US5158310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Display system for shopping cart
Assignee: Individual
•
Filing: 1990-07-11
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Granted: 1992-10-27
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Expires: 2010-07-11
Abstract
Abstract A display system (299) includes a visual display unit (300) mounted on a shopping cart (12d). In one preferred embodiment, a low-intensity ultrasonic signal is emitted by a transmitter (308) positioned at a desired location within a store for reception by a transducer (306) mounted on the shopping cart. The signal from the transducer (306) is transmitted to a switching circuit (316) to activate visual indicators in the form of directional lights (320, 322) thereby to direct the shoppers attention to a particular item located adjacent the transmitter (308).
Inventors
- 👤 John M. Tannehill
- 👤 John B. Tannehill
- 👤 Steven L. Kramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:36
CPC Classifications
G; G09; G09F; G09F11/00; G09F11/23; B; B62; B62B; B62B3/00; B62B3/14; B62B3/1408; B62B3/142; G09F11/02; G09F23/00; G09F23/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
138 words
A display system, comprising: (a) a shopping cart; (b) a first signal generator located remote from the shopping cart; (c) a first signal receiver mounted on the shopping cart for receiving signals from the first signal generator; (d) a visual output signal mounted on the shopping cart; (e) a first control circuit to activate the visual output device upon reception of an appropriate signal from the first signal generator by the first signal receiver; (f) a second signal generator mounted on the shopping cart; (g) a display located remote from the shopping cart; (h) a second signal receiver associated with the remote display to receive signals from the second signal generator; and, (i) a second control circuit to activate the remote display upon reception of an appropriate signal by the second signal receiver from the second signal generator.
Claim 2
Dependent Claim
138 words
A display system, comprising: (a) a shopping cart; (b) a first signal generator located remote from the shopping cart; (c) a first signal receiver mounted on the shopping cart for receiving signals from the first signal generator; (d) a visual output signal mounted on the shopping cart; (e) a first control circuit to activate the visual output device upon reception of an appropriate signal from the first signal generator by the first signal receiver; (f) a second signal generator mounted on the shopping cart; (g) a display located remote from the shopping cart; (h) a second signal receiver associated with the remote display to receive signals from the second signal generator; and, (i) a second control circuit to activate the remote display upon reception of an appropriate signal by the second signal receiver from the second signal generator.
Claim 3
Dependent Claim
32 words
The display system according to claim 1, wherein the second signal receiver includes means for receiving the second signal when the shopping cart is within a certain proximity of the remote display.
Claim 4
Dependent Claim
143 words
A display system comprising: (a) a shopping cart; (b) a first audio signal generator located remote from the shopping cart; (c) a first audio signal receiver mounted on the the shopping cart for receiving signals from the first audio signal generator; (d) a visual output device mounted on the shopping cart; (e) a first control circuit to activate the visual output device upon reception of an appropriate signal from the first signal generator by the first signal receiver; (f) a second audio signal generator mounted on the shopping cart; (g) a display located remote from the shopping cart; (h) a second signal receiver associated with the remote display to receive signals from the second signal generator; and, (i) a second control circuit to activate the remote display upon reception of an appropriate signal by the second signal receiver from the second signal generator.
Claim 5
Dependent Claim
143 words
A display system comprising: (a) a shopping cart; (b) a first audio signal generator located remote from the shopping cart; (c) a first audio signal receiver mounted on the the shopping cart for receiving signals from the first audio signal generator; (d) a visual output device mounted on the shopping cart; (e) a first control circuit to activate the visual output device upon reception of an appropriate signal from the first signal generator by the first signal receiver; (f) a second audio signal generator mounted on the shopping cart; (g) a display located remote from the shopping cart; (h) a second signal receiver associated with the remote display to receive signals from the second signal generator; and, (i) a second control circuit to activate the remote display upon reception of an appropriate signal by the second signal receiver from the second signal generator.
Claim 6
Dependent Claim
32 words
The display system according to claim 3, wherein the second signal receiver includes means for receiving the second signal when the shopping cart is within a certain proximity of the remote display.
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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) | 1995-10-27 | 1996-04-27 | 1996-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-27 | 2000-04-27 | 2000-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-27 | 2004-04-27 | 2004-10-27 | $7700.00 | Window Closed / Lapsed |