Land vehicles – Wheeled – Nesting vehicles
Patent
1990-07-11
1992-10-27
Mitchell, David M.
Land vehicles
Wheeled
Nesting vehicles
40482, 186 62, 34082532, B62B 3900
Patent
active
051583100
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).
REFERENCES:
patent: 3098213 (1963-07-01), Auer, Jr.
patent: 3110008 (1963-11-01), Kendall et al.
patent: 3157871 (1964-11-01), Umanoff
patent: 3362010 (1968-01-01), Rabinow
patent: 4125826 (1978-11-01), Rasmussen et al.
patent: 4236255 (1980-11-01), Burgener et al.
patent: 4849731 (1989-07-01), Melocik
patent: 4862160 (1989-08-01), Ekchian et al.
patent: 4868544 (1989-09-01), Havens
patent: 4930795 (1990-06-01), Tannehill et al.
patent: 4973952 (1990-11-01), Malec et al.
Kramer Steven L.
Tannehill John B.
Tannehill John M.
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