Patent ID: 9737895
Date: 2017-08-22
CPC Classifications: B03C,H01T

Claim:
1. A portable battery powered personal ionic air purifier energizing a personal air space with ions and cleaning particulate pollutants therefrom that thereby become entrained thereon that poses little or no personal shock risk and that minimizes battery drain to maximize battery life and useful operating lifetime while maintaining an ion cloud in the personal air space effective to remove particulate pollutants therefrom, comprising: a portable housing of size and weight adapted to be comfortably worn about the head and neck of any person who wears it; a conductive grounding neck strap connected to said portable housing that is adapted to support the portable housing about the head and neck and that is adapted to conductively ground the conductive grounding neck strap to the body of any person who wears the portable housing about their head and neck by use of said conductive grounding neck strap; an ion emitter carried by said portable housing that is adapted to be exposed to the facial area and nose of any person who wears the portable housing about their head and neck and breathes the air in the personal air space about their facial area and nose; electrical circuitry defining electrical ground and carried by said portable housing including a battery supplying power; wherein said conductive grounding neck strap is electrically connected to said electrical ground; wherein said electrical circuitry includes first means powered by said battery for providing a pulse train and second means coupled to said ion emitter and powered by said battery for energizing said ion emitter at ionization potential in response to said pulse train; wherein said pulse train provided by said first means is a pulse train of predetermined frequency and duty cycle; wherein said second means for energizing said ion emitter in response to said pulse train is responsive to said pulse train of predetermined duty cycle and frequency to so energize said ion emitter at said ionization potential as to provide emission of ions in ion bursts of controlled burst length and at controlled intervals, with substantially no emission of ions in the interburst intervals therebetween; wherein said controlled burst length of said emission of ions provided in ion bursts of controlled burst length and at controlled intervals is controlled by said duty cycle of said pulse train; wherein said controlled intervals of said emission of ions provided in ion bursts of controlled burst length and at controlled intervals are controlled by said frequency of said pulse train; wherein said predetermined duty cycle of said pulse train is determined to have a comparatively-short “on” time and comparatively-long “off” time in order to minimize if not prevent shock hazard to any person who wears said portable housing about their head and neck, and to minimize battery drain from said battery supplying power, drawing power from said battery supplying power to energize said ion emitter at said ionization potential only during said comparatively-short “on” time while not energizing said ion emitter at said ionization potential during said comparatively-long “off” time, thereby conserving said battery supplying power during said comparatively-long “off” time, while minimizing if not preventing shock risk; and wherein said predetermined pulse frequency of said pulse train providing said emission of ions in ion bursts at said controlled intervals is determined to energize said ion emitter to provide each another burst of ions in time to so refresh the air space with each said another burst of ions as to create said ion cloud effective to remove particulate pollutants in said personal air space and to maintain said ion cloud effective to remove particulate pollutants in the personal air space that otherwise would dissipate over time.