Patents
Patents for F21L 4 - Electric lighting devices with self-contained electric batteries or cells (13,838)
03/1993
03/16/1993US5193898 Rechargeable miniature flashlight
03/16/1993US5193896 Lighting device for personal use
03/09/1993US5192126 Remote control fluorescent lantern
03/04/1993DE4128368A1 Rechargeable battery powered pocket torch - has movable cover displayed to allow plug element to engage supply with block preventing engagement if cover is open
02/1993
02/25/1993DE4127765A1 Light circuit e.g. for pocket lamp flashlight or torch - has electronic switch with decay circuit and microphone. so that lamp extinguishes after half a minute, but re-illuminates if there is sufficient noise
02/24/1993EP0528501A1 Flashlight with flexible extension
02/23/1993US5188450 Cushion grip and spare battery holder for flashlight
01/1993
01/12/1993US5178453 Mounting assembly for portable articles
12/1992
12/15/1992US5171086 Hand held adjustable focus flash light
12/08/1992US5170331 Elemental flashlight
12/01/1992US5167447 Flashlight using different size batteries
11/1992
11/24/1992US5165781 Flashlight with color producing chambers
11/17/1992US5165048 Flashlight battery recharger system
11/10/1992US5161879 Flashlight for covert applications
11/03/1992US5161095 Flashlight with swivel head and rotary switch
10/1992
10/29/1992DE4113442A1 Individually rechargeable decorative Christmas tree lighting system - comprises number of rechargeable light units that plug into tree mounted holders to form mains-independent lighting system
10/28/1992EP0510300A2 Pocket lamp
10/27/1992US5158358 Tailcar switch focus flashlight
10/27/1992US5158357 Flashlight of selectable colors
10/27/1992US5158356 Ornamental lamp with internal switch
10/13/1992US5154483 Flashlight with flexible extension
10/08/1992DE4110985A1 Explosion proof hand-lamp with housing and rotation symmetrical reflector part - has reflector surrounding lamp bulb which can be adjusted to alter light direction, set of batteries and current supply components accommodated in lamp housing
09/1992
09/22/1992US5150284 Temporary replacement safety light system
09/01/1992US5144207 Circuit and method for igniting and operating an arc lamp
09/01/1992US5143441 Miniature flashlight
08/1992
08/26/1992EP0499838A1 Electric apparatus
08/11/1992US5138538 Self-extinguishing flashlight
08/11/1992US5138537 Variable light beam flashlight
08/04/1992US5136477 Miniature battery-powered lighting device
07/1992
07/01/1992EP0493370A2 Tailcap insert
06/1992
06/30/1992US5126927 Flashlight having improved bulb enclosure
06/30/1992US5126923 Illumination device
06/29/1992CA2058484A1 Flashlight with tailcap switch boot
06/23/1992US5124894 Variable focusing flashlight
06/23/1992US5124892 Hand mounted aviation night vision illuminating device
06/16/1992US5122938 Twist switch for flashlight
06/09/1992US5121308 Miniature flashlight with two switches
06/09/1992CA1303125C Rechargeable battery-powered device
06/02/1992US5119280 Multipurpose flashlight
05/1992
05/29/1992WO1992008925A1 Flashlight battery recharger system
05/26/1992US5117341 Multi-function flashlight
05/20/1992EP0486328A1 Decorative torch
05/19/1992US5115382 Headlamp apparatus
05/12/1992US5113327 Lighted magnifier device
05/12/1992US5113326 Miniature flashlight
04/1992
04/14/1992US5105343 Decorative torch with illuminated grip portion
04/14/1992US5105309 Signalling baton
04/08/1992CN1060147A Combined incandescent/fluorescent lantern
04/07/1992US5103381 Flashlight
03/1992
03/18/1992EP0475922A1 Combination courtesy light and detachable flashlight assembly
03/17/1992US5097399 Flashlight with swivel head
03/14/1992WO1992005386A1 High intensity lamp
03/14/1992CA2092696A1 High intensity lamp
03/03/1992US5092807 Helical flow optically decorated baton
02/1992
02/26/1992EP0471690A1 Location marker
02/26/1992EP0439554A4 Switch for portable light source
02/11/1992CA2048874A1 Flashlight with swivel head
01/1992
01/29/1992EP0468822A2 Omnidirectional light
01/28/1992CA2047972A1 Omnidirectional light
01/15/1992EP0466630A2 Torch
01/14/1992US5081568 Traffic police baton with means to indicate the direction in the night
01/07/1992US5079679 Multi-purpose traffic director's stick
12/1991
12/31/1991US5077644 Reflector for hand held flashlight
12/31/1991US5077643 Combination courtesy light and detachable flashlight assembly
12/19/1991DE4019298A1 Electric pocket torch with chargeable current source - has current source casing with terminal contacts for charging, coacting with counter-contacts
12/17/1991CA1293231C Flashlight with a backup system
12/10/1991US5072347 Search light
12/10/1991US5072346 Light beam amplifier
12/05/1991DE4017654A1 Hand held mining lamp with firedamp protection - has three housing sections, electrically coupled via pressure tight cable guides, and rechargeable batteries
12/03/1991US5070438 Pen-size flashlight
12/03/1991US5070437 Electrical light for underwater use
11/1991
11/05/1991US5063483 Battery powered light with mouthpiece
10/1991
10/22/1991US5058900 General purpose illuminator assembly
10/17/1991DE4107148A1 Vibration-protected fluorescent light - has tube batteries and circuit within transparent tube with shock absorber supports
10/09/1991CN1055229A Variable focusing switching assembly of flashlight
10/02/1991DE4009777A1 Multi-use electrical lighting unit - has lamp that can be removed from stand for use as portable unit
09/1991
09/17/1991US5050053 Flashlight of selectable colors
09/03/1991US5045980 Flashlight adapter
08/1991
08/28/1991CN1013700B Flashilight with adjustable lamp housing
08/27/1991US5043854 Flashlight with swivel head
08/21/1991EP0442853A2 Self-contained apparatus for emergency lighting incorporating alarm systems for fire, gas and the like
08/14/1991DE4003808A1 Accumulator driven electric device e.g. torch - has accumulator attached to drawer to be pushed into device housing
08/07/1991EP0439554A1 Switch for portable light source
07/1991
07/30/1991US5036444 High intensity lamp
07/30/1991US5036442 Illuminated wand
07/24/1991EP0438100A1 Touch initiated light module
07/23/1991US5034847 Portable light beacon
07/18/1991CA2034284A1 Touch initiated light module
06/1991
06/26/1991EP0434197A1 Disposable flashlight
06/25/1991US5027035 Search lamps and torches
06/13/1991DE4018072A1 Portable electric lamp with reflector and battery - is secured with clip to clothing of user or to exterior of obstacle in poor visibility
06/12/1991EP0431462A2 Portable lamp
06/06/1991DE3939791A1 Rechargeable pocket torch allowing mains recharging - uses contact pins inserted in mains plug after removal of lamp stage
06/05/1991EP0430869A1 Baton for signalling
06/04/1991US5021929 Flashlight having secondary beam
05/1991
05/23/1991DE3938532A1 Safety flashlight - has rechargeable batteries and is activated of mains fails to indicate location
05/21/1991US5018057 Touch initiated light module
05/16/1991WO1991006803A1 Adjustable apparel-held flashlight
05/16/1991DE3937488A1 Rechargeable battery powered torch or lamp - has operation from one battery while second one is held in charged state
05/08/1991DE4018060A1 Universal car and domestic accumulator light with emergency function - has electronic automatic changeover circuit and slide switch for mains