| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 41 | coleman | US553106D | US553106A | 1896-01-14 | ||
| 42 | Telegraph-key | US528345D | US528345A | 1894-10-30 | ||
| 43 | William frank lott | US481114D | US481114A | 1892-08-16 | ||
| 44 | Telegraph-key | US479859D | US479859A | 1892-08-02 | ||
| 45 | green | US455320D | US455320A | 1891-07-07 | ||
| 46 | Telegraph-key | US427876D | US427876A | 1890-05-13 | ||
| 47 | Eeady | US346930D | US346930A | 1886-08-10 | ||
| 48 | District of | US343469D | US343469A | 1886-06-08 | ||
| 49 | Automatic circuit-closer for telegraph-keys | US303956D | US303956A | 1884-08-19 | ||
| 50 | Automatic circuit-closer for telegraph-keys | US284508D | US284508A | 1883-09-04 | ||
| 51 | Telegraph-key | US232007D | US232007A | 1880-09-07 | ||
| 52 | Improvement in telegraph-keys | US178433D | US178433A | 1876-06-06 | ||
| 53 | Improvement in self-closing telegraph-key s | US94556D | US94556A | 1869-09-07 | ||
| 54 | Improvement in telegraph-keys | US92285D | US92285A | 1869-07-06 | ||
| 55 | Improvement in self-closing telegraph-keys | US91955D | US91955A | 1869-06-29 | ||
| 56 | Improvement in circuit-closers for telegraphs | US35694D | US35694A | 1862-06-24 | ||
| 57 | ELECTRICALLY-CONTROLLED ACTUATOR DEVICE, AND WASHING AGENTS DISPENSING DEVICE COMPRISING SUCH AN ACTUATOR DEVICE | US14369260 | 2012-12-28 | US20140312061A1 | 2014-10-23 | Giuseppe Marone |
| An actuator device which includes a fixed support structure, an actuation member movable, a contrast member tending to maintain the actuation member in a rest position, a shape-memory wire connected to the structure and to the actuation member, and an electric circuit for supplying an electric current to the shape-memory wire. The circuit includes a pair of terminals. One end of the shape-memory wire is connected to a first terminal. The circuit includes further an electric switch, including a first conducting member electrically connected with the second terminal, and a second conducting member carried by the actuation member and electrically connected with the other end of the shape-memory wire. The switch is closed when the actuation member is in the rest position, and remains closed until when the actuation member reaches a working position, and opens when the actuation member passes beyond the working position. | ||||||
| 58 | Twin lever key with horizontal finger pads for code transmission | US344128 | 1994-11-23 | US5773769A | 1998-06-30 | Christopher W. Raymond |
| A twin lever key with horizontal finger pads for code transmission when used with an electronic iambic keyer in Amateur Radio, the index finger and the middle or third finger of the operator resting on the finger pads, whereby signals are generated by pressing the finger pads of either of the two arms singly or in combination thereof, to produce the dot and dash code signals in iambic predetermined code sequences. There is no lateral wrist or hand action as is typical of the common "paddle key" since the hand is held in the horizontal plane and the key is activated by downward vertical motion from the fingers. The key may be used for code practice, normal continuous wave (cw) operating or contesting. | ||||||
| 59 | Telegraph-key. | US15278517 | 1917-03-06 | US1265887A | 1918-05-14 | ALCALA BENJAMIN DE |
| 60 | Telegraph-key. | US1913800484 | 1913-11-12 | US1099912A | 1914-06-16 | BRITTIN RAYMOND CLARK |
QQ群二维码
意见反馈
意见反馈