Abstract: A multiple section keyboard includes a universal support for each section permitting unrestricted orientation of each section. A vertical adjustable support includes a telescoping cylinder unit or a three point linkage support. A ball unit connects the vertical support to a slide unit for lateral placement. The ball unit provides rotational and pivotal positioning. A lock unit is coupled to the ball unit and simultaneously looks the ball unit, the linkage unit and the slide unit in place. A separable ball connector may also connect the top inner corners of two keyboards to maintain a V-shaped board configuration. Each section has a separate extendible spacer bar formed with a telescoping portion adapted to be extended outwardly and latched in place between angularly related and spaced keyboard sections. A separate number 6 key unit is provided for coupling to either section for inputting of the digit from that section.

Abstract: An improved switch assembly is disclosed having particular application as part of a key in a computer keyboard. The switch includes first and second pairs of spaced apart electrical contacts, the first pair extending above the second. A conductive and resilient diaphragm is disposed over both pairs of contacts physically contacting only the first. A deformable generally bell shaped actuator member is disposed over the diaphragm, the walls of the actuator member being tapered in thickness so as to buckle upon the application of a known vertical force. Actuator means are provided to deform the actuator member in response to the activation of the switch by a user, thereby forcing the diaphragm to physically contact the second electrical contact completing a circuit.

Abstract: A resilient metallic actuator and contact, for use with keyboard switches, designed to provide a specific tactile effect to the keyboard operator. The preferred actuator is a double member actuator. The first member provides a resting spring bias to the key. The second member provides a significant increase in the spring bias force slightly prior to the switch making contact. In one embodiment the actuator activates a dome like over center contact to close the switch. In an alternate embodiment the second actuator member is configured to perform the function of a contact member.