Electric lamp and discharge devices – With temperature modifier – For lead-in-seal or stem protection
Patent
1974-07-22
1976-09-14
Miller, J D
Electric lamp and discharge devices
With temperature modifier
For lead-in-seal or stem protection
317 18C, 313 54, H02H 316
Patent
active
039809285
ABSTRACT:
A fire detector of the type including a smoke chamber and a grid supported in the chamber on an insulating element. In order to prevent the flow of leakage currents from the grid to the body of the chamber an electrically-conductive element is arranged around the insulating element in circumferential contact therewith. The electrically-conductive element is arranged to be at the same potential as the grid so that no leakage currents are able to flow from the grid to the body of the chamber.
REFERENCES:
patent: 3529201 (1970-09-01), Rudolph
patent: 3666954 (1972-05-01), Sasaki et al.
patent: 3824422 (1974-07-01), Van der Walt et al.
Newington Timothy J.
Swanepoel Lourens P.
Miller J D
Salce Patrick R.
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