Editing Acer switch (section)

==Internals==
Acer switches are a hybrid of [[Alps SKCL/SKCM series]] and membrane [[rubber dome]] keyboards. The rubber dome is replaced with an Alps mechanism, and the switch is open at the bottom to allow a hinged plastic part to press on the membrane. The tactile feel and audible click are provided by a [[click leaf|folded leaf spring]] identical to Alps switches. Unlike with Alps switches, the leaf spring cannot be directly removed, as a small plastic lug on the [[slider]] keeps the spring in place.

The switch uppers are discrete, and are [[switch mount|mounted]] either into a plastic plate, or directly into the case itself.

US patent 4939327 represents the switch commonly found; the [http://www.google.com/patents/US4990731 US patent 4990731] filed in 1989 depicts a variant design with leaf spring mounted upside down and attached to the slider, although this variant has yet to be encountered.