Push button switch by Katsuyuki Matsuo
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| Product | Alps SKFF series |
|---|---|
| Country | US |
| Patent number | 4186290 |
| Inventor | Katsuyuki Matsuo |
| Assignee | Alps Electric Co., Ltd. |
| Reference | US4186290 |
Push button switch is an inverted leaf spring which is housed in a frame opposite from variable power contact mechanisms that have a plurality of fixed terminals supported by a switch block. Among its main features, was the stroke improvement of the keytops, a revised frame, and the adaptation of these contact mechanisms to operate under different magnitudes of power. The patent number 4186290 for the invention was granted in 1980. [1]
Description
Push button switch
- Inventor: Katsuyuki Matsuo
- Application number: 973442
- Patent number: 4186290
- Filing date: 26 December 1978
- Issue date: 29 January 1980
Cited patents
- US 2301874, "Clickek plunger switch", issued Nov 10, 1942
- US 2420880, "Snap switch", issued May 20, 1947
- US 2524411, "Electric snap switch", issued Oct 3, 1950
- US 2583756, "Snap switch", issued Jan 29, 1952
- US 3708635, "Multiple switch assembly with improved reciprocating leaf spring contact cam actuator", issued 1973
- US 3787653, "Electrical switch assembly", issued Jan 2, 1974
- US 3965320, "Push button switch", issued Jun 22, 1976, assigned to Molex Incorporated
- US 4129764, "Push switch", issued Dec 12, 1978 Alps Electric Co., Ltd.
Referenced by
- US 4398070, "Two-motion push-button switch", issued Aug 9, 1983, assigned to Alps Electric Co., Ltd.
- US 4426559, "Push button switch having two resilient contacts operated at different times", issued Jan 17, 1984, assigned to Alps Electric Co., Ltd.
- US 4447687, "Pushbutton switch", issued May 8, 1984, assigned to Marquardt GmbH
- US 4642433, "Pushbutton switch with aural confirmation of operation", issued Feb 10, 1987, assigned to Alps Electric Co., Ltd.
- US 4647742, "Alternate on-off switch mechanism", issued Mar 3, 1987, assigned to Omron Tateisi Electronics Co.
- US 4760225, "Push button switch having a frame member for preventing solder penetration of switch contacts", issued Jul 26, 1988, assigned to Alps Electric Co., Ltd.
- US 5724719, "Method of manufacturing a steering column stalk switch apparatus", issued Mar 10, 1998, assigned to ITT Corporation
- US 5852867, "Method of manufacturing a steering column stalk switch apparatus", issued Dec 29, 1998, assigned to ITT Industries, Inc.
- US D413091, "Steering column stalk switch", issued Aug 24, 1999, assigned to ITT Industries, Inc.
Images
References
- ↑ US patent 4186290, Katsuyuki Matsuo, "Push button switch", issued 29 January 1980, assigned to Alps Electric Co.,Ltd.
