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Keyboard for the remote control of machine tools and the like
| Details |
Inventors: Savazzi, Ezio;
Assignee: Fidia S.p.A (San Mauro Torinese, IT)
Primary Examiner: Coles, Sr.; Edward L.
Assistant Examiner: Lee; Fan
Attorney, Agent or Firm: Sughrue, Mion, Zinn, Macpeak & Seas
The keyboard comprises a plurality of keys and/or manual controls connected to one or more boards which can generate coded electrical signals indicative of the commands put into effect by the operation of the keys and/or the manual controls. The keys and/or controls are divided into at least two sets disposed on at least two faces of a body which can rotate in a tubular casing having a display window. The faces can be positioned in the display window in turn as a result of the rotation of the rotary body. |
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DETAILED DESCRIPTION What is claimed is: 1.
A keyboard assembly, particularly but not exclusively for the remote control of machine tools, said assembly comprising a tubular casing with a display window therein, a body with at least two faces, said body being rotatable within said casing such that said faces are positionable in said display window as a result of the rotation of said body, at least two sets of keys and/or controls disposed on said at least two faces, respectively, and at least one board connected to said keys and/or controls, said at least one board being able to generate coded electrical signals indicative of commands put into effect by the operation of the keys and/or controls.
2.
A keyboard assembly according to claim 1, further comprising resilient means for biassing said rotary body towards at least two stable equilibrium positions in each of which one of said at least two faces is in said display window.
3.
A keyboard assembly according to claim 2, wherein said rotary body has an axial appendage which is fixed to said rotary body, parallel to and spaced from the axis of rotation of said body, said casing has a stop surface for abutment by said appendage at two points situated on opposite sides of the axis of rotation of said body, and said tubular casing comprises an anchoring element which is fixed thereto, said resilient means comprising a tension spring having a first end anchored to said axial appendage and a second end anchored to said anchoring element, said spring being able to restrain said appendage resiliently against said stop surface in the two positions in which said rotary body is in stable equilibrium.
4.
A keyboard assembly according to claim 3, furthermore comprising a hand-operable rotary entrainment member which cooperates with said axial appendage and which can move said appendage from a first of its points of contact with said stop surface, causing said tension spring to extend, to a point in which said appendage is biased by said spring towards its second point of contact with said stop surface
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