Patent US3704528A successfully refreshed from Google Patents.
US3704528A
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US
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Display device for an animal circulation system
Assignee: Individual
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Filing: 1970-08-17
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Granted: 1972-12-05
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Expires: 1990-08-17
Abstract
Abstract A display device for an animal circulation system having a sheet material base in the form of a likeness of the animal, locating a first transparent fluid conducting tube system upon the base to represent the blood circulation arteries of the animal, locating a second transparent fluid conducting tube system upon the base to represent the blood circulating veins of the animal, visually differentiating the first system from the second system, the fluid flowing within each system including both liquid and gas.
Inventors
- 👤 Raymond J Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:17
CPC Classifications
G; G09; G09B; G09B23/00; G09B23/28; G09B23/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
A display device for an animal circulatory system comprising: a sheet material base, an animal likeness depicted on the front side of said base, a plurality of apertures formed within said base in the area of said likeness; a first flexible transparent fluid conduit system fixedly positioned upon said base, said first fluid conduit system passing through said apertures in such a manner to similarly represent upon said front the arteries of the animal; first pump means for moving a first colored fluid comprising a mixture of gas and liquid through said first fluid conduit system; a second flexible transparent fluid conduit system fixedly positioned upon said base, said second fluid conduit system passing through said apertures in such a manner to similarly represent upon said front the veins of the animal; second pump means for moving a second colored fluid comprising a mixture of gas and liquid through said second fluid conduit system; visual differentiation means distinguishing said first system from said second system; and each of said first and second pump means comprises separate centrifugal pumps, said gas formed by cavitation within said pumps.
Claim 2
Dependent Claim
186 words
A display device for an animal circulatory system comprising: a sheet material base, an animal likeness depicted on the front side of said base, a plurality of apertures formed within said base in the area of said likeness; a first flexible transparent fluid conduit system fixedly positioned upon said base, said first fluid conduit system passing through said apertures in such a manner to similarly represent upon said front the arteries of the animal; first pump means for moving a first colored fluid comprising a mixture of gas and liquid through said first fluid conduit system; a second flexible transparent fluid conduit system fixedly positioned upon said base, said second fluid conduit system passing through said apertures in such a manner to similarly represent upon said front the veins of the animal; second pump means for moving a second colored fluid comprising a mixture of gas and liquid through said second fluid conduit system; visual differentiation means distinguishing said first system from said second system; and each of said first and second pump means comprises separate centrifugal pumps, said gas formed by cavitation within said pumps.
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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) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |