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A haircutting appliance comprises an enclosed housing having a hollow handle connecting the housing to a vacuum source to carry away cut hairs from a subject's head.
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| Number | Title | Issue Date |
| 7334319 | Method for opening the contact gap of a vacuum interrupter The aim of the invention is to improve the breaking ability of vacuum interrupter in the medium- and high-voltage range. Said aim is achieved whereby the contact pieces which may be displaced relative to each other are moved with a relatively high speed during a fir... | 02/26/2008 |
| 4135071 | Vacuum circuit interrupter with disc-shaped beryllium contacts This vacuum-type circuit interrupter is a high current interrupter rated for interrupting currents of 35,000 amperes r.m.s. or higher. Despite this high current interrupting requirement, each of its disc-shaped contacts can be made from an exceptionally s... | 01/16/1979 |
| 4072837 | High continuous current vacuum-type circuit interrupter A vacuum interrupter having a continuous current rating of several thousand amperes comprises a pair of disc-shaped contacts primarily of beryllium that are respectively mounted on the inner ends of a pair of conductive contact rods. The mounting means fo... | 02/07/1978 |
| 4061894 | Vacuum-type circuit interrupter with improved protection for bellows This vacuum-type circuit interrupter comprises a plate located at the outer side of one end cap of the evacuated envelope of the interrupter. Within the envelope there are separable beryllium contacts, one of which is carried by a movable contact rod exte... | 12/06/1977 |
| 4053728 | Brazed joint between a beryllium-base part and a part primarily of a metal that is retractable with beryllium to form a brittle intermetallic compound A brazed joint between a beryllium-base part and a copper-base part comprises a first layer of brazing material in contact with the beryllium-base part. This brazing material is an alloy that just prior to brazing consists essentially of silver and a mino... | 10/11/1977 |
| 4028514 | High current vacuum circuit interrupter with beryllium contact A vacuum-type circuit interrupter rated to interrupt currents of 30,000 amperes r.m.s. and highercomprises a pair of separable contacts having arcing portions between which arcs are formed upon disengagement of said contacts. These arcing portions are of ... | 06/07/1977 |
