Portable battery operated electric smoke generator
First Claim
1. A portable battery operated smoke generator comprising, in combination:
- a tubular housing having a first end plate at one end thereof, and a second end plate at the opposite end thereof, said first end plate having an aperture therein;
current source means mounted within said tubular housing adjacent said second end plate and having positive and negative terminals for producing a direct current;
tubular coil means mounted within said tubular housing adjacent said first end plate and having a closed end and an open end, with the open end thereof communicating with the aperture of the first end plate of said tubular housing, said tubular coil means being adapted for superheating a vaporizable smoke producing liquid stored therein to a predetermined temperature;
said tubular coil means having the closed end thereof connected to the positive terminal of said current source means and the open end thereof connected to the negative terminal of said current source means by electrical connection means;
said electrical connection means including switching means for energizing said tubular coil means from said current source means for a period of time sufficient to superheat the vaporizable smoke producing liquid stored in said tubular coil means; and
smoke discharging means connected to the open end of said tubular coil means and extending through the aperture of said first end plate for releasing said superheated liquid into the atmosphere as a vapor, said smoke discharging means having therein a heat fusible relief disk adapted for sealing the vaporizable smoke producing liquid within said tubular coil means until such time as the aforesaid vaporizable smoke producing liquid is superheated by the current flowing through said tubular coil means.
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Accused Products
Abstract
A portable battery-powered electric smoke generator for simulating the sm of a fire for training purposes includes a tubular housing enclosing a rechargeable battery power supply having terminals connected to the ends of a tubular metallic coil filled with a vaporizable smoke producing liquid. One end of the tubular coil communicates with a smoke discharge port at one end of the housing. The discharge port is sealed by a fusible disk and communicates with an apertured smoke release cup. An electric switch arrangement, either thermal or electronic, is provided on the housing in the circuit between the coil and power supply for energizing the tubular coil for a time sufficient to superheat the vaporizable liquid therein. The heat of the tubular coil melts the fusible disk to release the superheated liquid through the smoke release cap into the atmosphere as a vapor simulating smoke. The liquid may be mineral oil, polyethylene glycol 200 or propylene glycol.
43 Citations
18 Claims
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1. A portable battery operated smoke generator comprising, in combination:
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a tubular housing having a first end plate at one end thereof, and a second end plate at the opposite end thereof, said first end plate having an aperture therein; current source means mounted within said tubular housing adjacent said second end plate and having positive and negative terminals for producing a direct current; tubular coil means mounted within said tubular housing adjacent said first end plate and having a closed end and an open end, with the open end thereof communicating with the aperture of the first end plate of said tubular housing, said tubular coil means being adapted for superheating a vaporizable smoke producing liquid stored therein to a predetermined temperature; said tubular coil means having the closed end thereof connected to the positive terminal of said current source means and the open end thereof connected to the negative terminal of said current source means by electrical connection means; said electrical connection means including switching means for energizing said tubular coil means from said current source means for a period of time sufficient to superheat the vaporizable smoke producing liquid stored in said tubular coil means; and smoke discharging means connected to the open end of said tubular coil means and extending through the aperture of said first end plate for releasing said superheated liquid into the atmosphere as a vapor, said smoke discharging means having therein a heat fusible relief disk adapted for sealing the vaporizable smoke producing liquid within said tubular coil means until such time as the aforesaid vaporizable smoke producing liquid is superheated by the current flowing through said tubular coil means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A portable smoke producing device comprising, in combination:
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a tubular housing having an aperture near the center thereof, a first end plate at one end thereof, and a second end plate at the opposite end thereof, said first end plate having an aperture therein; a direct current voltage source mounted within said tubular housing adjacent said second end plate, said direct current voltage source having positive and negative terminals adapted for providing a direct current; a tubular coil mounted within said tubular housing adjacent said first end plate, said tubular coil having one end thereof connected to the positive terminal of said direct current voltage source; a vaporizable smoke producing liquid stored within said tubular coil; a normally open manually actuable switch mounted within the aperture of said tubular housing, said normally open switch having an input terminal connected to the positive terminal of said direct current voltage source and an output terminal; a one-shot multivibrator having an input connected to the output terminal of said normally open switch and an output; a first transistor having an emitter, a base connected to the output of said one-shot multivibrator, and a collector connected to the positive terminal of said direct current voltage source; a second transistor having an emitter, a base connected to the emitter of said first transistor, and a collector connected to the positive terminal of said direct current voltage source; a third transistor having a collector connected to the other end of said tubular coil, a base connected to the emitter of said second transistor, and an emitter connected to the negative terminal of said direct current voltage source; a support member mounted within and extending through the aperture of said first end plate, said support member having a discharge port and an intake port connected to the other end of said tubular coil; an orifice mounted within the discharge port of said support member; a heat fusible relief disk positioned within said support member so as to seal the other end of said tubular coil until such time as the vaporizable smoke producing liquid therein is superheated by the current flow through said coil; and a smoke release cap coupled to the periphery of said support member so as to allow the removal of said smoke release cap from said support member, said smoke release cap having a plurality of small apertures in alignment with the discharge port of said support member. - View Dependent Claims (12, 13, 14)
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15. A smoke generating device comprising, in combination:
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a tubular housing having an aperture near the center thereof, a first end plate at one end thereof, and a second end plate at the opposite end thereof, said first end plate having an aperture therein; current source means mounted within said tubular housing adjacent said second end plate, and having positive and negative terminals for producing a direct current; tubular coil means mounted within said tubular housing adjacent said first end plate and having a closed end and an open end, with the closed end thereof connected to the positive terminal of said current source means, and with the open end thereof communicating with the aperture of the first end plate of said tubular housing, and effectively connected to the negative terminal of said current source means, said tubular coil means being adapted for superheating a vaporizable smoke producing liquid stored therein to a predetermined temperature; manually actuated normally open switching means mounted within the aperture of said tubular housing, said manually actuated normally open switching means having a first terminal connected to the positive terminal of said current source means, and a second terminal for allowing the direct current produced by said current source means to pass therethrough upon the closure thereof; one-shot multivibrator means having an input connected to the second terminal of said manually actuated normally open switching means and an output for providing a logic pulse at the output thereof in response to the closure of said manually actuated normally open switching means; a first transistor having an emitter, a base connected to the output of said one-shot multivibrator, and a collector connected to the positive terminal of said current source means; a second transistor having an emitter, a base connected to the emitter of said first transistor, and a collector connected to the positive terminal of said current source means; a third transistor having a collector connected to the closed end of said tubular coil means, a base connected to the emitter of said second transistor, and an emitter connected to the negative terminal of said current source means; said first, second, and third transistors to be switched on when the logic pulse provided by said one-shot multivibrator means is applied to the base of said first transistor so as to allow the current provided by said current source means to flow through said tubular coil means, and thereby superheat the vaporizable liquid stored within said tubular coil means; and smoke discharging means connected to the open end of said tubular coil means and extending through the aperture of said first end plate for releasing said superheated liquid into the atmosphere as a vapor, said smoke discharging means having therein a heat fusible relief disk adapted for sealing the vaporizable smoke producing liquid within said tubular coil means until such time as the aforesaid vaporizable smoke producing liquid is superheated by the current flowing through said tubular coil means. - View Dependent Claims (16, 17, 18)
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Specification