Combination meter for automobile

• US 4,035,764 A
• Filed: 04/21/1975
• Issued: 07/12/1977
• Est. Priority Date: 05/16/1974
• Status: Expired due to Term

• Current Assignee: Nippon Soken, Inc. (DENSO Corporation)
• Original Assignee: Nippon Soken, Inc. (DENSO Corporation)
• Inventors: Yamaguchi, Hiroaki, Fujinami, Hiroshi
• Primary Examiner(s): Waring, Alvin H.
• Application Number:
  US05/569,748
• Time in Patent Office: 813 Days
• Field of Search: 340/52 F, 340/52 R, 340/52 E, 340/53, 340/62, 340/213 R, 340/223, 340/263, 340/412, 340/414, 340/415
• US Class Current: 340/459
• CPC Class Codes: B60T 17/225 brake fluid level indicators level indication in general G01F; H01H
• CPC Class Codes: G07C 5/0825 using optical means

Abstract

A combination meter for an automobile comprising a first group of indicators and a second group of indicators adapted to come into operation later than the first group of indicators by a predetermined time, whereby when a key switch is closed by the driver of an automobile, those items which are essential in the safe driving of the automobile are sequentially indicated thus enabling the driver to check each of these essential items.

Claims

1. A combination meter for an automobile comprising:

a first group of indicators responsive to an output signal indicative of the closure of a key switch for simultaneously starting the indication operation of all said indicators;

an oscillator for producing an oscillation signal;

a counter connected to said oscillator for producing at least one command signal when the number of oscillations of said oscillation signal exceeds a predetermined number; and

indicator means connected to said counter for starting the indication operation thereof in response to said command signal.

2. A combination meter according to claim 1, wherein said first indicators and indicator means are arranged on an instrument panel in the front part of an operating room of the automobile.

3. A combination meter for an automobile comprising:

a storage battery installed in an automobile for supplying current;

a warning system for electrically indicating the existence of faulty conditions in various units of said automobile, said warning system having a plurality of warning indicators for simultaneously indicating said respective units;

an indication system for electrically indicating the running conditions varying with the automobile running;

power supply connection control means connected between said storage battery and said warning system for automatically starting and controlling the supply of current from said storage battery to said warning system immediately upon the closing of a key switch of said automobile to cause automatically said simultaneous indication of said respective units by said plurality of warning indicators; and

delay means connected between said storage battery and said indication system for automatically starting and controlling the supply of current from said storage battery to said indication system at the expiration of a predetermined time after the closing of said key switch for then causing said varying conditions to be indicated automatically.

4. A combination meter according to claim 3, wherein said delay means comprises:

an oscillator for producing a predetermined frequency signal; and

a counter connected to said oscillator for starting the supply of current to said indication system when said frequency signal counted therein exceeds a predetermined number.