An interchangeable hearing aid control panel with at least one activation zone arranged in connection with a layered structure. The layered structure has an electrically nonconducting substrate (20), an electrically conducting path (31) arranged in connection with the substrate, and an electrically conducting member (40), such as a conducting foil, arranged at a predetermined distance from the activation zone. The activation zone can be either in a deactuated or in an actuated state. In the actuated state the conducting member and the conducting path are electrically connected while disconnected in the deactuated state. Electrical connection to an associated hearing aid is by means of a connector, such as a plug, enabling the control panel to be easily changed. Preferably, the connector is formed by a piece of flexprint. The layered structure may comprise a second conducting path (32). In preferred embodiments activation zones are indicated by "poppel domes" formed by a surface layer covering the layered structure. The activation zones may form an MTO control or a volume control. To fit BTE hearing aids, the layered structure preferably has an elongated structure with a length of 1-4 cm. Other shapes can be formed to fit ITE, ITC and CIC hearing aids. In preferred embodiments, the control panel comprises one or more Silicon-based microphones protected behind a surface layer of the control panel.

The present invention relates to a multiple contact input device. An object thereof is to make it possible to use a single operation member (4) in common for the purpose of controlling a coordinate signal and setting a point thereby preventing two switches from simultaneously operating. In addition, another object is to reduce the number of elements of the multiple contact input device and thin the device. A base (11) is provided with a first switch (2) and four second switches (3) at a periphery of the first switch (2), and the operation member (4) is provided with a first pressing portion (43), second pressing members (44), and projections (45). When the operation member (4) is swung longitudinally and laterally, the second pressing portions (44) press the second switches (3). When the operation member (4) is swung diagonally, the each projection (45) touches a receiving portion of the base (11), thereby preventing the second pressing portions (44) from pressing the second switches (3). When the operation member (4) is pushed, the first pressing portion (43) presses the first switch (2).

A keytop sheet for a push-button of the invention includes a film sheet of a thermoplastic resin film, and a keytop. The film sheet is deformed at its predetermined position so as to form an upwardly curved portion. A quantity of moldable resin is filled into the inside of the upwardly portion, whereby the opposed surfaces of the curved portion of the film sheet and the moldable resin are directly and fusedly bonded together into a unitary construction, thus forming the keytop.

A computer keyboard has multiple rows of cantilevered keys which are flexibly attached to first common mounting strips. The keyboard also has multiple rows of cantilevered sub-members flexibly attached to second common mounting strips, with the sub-members being aligned beneath associated keys. The cantilevered sub-members are in sliding contact with their associated cantilevered keys and induce a tactile "break over" sensation as the associated cantilevered keys are depressed. Each sub-member is designed to actuate a switch contact as the cantilevered key is depressed, whereby the computer keyboard can be constructed without a dome sheet.

A keytop sheet of a push-button switch includes a keytop, which is made of synthetic resin, molded on a sheet of resin film. The film sheet surrounding the portion thereof on which the keytop is molded is provided with a curved projection protruding in a downward and/or upward direction from the surface of the film sheet.

In another aspect, the curved projection is replaced by providing the film sheet surrounding the portion thereof on which the keytop is molded with a cut-out while leaving a portion remaining to form a hinge portion, and a nameplate provided with a hole shaped so that the keytop may be passed therethrough is attached to the film sheet so as to cover the cut-out and hinge portion of the film sheet.

In a further aspect, a keytop sheet of a push-button switch includes a sheet of resin film in the interior of which a keytop made of synthetic resin is molded, a nameplate mounted on the film sheet and having an outer diameter greater than that of the film sheet, and a frame made of synthetic resin fixed to an underside of the film sheet on an outer peripheral portion thereof. The outer peripheral portion of the nameplate is bent and fixed to an outer peripheral side surface of the frame.

A keyboard includes plural keybar actuatros (11) each including plural keys (19, 23, 27, 31) hingedly interconnected (25, 29, 33) and a sensing device (13). The keys of a keybar actuator are all actuated by a common finger (45) in touch typing and therefore are nto jointly actuated. Depression of one key causes the keybar actuator (11) to pivot and the sensing device (13) indicates which key is depressed depending upon the amount of keybar actuator rotation. Alternate sensing devices include individual contact switches associated with each key.

An improved, low cost, high speed keyboard encoding device is provided which develops directly encoded, valid and reliable multi-bit output signals and overcomes problems associated with tolerance errors and adverse environmental and usage conditions (e.g., manufacturing errors, dust, wear). The preferred encoding device includes a plurality of juxtaposed, flexible conductive strands or wires each having a number of axially spaced impact zones along the length thereof which are either insulated or electrically conductive; corresponding zones on the separate wires are operably aligned to cooperatively define a series of spaced impact zone sets each made up of a unique pattern of conductive and insulated zones. An electrically conductive, rubber-like resilient pad having a series of ridge-like elongated members respectively aligned with corre- _spon_ding impact zone sets is also provided which is designed for impact-shifting of the members into momentary contact with the associated zone sets, whereby electrical contact is made between the ridge members and the conductive impact zones of the set. The resulting circuit making and current flow directly generates a momentary, unique, digitalized output signal without the need for conventional encoding electronic circuitry. The device is particularly suited for use in an impact-type keyboard where, upon depression of each key, an associated resilient element is shifted, released, and allowed to overtravel its rest position and momentarily strike the encoding device at a location for shifting the appropriate pad ridge into contact with the adjacent impact zone set.

L'invention concerne un dispositif électronique de transaction radiofréquence comportant un premier interrupteur apte à permettre un fonctionnement radiofréquence du dispositif sur actionnement de l'interrupteur et un arrêt de fonctionnement après relâchement de l'actionnement;

Le dispositif se distingue en ce qu'il comprend un circuit temporisateur (7, 8, 20) apte à maintenir après activation du premier interrupteur (6), un fonctionnement radiofréquence continu pendant une durée au moins égale à la durée d'une transaction à effectuer.

L'invention concerne également une carte à puce contenant le dispositif et un module pour dispositif électronique de transaction radiofréquence.

The present invention comprises fixed contacts buried in a housing, a first reversing spring made of metal, which is a movable contact accessible to the fixed contact, and a second reversing spring made of a rubber material for giving a pressing force to reverse the first reversing spring. In addition, a gap dimension for reversing the first reversing spring and the second reversing spring nearly simultaneously is provided between a top of the first reversing spring and a press section of the second reversing spring.

An interchangeable hearing aid control panel with at least one activation zone arranged in connection with a layered structure. The layered structure has an electrically nonconducting substrate (20), an electrically conducting path (31) arranged in connection with the substrate, and an electrically conducting member (40), such as a conducting foil, arranged at a predetermined distance from the activation zone. The activation zone can be either in a deactuated or in an actuated state. In the actuated state the conducting member and the conducting path are electrically connected while disconnected in the deactuated state. Electrical connection to an associated hearing aid is by means of a connector, such as a plug, enabling the control panel to be easily changed. Preferably, the connector is formed by a piece of flexprint. The layered structure may comprise a second conducting path (32). In preferred embodiments activation zones are indicated by "poppel domes" formed by a surface layer covering the layered structure. The activation zones may form an MTO control or a volume control. To fit BTE hearing aids, the layered structure preferably has an elongated structure with a length of 1-4 cm. Other shapes can be formed to fit ITE, ITC and CIC hearing aids. In preferred embodiments, the control panel comprises one or more Silicon-based microphones protected behind a surface layer of the control panel.