| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 1 | Keyboard switch assembly having raised contacts supported by helicline legs on a common conductive sheet | US508482 | 1974-09-23 | US3979568A | 1976-09-07 | Wendell C. Johnson |
| A switching device having a movable contact that is an integral part of a metallic support substrate and is supported above the support substrate by a plurality of spring-like support legs that are also an integral part of the support substrate. The support legs extend radially outward from the movable contact and contact the substrate and the movable contact at equally spaced points. The movable contact is aligned with either a stationary contact or another movable contact and a stationary contact to provide either single or multiple switching. The switching device can be used for contact switching or capacitive switching. A plurality of the switching devices can be formed on the support substrate making the switching device particularly well suited for use in a keyboard. A portion of each support leg may be thinned to provide a negative force-displacement characteristic which provides a good tactile feedback signal indicating switching.One or more of the switching devices are produced by forming one or more groups of curved, unconnected, radially extending slots in a metallic substrate, deforming the legs defined by the slots past their elastic limit, and then, if desired, precipitation hardening the completed structure. To assure movement of the central area of the movable contact past the plane of the support substrate, a portion of each of the legs is thinned prior to the legs being plastically deformed. | ||||||
| 2 | Keyboard switch assembly having movable contact, and supporting helicline type legs disposed co-planar to common conductive sheet | US508480 | 1974-09-23 | US3968336A | 1976-07-06 | Wendell C. Johnson |
| A switching device having a movable contact element characterized by a set of unconnected, curved slots radiating outward from a central key area and equally spaced around the central key area. The radially extending unconnected, curved slots may be sections of a spiral, at least some of which sections overlap each other. Adjustment of the spring rate of the movable contact element is accomplished by adjusting the length of the slots or by regulating the distance of the inner terminus of the slots from a central point of the central key area. The movable contact element either contacts a second contact element for contact switching or approaches the second contact element for capacitive switching.A plurality of the switching elements can be formed in a planar array on a continuous metallic substrate to provide a keyboard. The movable switching elements can be formed on the metallized areas of a printed circuit board. | ||||||
| 3 | Sequential switching assembly having plural, spaced flexible contact layers | US508477 | 1974-09-23 | US3969595A | 1976-07-13 | Wendell C. Johnson |
| A multiple switching apparatus comprising two spring-like switching members disposed in a tandem array with each integral with its metallic support base. The central area of each of the switching members is defined by a plurality of slots formed in the support base with the length and displacement of the slots defining the force-displacement characteristics of each switching member and, accordingly, of the tandem array. The top switching member moves downward until it produces a first switching function, with further movement of the top switching member effecting movement of the second switching member such that a second switching function is produced. | ||||||
| 4 | Method of forming a deformed, integral switching device | US508486 | 1974-09-23 | US3950846A | 1976-04-20 | Wendell C. Johnson |
| A method of forming a switching device having a movable contact that is an integral part of a metallic support substrate and is supported above the support substrate by a plurality of spring-like legs that are also an integral part of the support substrate. One or more of the switching devices is produced by forming one or more groups of curved, unconnected radially extending slots in a metallic substrate to define support legs, plastically deforming the legs defined by the slots past their elastic limit, and then precipitation hardening the complete structure. The slots can be formed by a photomasking technique followed by an acid etch with the etch being performed from both sides of the metallic support substrate. To provide a desired tactile response characteristic, and to assure movement of a central portion of the switching device past the plane of the metallic support substrate, a portion of each of the legs defined by the slots may be removed to thin that portion of each leg. The plastic deformation may be performed in a male-female die mechanism. | ||||||
| 5 | Keyboard device for inputting data to electric device | JP747078 | 1978-01-27 | JPS53111484A | 1978-09-29 | RUNE KUREMACHIDO |
| It exhibits a carrier plate (1) with stationary countercontacts (3) which are connected to connecting points (4) by means of lines (2). The countercontacts consist of electrically conductive rubber and are rough on the top. A holding plate (5) of insulating material is located on the carrier plate (1). Above the holding plate (5), a contact plate (7) of metal is arranged which exhibits a number of spherical segment-shaped domes (8) with spiral incisions (9), in order to avoid having to assemble a multiplicity of individual contact disks. The number and arrangement of the domes corresponds to the number and arrangement of the countercontacts (3). Pressing on a push-button (11) of the rubber cover (10) elastically deforms a dome (8) of the contact plate (7) and brings it into contact with the counter-contacts (3) which produces an electric connection between countercontact (3) and contact plate (7). The device is accommodated in an open housing (13) which exhibits penetrations (14) through which the push-buttons (11) protrude. The housing (13) is mounted on an electronic device. |
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| 6 | Kaiheikisochi oyobi sonoseizohoho | JP11465875 | 1975-09-22 | JPS5160967A | 1976-05-27 | UENDERU SHII JONSON |
| A multiple switching apparatus comprising two spring-like switching members disposed in a tandem array with each integral with its metallic support base. The central area of each of the switching members is defined by a plurality of slots formed in the support base with the length and displacement of the slots defining the force-displacement characteristics of each switching member and, accordingly, of the tandem array. The top switching member moves downward until it produces a first switching function, with further movement of the top switching member effecting movement of the second switching member such that a second switching function is produced. | ||||||
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