Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB37361/38A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Friemann and Wolf GmbH
Original Assignee
Friemann and Wolf GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Friemann and Wolf GmbHfiledCriticalFriemann and Wolf GmbH
Publication of GB523096ApublicationCriticalpatent/GB523096A/en
F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
F21S9/04—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a generator
F21S9/043—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a generator driven by wind power, e.g. by wind turbines
Abstract
523,096. Electric mine lamps. FRIEMANN & WOLF GES. Dec. 22, 1938, Nos. 37361, 37362, 37363 and 37364. Convention dates, March 3, July 7, Dec. 3 and Dec. 3. [Classes 39 (ii) and 75 (iv)] Electric mine lamps having a generato: coupled to a compressed air turbine mounted or the lamp and supplying the lighting current and in which the compressed air is used to give a pressure greater than atmospheric in a housing 3 enclosing the lamp have a closable aperture which allows water &c in the wall of the housing to be drained from the housing.
GB37361/38A1938-03-031938-12-22Improvements in or relating to electric mine lamps
ExpiredGB523096A
(en)