Patents
Sitemap › F21 - Lighting › F21K - Light sources not otherwise provided for › F21K 5 - Light sources using charges of combustible material, e.g. illuminating flash devices
Patents for F21K 5 - Light sources using charges of combustible material, e.g. illuminating flash devices (485)
02/1983
02/15/1983US4373906 Multi-lamp photoflash unit and fabricating process
02/01/1983US4371915 Photoflash unit with reflector recesses for circuit board switches
02/01/1983US4371914 Photoflash unit with circuit board radiation switches for selective pairing of lamps
02/01/1983US4371913 Reflector lamp module for photoflash array
01/1983
01/25/1983US4369556 Method of making a photoflash lamp having new lead seal structure
01/18/1983US4369028 Photoflash lamp
01/18/1983CA1139711A1 Method of applying protective coating on lamp envelope
01/18/1983CA1139578A1 Miniature photoflash lamp and method of making
12/1982
12/14/1982US4363622 Combustion flashbulb
10/1982
10/26/1982US4355971 Vented multi-lamp photoflash unit
10/12/1982CA1133269A1 Tinted uv cured coatings for photoflash lamps
10/06/1982EP0061751A1 Filament-type photoflash lamp, process for fabricating the same, and primer material
09/1982
09/08/1982EP0059438A1 Opaque reflector for multilamp photoflash array
09/07/1982US4348173 Subminiature photoflash lamp with spaced-apart, light-emitting pyrotechnic charges
08/1982
08/31/1982US4347053 Photographic flash device using light-emitting pyrotechnic charges
08/24/1982US4345895 Photoflash device having die-stamped circuit board assembly with flexure means to prevent switch cutting
08/10/1982CA1129226A1 Photoflash lamp having expandable burning volume
07/1982
07/27/1982US4341817 Flashlamp containment coating
07/27/1982US4341513 Subminiature photoflash lamp having light-emitting pyrotechnic charge
07/07/1982EP0055457A1 Vented multi-lamp photoflash unit
07/07/1982EP0055456A1 Multi-lamp photoflash unit and fabricating process
07/07/1982EP0055410A2 Photoflash unit with reflector recesses for circuit board switches
06/1982
06/30/1982EP0054864A2 Reflector lamp module for photoflash array
04/1982
04/20/1982US4325771 Method of making a die-stamped circuit board assembly for photoflash devices
04/20/1982CA1122155A1 Method of applying protective coating on lamp envelope
03/1982
03/23/1982US4320572 Die-stamped circuit board assembly having relief means-method of making
03/17/1982EP0047475A2 Miniature photoflash unit with encapsulated flash lamps
03/09/1982CA1119571A1 Flash lamp array having electrical shield
02/1982
02/16/1982US4315733 Photoflash lamp with loose powder composition and method of making
02/09/1982US4314394 Photoflash lamp construction and method of making same
02/09/1982CA1118036A1 Multilamp photoflash unit with more reliable circuit arrangement
01/1982
01/27/1982EP0044552A1 Electrically-activated high-voltage photoflash lamp excluding a press-sealed end portion and method of making same
01/27/1982EP0044551A1 Method of making a pressurized electrically-activated high-voltage photoflash lamp
01/19/1982US4311453 High voltage flashlamp with ignition means including a plurality of spark gap members
01/05/1982US4309166 Combustion flashbulb
12/1981
12/29/1981CA1115337A1 Photoflash lamp array having shielded switching circuit
11/1981
11/24/1981US4302794 Linear multilamp photoflash unit
11/24/1981US4302182 Photoflash lamp
11/10/1981CA1112066A1 Photoflash lamp construction and method of making same
11/10/1981CA1112065A1 Multiple photoflash unit having grounded reflector
11/03/1981CA1111817A1 Shield connection in photoflash array
11/03/1981CA1111815A1 Flashlamp assembly with tapered housing
10/1981
10/28/1981EP0038422A1 Die-stamped circuit board assembly for photoflash devices and method of making
10/27/1981CA1111398A1 Photoflash array and method of construction
10/13/1981CA1110600A1 Photoflash lamp array
10/13/1981CA1110599A1 Photoflash lamp array having contoured sheet shield
09/1981
