurality of windows, a frame, and a hinge. The knob comprises a latch for securely closing the door. When the interchangeable pet door comprises a hinge, inserting the hinge into a hinge recess securely locks the door. The different elements of the interchangeable pet door are configured to be oriented in a predetermined, interchangeable, or customizable manner. The door is configured to open from, slide into, revolve within, or move in some other non-limiting equivalent way from or relative to a frame.

In one general aspect, the subject matter described in this specification can be embodied in a display case door that includes an insulated panel assembly that is transparent to visible light. The door further includes a door frame extending about and secured to a peripheral edge of the insulated panel assembly, an electronic display overlaying the insulated panel assembly, and at least one lift-off hinge including a first hinge component attached to a longitudinal side of the door frame, and a second hinge component coupled to the electronic display.

A combination door guide and protector can be used to safely and easily attach or remove vehicle doors. A set of two guides can be used for each door. Each guide can include a forward curved portion and a second curved portion that extend outwardly away from a body and form a groove. Each guide also includes a crenellated void. A body can connect the two guides and can extend away from each side of the curved portions to provide protection to the vehicle frame and body. The crenellated voids can be placed on top of weldments of hinge pin receivers located on the vehicle body frame. Hinge pin housings on the vehicle door can be slid within the groove until hinge pins on the door engage with the hinge pin receivers. The combination device makes it easier to align the hinge pins with hinge pin receivers.

A rapidly disassembled hinge suitable for use in an aircraft includes a first attachment plate attached to a supported structure, a second attachment plate attached to a supporting structure, and a pin with a notch in an outer surface thereof, which is insertable into portions of the first and second attachment plates for pivotably connecting the first and second attachment plates together. The pin is inserted so that the notch is positioned within the second attachment structure when the hinge is in an assembled state. A key includes a main body and a distal end extending from the main body, the distal end being insertable within the notch of the pin. The key is movable such that the distal end of the key can be inserted into and removed from engagement with the notch of the pin to provide for toolless disassembly of the hinge.

A safety gate has a gate body and two first locking units. The gate body has two first connecting elements. The two first locking units are respectively mounted on two opposite sides of a door frame. Each first locking unit has a second connecting element and a blocking element. When the safety gate is closed, each of the first connecting elements is connected with a respective one of the second connecting elements. Each blocking element has a blocking position for blocking a corresponding first connecting element to prevent the corresponding first connecting element from being disengaged from the second connecting element and a pressed position to allow-the corresponding first connecting element to detach from the second connecting element of the first locking unit.

A system is disclosed for converting an overhead door into a gate or serving window, the system having at least two rows of panels spanning the width of the door, one panel located above and adjacent to the other panel, a pair of rails opposite one another and adjacent to the panels, the panels traveling within the rails to move from a closed position to an open position, and at least one hinge connecting the lower row of panels to the upper row of panels, the hinge having an upper half attached to the upper row of panels and a lower half attached to the lower row of panels, the upper and lower halves of the hinge connected by a removable central pin, wherein the upper row of panels moves from the closed position to the open position when the central pin is removed from the hinge.

An apparatus for attaching and detaching hard objects allowing for rotation wherein protrusions built in or attached to one object are forced into cavity sockets built in or attached to another by causing force resulting in momentary bending of protrusions or the cavities. The sequential bending causes curvilinear motion allowing protrusions to enter otherwise inaccessible cavity sockets. Once in, the components of the joining mechanism revert to natural position and an equilibrium is reached which keeps the objects attached, yet free to move around an axis. This equilibrium can only be disturbed by causing force at specific points on the mechanism and pulling the objects apart in a curvilinear motion, thereby detaching the objects in one continuous motion with little effort. Momentary bending necessary to operate the apparatus is made possible by empty space in the casing housing the mechanism. Permitted angles of rotation are controllable and attached objects can be locked in a position.

An appliance includes a door with a plurality of panels spaced apart by a vertical support. A lower hinge mount is coupled with an appliance body. A first pivot member is coupled with the lower hinge mount and includes a first protrusion. A lower hinge support is fixedly coupled with the vertical support and includes an elongate coupling plate and a hinge arm that extends orthogonal relative to a longitudinal extent of the elongate coupling plate. A stop extends from the hinge arm. A second pivot member has a receiving space that receives the stop. The second pivot member includes a second protrusion that is in abutting contact with the first protrusion. A lower hinge pin extends through the lower hinge support and the second pivot member. The lower hinge pin is vertically translated when the second pivot member moves from a first position to a second position.

A system for removing, storing and precisely re-installing removable automobile doors. This system includes a mobile base for positioning near the vehicle and moving stored doors to their storage location. The base of this system provides mounting positions for 2 or more lifting/storing/re-installation devices, accommodating full service (removal, storage and re-installation) of up to 4 doors at once. The lifting/storage/re-installation devices contain full 3 axis precise adjustment and rigid coupling to each of the vehicle's doors. Without this precision, the weight and non-balance of removing/re-installing the doors can cause the door to tilt into or away from the vehicle, possibly crushing a human body part (finger, hand) and/or damaging the vehicle or door. By rigidly coupling the door to the precisely adjusted device, precise vertical lifting and lowering may be used to remove and re-install the doors, including accommodating surface variations encountered from removal to re-installation time.