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1. 发明专利

CA936256A ELECTRIC LAMP HOLDERS 未知
公开(公告)号：CA936256A
公开(公告)日：1973-10-30
申请号：CA117319
申请日：1971-07-05
申请人： BURGESS J , EVANS W
发明人： BURGESS J , EVANS W
IPC分类号： G01D11/28
摘要： An electric lamp holder comprises an electric lamp support and a housing therefor. The housing is of cylindrical form, one end and an adjacent cylindrical wall portion of the housing being of glass, and the remainder of the housing being of a metal having a coefficient of expansion which is substantially the same as that of the glass. Electrical connection to the electric lamp carried by the support is provided by a pair of resilient electrical contacts extending through the glass end wall of the housing. A plurality of these holders are mounted within a casing of a pressurized indicating instrument to illuminate from the rear a display face of the instrument. The housings are air-tight and are mounted in apertures in the casing, air-tight seals being provided between the housings and the instrument casing so as to enable the electric lamps to be replaced without depressurizing the instrument.

2. 发明专利

NZ194209A DEVICE FOR ACTUATING FLUSHING ACTION OF AUTOMATIC FLUSHING SYSTEM 未知
公开(公告)号：NZ194209A
公开(公告)日：1983-11-18
申请号：NZ19420980
申请日：1980-07-01
申请人： BURGESS R H , BURGESS J
发明人： BURGESS R H , BURGESS J

3. 发明授权

US3715969A Mine ventilation control system 失效
标题翻译：矿井通风控制系统
公开(公告)号：US3715969A
公开(公告)日：1973-02-13
申请号：US3715969D
申请日：1971-02-26
申请人： BURGESS J
发明人： BURGESS J
IPC分类号： E21F1/04 , E21F1/14 , E21F1/00 , E21F3/00
CPC分类号： E21F1/14 , E21F1/04
摘要： A mine ventilation control system for directing air flow in the immediate region of the working face of a mine, including an extensible curtain assembly which can be readily mounted adjacent the end of a line curtain and advanced toward the working face of the mine at a rate commensurate with the removal of the material being mined.

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