Keyboard for the control box of an electric apparatus
AssigneeTabur Caoutchouc
InventorCharles Loheac
Life of this patent
Estimating the term…
Abstract
Keyboard for the control box (11) of an electric apparatus comprising a sheet (1) which forms a plurality of contactors (2) each projecting from the sheet through a blister (3) which is elastically deformable and which acts as a spring, the contactors (2) being provided with bearing keys (8) and contact pads (5) intended to come into contact with a printed circuit (12) arranged under the sheet (1) of contactors when a pressure is exerted on the keys. This keyboard is remarkable in that at least certain of the contactors (2) are provided with stubs (4) arranged opposite the contact pads (5) and which are intended to be force fitted into corresponding housings provided in the bearing keys (8).
Claims18
A keyboard for a control box of an electrical apparatus comprising:
- (a) a first sheet comprising:
- (i) a plurality of contactors, wherein each of said contactors comprises an elastically deformable blister projecting from said first sheet to function as a spring;
- and
- (ii) a plurality of contact pads positioned within said blisters;
- and
- (b) a second sheet comprising a plurality of keys, each having a housing therein, wherein said plurality of contact pads comprise means for contacting a printed circuit in response to a pressure applied on said plurality of keys,
- wherein at least one of said plurality of contactors comprises a stub positioned atop of said contactor opposite from said contact pads, and
- wherein said at least one stub comprises means for being force fitted into said housing of one of said plurality of keys.
Dependencies are inferred from the claim text.