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Doors generally have at least one fixed handle, usually accompanied with a latch (see below). A typical "handle set" is composed of the exterior handle, escutcheon, an independent deadbolt, and the interior package (knob or lever). On some doors the latch is incorporated into a hinged handle that releases when pulled on. See also:
When a floor spring is used to control a door, they can be used in conjunction with hinges but generally have a single pivot point at the top of the door, this pivot point is known as a top centre. [33] Floor springs are usually the most expensive and most hard wearing of all the door closing devices in use.
This is an accepted version of this page This is the latest accepted revision, reviewed on 20 December 2024. Device to open or close door Various examples of door handles throughout history A door handle or doorknob is a handle used to open or close a door. Door handles can be found on all types of doors including exterior doors of residential and commercial buildings, internal doors, cupboard ...
An ornate brass door hinge A barrel hinge. A hinge is a mechanical bearing that connects two solid objects, typically allowing only a limited angle of rotation between them. Two objects connected by an ideal hinge rotate relative to each other about a fixed axis of rotation, with all other translations or rotations prevented; thus a hinge has one degree of freedom.
Full door protection uses front and rear anti-finger trapping devices and ensures the hinge side of a door is fully isolated. A risk assessment of the door determines the appropriate level of protection. There is also handle-side door protection, which prevents the door from slamming shut on the frame, which can cause injury to fingers/hands.
A hinge joint (ginglymus or ginglymoid) is a bone joint in which the articular surfaces are molded to each other in such a manner as to permit motion only in one plane. [1] According to one classification system they are said to be uniaxial (having one degree of freedom ).
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