US3774329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotatable display device
Assignee: MOTION DYNAMICS Inc
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Filing: 1972-02-22
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Granted: 1973-11-27
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Expires: 1992-02-22
Abstract
Abstract A display device for advertising purposes including an electric motor which turns a first display portion in one direction around a vertical axis freely carried by the first display portion and a plurality of freely journaled wheel members in frictional contact between the first and second display portions whereby the said display portions are turned in opposite directions.
Inventors
- 👤 M Horowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:19
CPC Classifications
G; G09; G09F; G09F11/00; G09F11/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
172 words
In a display device for moving a first display unit in one rotary direction and a second display unit in the opposite rotary direction, the improvement comprising: a. a stationary support comprising a rod coupled to a supporting means and including a plurality of radially extending shafts secured thereto; b. a plurality of wheels freely and rotatably mounted on said shafts; c. a first disk mounted on one side of the wheels in frictional contact therewith and coupled to an electric motor for axial rotation relative to the rod; d. a second disk mounted on the opposite side of the wheels in frictional contact therewith and adapted to rotate in axial alignment with the first disk but in an opposite direction; e. display means respectively secured to the first and second disks; and f. an electrical power source comprising a plurality of electric dry cells Mounted in a holder secured to said motor; g. means comprising two pin and bayonet slot connections to detachably couple the dry cell holder to the motor.
Claim 2
Dependent Claim
172 words
In a display device for moving a first display unit in one rotary direction and a second display unit in the opposite rotary direction, the improvement comprising: a. a stationary support comprising a rod coupled to a supporting means and including a plurality of radially extending shafts secured thereto; b. a plurality of wheels freely and rotatably mounted on said shafts; c. a first disk mounted on one side of the wheels in frictional contact therewith and coupled to an electric motor for axial rotation relative to the rod; d. a second disk mounted on the opposite side of the wheels in frictional contact therewith and adapted to rotate in axial alignment with the first disk but in an opposite direction; e. display means respectively secured to the first and second disks; and f. an electrical power source comprising a plurality of electric dry cells Mounted in a holder secured to said motor; g. means comprising two pin and bayonet slot connections to detachably couple the dry cell holder to the motor.
Claim 3
Dependent Claim
30 words
A display device according to claim 1 wherein said motor housing is made of insulating material and wherein the pin and bayonet slot couplings also act as power conducting means.
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) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |