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US 4,062,181 AGranted
Combination watch-calculator construction
AssigneeHughes Aircraft Company
InventorRudolf F. Zurcher
Life of this patent
Estimating the term…
Abstract
Push button switches extending through the case wall of an electronic device, such as a combination watch-calculator engage on a three finger flat spring positioned so that one finger is in continuous electric contact and at least one finger can be pressed by the first button into engagement with an internal electrical contact point to provide manual signaling into the electronics.
Claims8
An electronic device comprising:
- a case having a side wall;
- a mounting block mounted within said case, a substrate mounted on said mounting block and electronic components mounted on said substrate, at least first and second electric contacts on said substrate lying along a line;
- a metallic spring having first, second and third fingers extending from a rib, said rib resiliently holding said fingers along a line parallel to said rib, at least one of said lines being curved, said spring being mounted between said mounting panel and said case, said spring being formed so that said second finger resiliently engages said second contact on said substrate and said first finger is resiliently urged away from said first contact on said substrate;
- and
- a manually operated actuator mounted on said case and positioned to engage said first finger and move it into said contact with said first contact on said substrate so that electrical continuity is achieved from said first contact through said spring to said second contact.
2 more elements
Dependencies are inferred from the claim text.