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US4820236A Expired / Lapsed US ⏱️ 0.0 years remaining

Doll with sensing switch

Assignee: Hasbro Inc
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Filing: 1987-10-22
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Granted: 1989-04-11
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Expires: 2007-10-22
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Abstract

Abstract A doll contains a flexible sensor which is captured in the doll near a surface thereof and will emit an electrical signal when subjected to bending or pressure to indicate that this part of the doll is being touched or manipulated. The sensor utilizes a film having piezoelectric properties to generate a signal when subjected to such forces.

Inventors

  • 👤 William Berliner
  • 👤 Mark B. Johnson-Williams

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 23:19
CPC Classifications
A; A63; A63H; A63H3/00; A63H3/28; Y; Y10; Y10S; Y10S310/00; Y10S310/80

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 150 words
In combination, a doll or the like having a simulated figure portion which is resiliently deformable, said portion having a simulated flexible skin providing the outer surface thereof and a filler therewithin; a resiliently deflectable piezoelectric sensing element secured in said figure portion closely adjacent to said outer surface thereof, said sensing element comprising a flexible piezoelectric synthetic resin film which generates an electrical signal when subjected to stress, and a pair of electrodes in electrical contact with said film; an electrical sound generating device within said doll, the flexibility of said sensing element substantially eliminating any hard spot in said figure portion where it is disposed; and electrical leads extending from said electrodes of said sensing element to said device to transmit a signal to said device, said sensing element being sensitive to pressure applied to said skin disposed thereover to cause deflection thereof and thereby generate a signal.
Claim 2
Dependent Claim 150 words
In combination, a doll or the like having a simulated figure portion which is resiliently deformable, said portion having a simulated flexible skin providing the outer surface thereof and a filler therewithin; a resiliently deflectable piezoelectric sensing element secured in said figure portion closely adjacent to said outer surface thereof, said sensing element comprising a flexible piezoelectric synthetic resin film which generates an electrical signal when subjected to stress, and a pair of electrodes in electrical contact with said film; an electrical sound generating device within said doll, the flexibility of said sensing element substantially eliminating any hard spot in said figure portion where it is disposed; and electrical leads extending from said electrodes of said sensing element to said device to transmit a signal to said device, said sensing element being sensitive to pressure applied to said skin disposed thereover to cause deflection thereof and thereby generate a signal.
Claim 3
Dependent Claim 21 words
The combination of claim 1, wherein said sensing element includes a resiliently deflectable backing strip adhered to one of said electrodes.
Claim 4
Dependent Claim 26 words
The combination of claim 1 wherein said filler is a foamed synthetic resin material and said sensing element is encapsulated within said foamed synthetic resin material.
Claim 5
Dependent Claim 16 words
The combination of claim 1 wherein said piezoelectric synthetic resin of said film is polyvinylidene fluoride.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1992-04-10 1992-10-10 1993-04-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1996-04-10 1996-10-10 1997-04-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2000-04-10 2000-10-10 2001-04-11 $7700.00 Window Closed / Lapsed

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