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
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.
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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 |