US3633296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Display device
Assignee: Hankscraft Co
•
Filing: 1970-01-09
•
Granted: 1972-01-11
•
Expires: 1990-01-09
Abstract
Abstract A fine cable is stretched taut between suitable supports with a bracket at one end supporting a nondirectional AC motor driving a drive pulley and a bracket at the other end supporting an idler pulley. A suitable message is supported on a plastic tube slidable on the cable and is connected to a line running around the pulleys. A simple spring is fixed on the cable adjacent each bracket so the traveling message strikes the spring with the resultant impact being fed back to the motor and causing reversal of the motor direction. Therefore, the message travels back and forth on the cable.
Inventors
- 👤 Henry D Brenner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:52
CPC Classifications
G; G09; G09F; G09F11/00; G09F11/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
81 words
A mobile display device comprising, a cable stretched taut between supports, spaced brackets mounted on the cable, an idler pulley mounted on one bracket, a drive pulley mounted on the other bracket, a motor mounted on said other bracket, a line reeved over the pulleys to be driven thereby, a message-bearing placard slidably mounted on the cable and connected to the line to be driven thereby, and means for reversing the motor when the message reaches spaced locations between the brackets.
Claim 2
Dependent Claim
81 words
A mobile display device comprising, a cable stretched taut between supports, spaced brackets mounted on the cable, an idler pulley mounted on one bracket, a drive pulley mounted on the other bracket, a motor mounted on said other bracket, a line reeved over the pulleys to be driven thereby, a message-bearing placard slidably mounted on the cable and connected to the line to be driven thereby, and means for reversing the motor when the message reaches spaced locations between the brackets.
Claim 3
Dependent Claim
23 words
A display device according to claim 1 in which springs on the cable between the placard and each bracket determine said spaced locations.
Claim 4
Dependent Claim
24 words
A display device according to claim 2 including a drive coupling having appreciable lost motion and mounted between the motor and the drive pulley.
Claim 5
Dependent Claim
21 words
A display device according to claim 3 in which the placard is mounted on a tube which slides on the cable.
Claim 6
Dependent Claim
29 words
A display device according to claim 1 including a drive coupling between the motor and the drive pulley, the coupling having appreciable lost motion to facilitate the motor reversal.
Claim 7
Dependent Claim
38 words
A display device according to claim 1 in which the brackets are clamped on the cable to determine the limits of travel of the placard independently of the spacing of the supports to which the cable is attached.
References Cited (Backward Citations)
US2481686A
Cited
US2787088A
Cited
US3066432A
Cited
US3136289A
Cited
US3221666A
Cited
US3315389A
Cited
US3417498A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |