U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Economical driving indicator device

Patent 4570226 Issued on February 11, 1986. Estimated Expiration Date: Icon_subject February 11, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3908451

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Compact column gage
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Two-dimensional display apparatus for an automobile
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Issued on: 07/01/1980
Inventor: Sakakibara

Speed alarm system for a motor vehicle
Patent #: 4223297
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Indicator and limit value alarm device
Patent #: 4251769
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Inventor: Ewert ,   et al.

Vehicle speed enforcement signal
Patent #: 4291295
Issued on: 09/22/1981
Inventor: Arnold

Motorcar dashboard
Patent #: 4293843
Issued on: 10/06/1981
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Programmable scan control circuit for providing bar graph display panel with selected scales and marker bars
Patent #: 4415891
Issued on: 11/15/1983
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Liquid level scale changeover measuring apparatus
Patent #: 4461175
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Inventor

Assignee

Application

No. 06/433092 filed on 10/06/1982

US Classes:

701/123, With indication of fuel consumption rate or economy of usage116/28R, VEHICLE345/34, Seven segment display345/35, Bar graph73/113Automobile fuel consumption

Examiners

Primary: Krass, Errol A.

Attorney, Agent or Firm

International Classes

B60R 16/02 (20060101)
G01F 9/02 (20060101)
G01F 9/00 (20060101)
F16H 63/42 (20060101)
F16H 63/00 (20060101)

Foreign Application Priority Data

1981-10-07 FR

Abstract

An economical driving indicator device for an automotive vehicle with an internal combustion engine, of the type indicating the instantaneous consumption of the vehicle per unit of distance traveled. The device monitors continuously the characteristics of the vehicle and transmits the monitored characteristics to a processing unit which determines the instantaneous real unit consumption, and the theoretical optimum unit consumption; and displays this information on a dial in the form of lighted areas composed of bar segments and an index indicating optimum consumption. The invention assists the driver in obtaining as economically as possible an optimum driving speed.

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