Device for radiation shielding wireless transmit / receive electronic equipment such as cellular telephones from close proximity direct line-of-sight electromagnetic fields

• US 20030119459A1
• Filed: 11/13/2002
• Published: 06/26/2003
• Est. Priority Date: 07/06/1999
• Status: Active Grant

• Current Assignee: James S. Carillo, Juan C. Carillo Jr
• Original Assignee: James S. Carillo, Juan C. Carillo Jr
• Inventors: Carillo, Juan C. Jr., Carillo, James S.
• Granted Patent: US 6,947,764 B2
• Time in Patent Office: Days
• US Class Current: 455/114.1
• CPC Class Codes: A42B 1/008 with means for heating or cooling ventilating arrangements for head coverings A42C5/04
• CPC Class Codes: H04B 1/3838 Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use
• CPC Class Codes: H05K 9/002 with localised screening

Abstract

A device for locally shielding or blocking a user from close proximity electromagnetic fields emitted by a wireless transmit/receive electronic equipment antenna 22 such as a cellular telephone. The device includes a wearable garments such as a baseball cap 10, electronic carrying pouch 110, fan 210, 250, 410, eyeglass 610, or screens, joined with having EMI/RFI material properties that is specifically worn by the user or placed between the user and the electromagnetic field emanating wireless antenna source 22. It serves to provide as a electromagnetic field shield, either reflective, absorptive, or dissipative behavior in nature, from an direct line-of-sight electromagnetic field radiating from a wireless device antenna 22. The effective shielding area is determined by the shielding device dimensions, the direct line-of-sight electromagnetic field signal antenna transmission behavior and the placement of the shielding device located between the user local human body sensitive tissue area and the wireless transmit/receive electronic equipment antenna 22, as solutions for opened-form design method shielding which serves to minimize the shielding degradation effects and sensitivity interaction effects on normal non-blocked electromagnetic fields antenna signal transmission operation.

Claims

1. A radiation shielding or blocking device method of shielding electromagnetic fields from direct line-of-sight antenna signal radiation of an wireless transmit/receive electronic equipment antenna emanating in radial-isotropic-like direction including a cellular telephone antenna having shielding material properties integrated or incorporated with a predetermined consumer-item product, said method comprises the use of:

joining wearable garments including hats, such as a baseball cap with electromagnetic interference/radio frequency interference (EMI/RFI) material properties to form hybrid wearable garment devices,

joining contour-shaped screens with EMI/RFI material properties to form types of hybrid screen devices, joining eyewear articles including an eyeglass with EMI/RFI material properties to form types of hybrid eyewear article devices,

joining wearable wrap-around type articles including a bandanna or to a scarf with EMI/RFI material properties to form hybrid wearable wrap-around type article devices, joining electronic equipment carrying pouch of extended upwardly fan structure arrangement with EMI/RFI material properties to form hybrid electronic equipment carrying pouch of extended upwardly fan structure arrangement devices,

joining foldable or fixed fan structure arrangement with EMI/RFI material properties to form hybrid foldable or fixed fan structure arrangement devices,

joining an internally pop-up fan mechanism arrangement with EMI/RFI material properties to form hybrid internally pop-up fan arrangement devices,

whereby said devices with respect to the system user'"'"'s wireless transmit/receive electronic equipment type used and to the degree of shielding required are specifically worn or placed between the wireless transmit/receive electronic equipment antenna and the sensitive human body tissue part to provide means for effective electromagnetic field shielding or blockage, either reflective or absorptive or dissipative behavior in nature or some interdependency combinations of said behavior group, from potentially harmful direct line-of-sight of electromagnetic fields emanating from a wireless transmit/receive electronic equipment antenna, as solutions for opened-form design method which serves to minimize the shielding degradation effects and sensitivity interaction effects on normal non-blocked electromagnetic fields antenna signal transmission operation.

2. A radiation shielding device method according to claim 1, the said wireless transmit/receive electronic equipment antenna further comprises of:

using wireless transmit/receive electronic equipment that is of wearable nature, is also referred to as a wearable electronic hardware equipment having a wireless antenna for wireless communication linking,

whereby radiation shielding devices are specifically worn between the wearable electronic hardware equipment wireless antenna area and the sensitive human body tissue part area to provide means for predetermined local human body tissue area shielding of electromagnetic fields emanating from various types of wearable electronic equipments.

