US3601923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amusement device employing dilatant suspension filler
Assignee: Individual
•
Filing: 1968-10-07
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Granted: 1971-08-31
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Expires: 1988-10-07
Abstract
Abstract An amusement device or toy comprised of an impervious elastic container in a desired configuration and a dilatant suspension enclosed therein whereby jabbing, squeezing or pulling the same creates unusual distortions, recovery and flow properties which are not only fascinating but also enhance human tactile and kinesthetic perception of materials.
Inventors
- 👤 Bruce L Rosenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:06
CPC Classifications
A; A63; A63H; A63H37/00; Y; Y10; Y10S; Y10S297/00; Y10S297/01
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
59 words
An amusement device to enhance human tactile and kinesthetic perception and sensitivity comprising a liquid and water vaporimpervious elastically deformable closed member and a dilatant suspension whose apparent viscosity increase instantaneously with increasing rate of shear contained in said member, the member being free of entrapped air, whereby manipulating the device will create unusual distortions, recovery and flow properties.
Claim 2
Dependent Claim
59 words
An amusement device to enhance human tactile and kinesthetic perception and sensitivity comprising a liquid and water vaporimpervious elastically deformable closed member and a dilatant suspension whose apparent viscosity increase instantaneously with increasing rate of shear contained in said member, the member being free of entrapped air, whereby manipulating the device will create unusual distortions, recovery and flow properties.
Claim 3
Dependent Claim
22 words
The combination of claim 1 wherein said dilatant suspension consists essentially of cornstarch or tapioca starch particles dispersed in an aqueous medium.
Claim 4
Dependent Claim
43 words
The combination of claim 2 wherein the dilatant suspension contains 58-54 percent by weight of the starch providing near-spherical particles whose particle size is substantially uniform and within the range of about 2.5-10 microns and manifests a characteristic flow rate of 1-10 cm./sec.
Claim 5
Dependent Claim
22 words
The combination of claim 3 wherein the member is made of rubber and of such thickness as to provide 400-800 percent elongation.
Claim 6
Dependent Claim
35 words
The combination of claim 1 wherein the member is made of rubber and of such thickness as to provide 400-800 percent elongation, the dilatant suspension comprising cornstarch or tapioca starch dispersed in an aqueous medium.
Claim 7
Dependent Claim
14 words
The combination of claim 5 wherein the aqueous medium is a saturated saline solution.
Claim 8
Dependent Claim
15 words
The combination of claim 1 wherein the member is in the form of a doll.
Claim 9
Dependent Claim
16 words
The combination of claim 1 wherein the member is in the form of a human head.
Claim 10
Dependent Claim
15 words
The combination of claim 1 wherein the member is in the form of a reptile.
Claim 11
Dependent Claim
47 words
The combination of claim 2 wherein the liquid portion is large enough to lubricate the particles when the suspension is at rest but small enough to cause particle-to-particle contact and friction on imposition of a sudden stress to the member at the locus of the imposed stress.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |