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US 4,072,840 AGranted
Removable keyboard switch
AssigneeLitton Business Systems, Inc.
InventorPhillip R. Daigle
Life of this patent
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Abstract
A manually actuable keyboard switch is provided having two opposite relieved openings in its base portion so that when it is inserted into an aperture in a keyboard switch retainer having two tabs outwardly extending and depending from opposite sidewalls of the aperture, the tabs spring into their original positions and within said relieved openings to hold said keyboard switch therein.
Claims5
A keyboard assembly comprising:
- a keyboard switch retainer including a first substantially flat plate having at least one aperture adapted for inserting a keyboard switch therein, said aperture having a generally rectangular configuration and having two opposite walls which are substantially flat and at least two opposite portions of said other walls having angularly depending flexible tabs;
- a keyboard switch adapted for being seated into said aperture, said switch having a housing assembly having four walls, two of said opposite walls being substantially flat and the other two walls having relieved openings therein;
- said tabs being deformed to a first position by the edges of said walls having relieved openings therein during seating of said keyboard switch thereby permitting said keyboard switch to be seated into said aperture;
- said tabs being received by said relieved openings and assuming a second position once said keyboard switch has been seated thereby retaining said keyboard switch in a seated position;
- said keyboard switch being removable through said aperture by moving said tabs away from said relieved openings thereby freeing said keyboard switch from its seated position;
- said tabs being movable away from said relieved openings by the insertion of a member through said aperture to deform said tabs to said first position.
3 more elements
Dependencies are inferred from the claim text.