摘要:
An improved pyrotechnic cap capable of being activated by the radiant energy from an adjacent flashlamp. The cap includes a plastic container with a quantity of pyrotechnic composition hermetically sealed therein. Receipt of the described radiant energy causes activation of the composition whereby the cap produces an audible signal of high intensity (e.g. 158 to 164 decibels at 25 centimeters). The improvement comprises adding a desiccant material within the cap's container atop the pyrotechnic composition to absorb any quantities of moisture which might enter the container and adversely affect the cap's operability.
摘要:
For use in a color-corrected photoflash unit, a flashlamp having a clear glass envelope with a transparent protective exterior coating comprising a UV curable photopolymer tinted with a colorant providing a portion of the total color correction capability of the unit.
摘要:
There is disclosed a multi-flashlamp article capable of providing both highly intense audible and visual signals. The article is ideally suited for use as an intrusion alarm and includes a combustible member within the assembly's light-transmittable housing. A prestressed spring actuates the combustible by deforming a tubular primer having a quantity of fulminating material therein. This deflagrating material ignites a second quantity of fulminating material within the combustible's container to effect a suitable audible signal.
摘要:
A multilamp photographic flashlamp unit, the lamps of which are of the percussive primer type, having self-contained means in the form of a self-latching folded torsional spring for firing each of said lamps and featuring a short latch and a spring formation designed to give thereto a net downward force which holds the striker in contact with the flashcube base member.
摘要:
A low-pressure mercury-vapor discharge lamp, which is equipped with Hg or amalgam, has a pumping tube opening (4) with constricted cross-section or lumen. A solid body in the pumping tube (3) prevents the mercury from emerging into the discharge space. At the same time, the particular shape of the constriction and of the solid body, respectively, makes it possible for Hg vapor to diffuse through-passages between the pumping tube and the solid body into discharge vessel.
摘要:
A method is provided for constructing an electric lamp such as, for example, a tungsten halogen capsule, using carbon monoxide as a reducing gas to remove oxides from lamp components during the manufacture thereof. To this end, prior to evacuation the lamp envelope is filled with a forming gas such as, for example, a carbon monoxide- nitrogen mixture, and the envelope is given one or more light-ups to thereby deoxidize the lamp components.
摘要:
This invention relates to the lead-in wires used in association with press seals in soda-lime glass for achieving electrical connection into the sealed envelope of a compact fluorescent lamp. The lead-in wires have a core comprising nickel and iron. A metallic plating on the core prevents formation of Fe.sub.2 O.sub.3 during lamp sealing. The invention improves lamp life by maintaining seal integrity at elevated seal temperatures.
摘要:
A multilamp photoflash device comprising an outer housing containing a plurality of flashlamps and means for sequentially flashing the flashlamps of the device and having an antistatic coating on the surface of the outer housing is provided. The antistatic coating comprises an anionic surfactant and a deliquescent salt. A method for inhibiting electrostatic charge buildup in a multilamp photoflash device comprising an outer housing containing a plurality of flashlamps and means for sequentially flashing the flashlamps of the device is also provided. The method includes applying an antistat solution comprising an anionic surfactant and a deliquescent salt dissolved in a solvent to the surface of the outer housing of the multilamp photoflash device and evaporating the solvent from the antistat solution on the surface of the outer housing so as to form an antistatic coating thereon. The coating comprises the anionic surfactant and deliquescent salt components of the antistat solution.
摘要:
A glow discharge starter having an hermetically sealed envelope containing an ionizable medium, a bimetallic electrode and a counter electrode located therewithin. A pair of lead-in conductors passes through one end of the envelope for electrically connecting the electrodes. A spot of dried paste is disposed on a surface within the envelope and comprises a mixture of thorium and a binder. The quantity of thorium is sufficient to reduce the dark effect of the glow discharge starter by improving the dark starting performance of the glow discharge starter.