09/30/1981EP0036607A1 Die-stamped circuit board assembly having relief means and method of making
09/30/1981EP0036481A2 Process to prepare polymer-bonded explosives and products obtained according to this process
09/23/1981EP0036208A1 Photoflash device
09/15/1981CA1109041A1 Multilamp photoflash unit with static grounding system
08/1981
08/25/1981CA1107705A1 Flashlamp assembly for providing highly intense audible and visual signals
08/25/1981CA1107526A1 Photoflash lamp array having high voltage shorting type flash lamps and radiation sensitive switching elements
08/04/1981US4282559 Photoflash unit having flashlamps using looped lead-in wires for retention
07/1981
07/21/1981US4279590 Fibers reinforcement, curable
07/21/1981CA1105428A1 Photoflash unit with secured insulator
07/14/1981US4278420 Photoflash lamp, method of making same, and photoflash circuit
07/14/1981US4278310 Method of making a percussively-ignited photoflash lamp
07/07/1981CA1104364A1 Photoflash lamp having a primer comprising an additive of finely divided inert material
06/1981
06/30/1981CA1103948A1 Flash lamp assembly having heat-responsive indexing members
06/23/1981CA1103637A1 Multilamp photoflash unit
06/23/1981CA1103636A1 Multilamp photoflash unit
06/03/1981EP0029523A1 Miniature photoflash lamp and method of making
06/02/1981US4270897 Photoflash lamp construction and method of making same
05/1981
05/19/1981US4268891 Multilamp photoflash unit having grounded reflector
05/19/1981CA1101484A1 Copy apparatus using chemical flashlamp
04/1981
04/01/1981EP0025905A1 Linear multilamp photoflash unit
03/1981
03/31/1981CA1098494A1 Activation means for flashlamp article
03/24/1981US4257765 Color corrected flash lamp
03/10/1981CA1097093A1 Photoflash lamp
02/1981
02/10/1981US4249887 Photoflash lamp having gap-fire ignition mount, and method of making the mount
02/03/1981US4249230 Photoflash unit utilizing circuit board having flashlamps clamped thereto
01/1981
01/13/1981US4245279 Photoflash unit with inverted flashlamps
01/06/1981US4243371 Flash lamp array construction
12/1980
12/09/1980CA1091205A1 Last-flash indicator for photoflash array
12/02/1980CA1090602A1 Flash lamp array having shorting lamps
11/1980
11/25/1980US4235590 Tinted UV cured coatings for photoflash lamps
11/25/1980CA1090410A1 Photographic flashlamp unit
11/11/1980US4233023 Photoflash lamp having expandable burning volume
11/04/1980US4232058 Method of coating a lamp with a U.V. curable resin with fibers therein
11/04/1980CA1088769A1 Lamp with protective coating and method of applying same
10/1980
10/21/1980US4229161 Photoflash lamp and method of making
10/07/1980US4226583 Photoflash lamp with knurled foil strip
09/1980
09/23/1980CA1086087A1 Photoflash lamp and method of making same
08/1980
08/12/1980US4217089 Photoflash lamp
08/05/1980US4215980 Percussively-ignitable flashlamp assembly and selective firing mechanism therefor
07/1980
07/15/1980CA1081492A1 Combustion flashlight lamp
07/08/1980CA1081161A1 Method for coating photoflash lamps
06/1980
06/24/1980US4209823 Phosphorescent material activated by light from ignition of pyrotechnic material
06/10/1980CA1079071A1 Photoflash lamp
05/1980
05/27/1980US4204834 Leadless electric flash lamp
05/06/1980US4201540 Percussively ignited photoflash lamp and method of making same
04/1980
04/15/1980US4198200 Thermosetting addition-polymerized unsaturated urethane or urea resin, photoflash glass coating
04/15/1980US4198199 Lamp with protective coating and method of applying same
04/08/1980US4197333 Method of applying protective coating on lamp envelope
03/1980
03/18/1980CA1073877A1 Flash array having shielded switching circuit
03/11/1980US4192596 Camera with improved shutter arrangement
02/1980
02/26/1980US4190413 Photoflash lamp
02/26/1980CA1072622A1 Multiple flash lamp unit
02/12/1980CA1071401A1 Photoflash lamp
11/1979
11/20/1979US4174944 Single lead electrically-activated flashlamp
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