3. A radiation shielding or blockage device method according to claim 1 comprises of:

using a plurality of EMI/RFI materials, processes and forms used to operate specifically within the 100 Mega-Hertz to 300 Giga-Hertz electromagnetic field frequency spectrum range parameter,

using a plurality of EMI/RFI materials and processes used comprising;

conductive composites, conductive laminates, conductive fibers, molded/extruded conductive elastomers, conductive silicone-base, conductive polymer-base, woven fabric, foam, conductive coatings, foil, tape, film shielding laminates, conductive film can be Indium Tin Oxide (ITO) or multi-layer conductive coatings, conductive material deposition process, silk screen on conductive paint, metal mesh, knitted wire mesh, grilles, which constitute electrical properties having a predetermined resistivity range and is within about zero ohms per square and less than or equal to 100,000 ohms per square range parameter,

using a plurality of EMI/RFI materials used comprising of types of forms such as;

conductive woven fabric, metal or polymer-based or silicone-based mesh, knitted wire mesh, grilles, of said types of forms having a multitude array of square holes in sheet-material form of predetermined thickness, where said forms design comprises a grid structure arrangement of square holes, the overall effective square hole area design range is within about zero to 0.01 inch² in grid area effective square hole dimensions, which constitute electrical properties having predetermined electromagnetic waveguide cutoff wavelength range parameter behavior in nature,

using a plurality of EMI/RFI materials used comprising of types of material textures such as;

flat surface shape, periodic triangular-surface or accordion surface shape, periodic grid of pyramidal volume protruding element surface shape, periodic grid of semi-bubble volume protruding-in or protruding-out element surface shape, periodic grid of waffle-iron shape protruding-out or protruding-in element surface shape, which constitute the enhancement of increasing electromagnetic field surface absorption range parameter behavior in nature,

whereby the radiation shielding device design performance of said range parameters predeterminedly selected contain means for effective electromagnetic field shielding or blockage by the invention and serves to minimize the shielding degradation effects and sensitivity interaction effects on non-blocked electromagnetic field normal antenna signal transmission operation.

4. A radiation shielding or blockage device method according to claim 1, where said radiation shielding device method comprising:

using conventional fabrication techniques used to produce wearable garments including a hat such as a baseball cap, using conventional fabrication techniques used to produce wearable wrap-around type articles including a bandanna or scarf,

using conventional fabrication techniques used to produce a electronic equipment carrying pouch of extended upwardly fan structure arrangement,

using conventional fabrication techniques used to produce eyewear articles including an eye-glass,

using conventional fabrication techniques used to produce attachable fan structure arrangement with fixed or foldable or collapsible functions,

using conventional fabrication techniques used to produce internal electronic equipment pop-up fan mechanism arrangement with fixed or foldable or collapsible functions,

using conventional fabrication techniques used to produce free-standing or suspended support contour-shaped screen structures including blinds with fixed or foldable or collapsible functions,

where said conventional fabrication techniques joined specifically with EMI/RFI material properties to form hybrid fabrication constructions and process forms of the electromagnetic field radiation shielding device method, comprises of;

using an EMI/RFI material layer or liner joined in a predetermined about or multitude of alternating sandwich layered fashion with a predetermined wearable garment layer or support member structure layer or screen structure layer where said sandwich layers could be sewn on together, or adhesively attached or a wrapped around configuration or a temporary attachment by way of clip-on pins or pinned on attach or Velcro-attached or non-permanent bond adhesive attach or process depositioned attach together, to form together a predetermined sandwiched layer arrangement,

using an EMI/RFI material layer joined with predetermined about or multitude layers of a predetermined wearable garment layer or support member layer or screen structure layer to form together a predetermined laminate arrangement,

using a some about or multitude combination of predetermined EMI/RFI material types and layers used entirely in place of the wearable garment layer or the support member structure layer or the screen structure layer to form together a predetermined hybrid material and process arrangement,

whereby said conventional fabrication techniques, said predetermined sandwiched layer arrangement, said predetermined laminate arrangement, said predetermined hybrid material and process arrangement, provide predetermined methods of hybrid wearable garment fabrication construction techniques, hybrid eyewear article fabrication construction techniques, hybrid fan structure fabrication construction techniques, hybrid pop-up fan mechanism fabrication construction techniques, and hybrid screen structure fabrication construction techniques for the invention.

7. A radiation shielding device method according to claim 1 embodying both externally mounted electronic body antenna and internally embedded electronic body antenna structure design types.

8. A radiation shielding device method according to claim 1, further including:

using an increasing or decreasing elongated invention structure to encompass around the user body part in a predetermined set of dimensions of length, width, height or thickness of the embodiments of the shield device invention variations having a predetermined effective shielding area coverage,

whereby said predetermined effective shielding area coverage provide means of predetermined compliance in meeting the user'"'"'s required electromagnetic field shielding or blocking performance.

10. A radiation shielding device serving means to provide electromagnetic field EMF radiation shielding or blocking either reflective or absorptive or dissipative behavior in nature, in order to reduce direct line-of-sight antenna EMF radiation emanating in radial isotropic direction and the like where a composite EMF portion is in direction towards the sensitive human body tissue part is blocked or shielded and simultaneously allowing a predetermined non-blocked EMF radiation to propagate freely