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Patent US3219827A successfully refreshed from Google Patents.
Patent US5338896A successfully refreshed from Google Patents.
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US5338896A Expired / Lapsed US ⏱️ 0.0 years remaining

Shield device for cellular phones

Assignee: Individual
•
Filing: 1993-09-03
•
Granted: 1994-08-16
•
Expires: 2013-09-03
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Abstract

Abstract A shield device for any phone with an antenna that emits and receives microwaves, in particular cellular phones. The shield device protects a user by blocking the passage of microwaves to and from the cellular phone antenna while the phone is in use. In the first embodiment of the invention, the shield device comprises a rectangular shaped body with an upper tab for attaching the shield device to the antenna and two opposing lower tabs for attaching the shield device to the upper portion of the cellular phone. The shield device consists of a cover with a pocket for receiving the shielding member. In a second embodiment of the invention, the shield device contemplates a semi-circular hollow tubular member adapted to fit over an antenna. The tubular member has an elastic bottom portion adapted to fit firmly over the antenna ferrule. The bottom portion of the tubular member consists of a resilient disk member, thus protecting the user from any microwaves emitted and received by the antenna. In a third embodiment of the invention, the shield device comprises a hollow tubular member with telescoping members of a collapsible, retractable form.

Inventors

  • 👤 David M. Danforth

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 14:14
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/38; H04B1/3827; H04B1/3833; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/22; H01Q1/24; H01Q1/241; H01Q1/242; H01Q1/245

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 153 words
A shield device for cellular phones whereby the shield device protects a user form microwaves emitted and received by an antenna, said shield device comprising: a shielding means for blocking the passage of microwaves; and; a cover means for positioning the shield means adjacent the cellular phone antenna, the cover means having pocket means for receiving the shielding means; wherein the cover means comprises a cover with a top end having an upper tab integral therewith and a bottom end having a pair of integral, opposing lower tabs adapted as a means for securing the cover means to said cellular phone, the upper tab having a pair of apertures therethrough for receiving the cellular phone antenna, thereby securing the top end of the cover means to the cellular phone, the lower tabs having hook and loop fasteners cooperably secured thereto for securing the bottom end of the cover means to the cellular phone.
Claim 2
Dependent Claim 153 words
A shield device for cellular phones whereby the shield device protects a user form microwaves emitted and received by an antenna, said shield device comprising: a shielding means for blocking the passage of microwaves; and; a cover means for positioning the shield means adjacent the cellular phone antenna, the cover means having pocket means for receiving the shielding means; wherein the cover means comprises a cover with a top end having an upper tab integral therewith and a bottom end having a pair of integral, opposing lower tabs adapted as a means for securing the cover means to said cellular phone, the upper tab having a pair of apertures therethrough for receiving the cellular phone antenna, thereby securing the top end of the cover means to the cellular phone, the lower tabs having hook and loop fasteners cooperably secured thereto for securing the bottom end of the cover means to the cellular phone.
Claim 3
Dependent Claim 39 words
The shield device of claim 1 and further including a spacer member positioned at the top end of the shield device intermediate the cover means and cellular phone antenna for precluding contact between the user's head and shield device.
Claim 4
Dependent Claim 23 words
The shield device according to claim 2, wherein the shield means comprises a circular hollow tubular member cooperable with the cellular phone antenna.
Claim 5
Dependent Claim 44 words
The shield device according to claim 3, wherein the cover means is a hollow tubular member positioned about a semi-circular metal shield layer, adapted to fit over the cellular phone antenna, the cover means having an open first end and an open second end.
Claim 6
Dependent Claim 51 words
The shield device according to claim 4, wherein the cover means has an open second end comprising a base portion for receiving a base ferrule portion of the cellular phone antenna, the base potion having a recess including a resilient disk member therein for securing the shield device and cellular phone.
Claim 7
Dependent Claim 31 words
The shield device according to claim 5, wherein the inner metal shield layer and cover means are formed of telescoping members adapted for allowing extension and retraction of the shield device.

References Cited (Backward Citations)

US4740794A Cited
US4721965A Cited
US4725846A Cited
US4868576A Cited
US5218187A Cited
US5041838A Cited
US5262792A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1997-08-15 1998-02-14 1998-08-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2001-08-15 2002-02-14 2002-08-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2005-08-15 2006-02-14 2006-08-16 $7700.00 Window Closed / Lapsed

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