FR2373036A1 - Distance judgement device for vehicle driver - has windscreen mounted scale for estimating distance of markings on other vehicles - Google Patents

Distance judgement device for vehicle driver - has windscreen mounted scale for estimating distance of markings on other vehicles

Info

Publication number
FR2373036A1
FR2373036A1 FR7636560A FR7636560A FR2373036A1 FR 2373036 A1 FR2373036 A1 FR 2373036A1 FR 7636560 A FR7636560 A FR 7636560A FR 7636560 A FR7636560 A FR 7636560A FR 2373036 A1 FR2373036 A1 FR 2373036A1
Authority
FR
France
Prior art keywords
distance
vehicles
markings
scale
vehicle driver
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7636560A
Other languages
French (fr)
Other versions
FR2373036B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
POUVREAU PIERRE
Original Assignee
POUVREAU PIERRE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by POUVREAU PIERRE filed Critical POUVREAU PIERRE
Priority to FR7636560A priority Critical patent/FR2373036A1/en
Publication of FR2373036A1 publication Critical patent/FR2373036A1/en
Application granted granted Critical
Publication of FR2373036B1 publication Critical patent/FR2373036B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C3/00—Measuring distances in line of sight; Optical rangefinders
    • G01C3/22—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with variable angles and a base of fixed length at, near, or formed by the object

Abstract

A method of determining distances between vehicles in moving traffic by the drivers uses a marked scale of preset dimensions carried by each vehicle which when viewed through a windshield bearing appropriate scale markings, provides accurate assessment of vehicular distance to the driver. The device may be used at night by painting the scales with luminescent paint. In this case a specially screened lamp projects light rays at acute angles across the windshield attachment to illuminate the scale bars from which the distance information is read by the driver.
FR7636560A 1976-12-03 1976-12-03 Distance judgement device for vehicle driver - has windscreen mounted scale for estimating distance of markings on other vehicles Granted FR2373036A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7636560A FR2373036A1 (en) 1976-12-03 1976-12-03 Distance judgement device for vehicle driver - has windscreen mounted scale for estimating distance of markings on other vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7636560A FR2373036A1 (en) 1976-12-03 1976-12-03 Distance judgement device for vehicle driver - has windscreen mounted scale for estimating distance of markings on other vehicles

Publications (2)

Publication Number Publication Date
FR2373036A1 true FR2373036A1 (en) 1978-06-30
FR2373036B1 FR2373036B1 (en) 1981-11-13

Family

ID=9180653

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7636560A Granted FR2373036A1 (en) 1976-12-03 1976-12-03 Distance judgement device for vehicle driver - has windscreen mounted scale for estimating distance of markings on other vehicles

Country Status (1)

Country Link
FR (1) FR2373036A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4417404A (en) * 1981-07-27 1983-11-29 Doberschuetz Reiner Method and apparatus for measuring distances
GB2435020A (en) * 2006-02-09 2007-08-15 Gerard Doherty Braking distance indicator for windscreen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2195785A1 (en) * 1972-08-09 1974-03-08 Pouvreau Pierre
FR2208108A2 (en) * 1972-11-23 1974-06-21 Pouvreau Pierre

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2195785A1 (en) * 1972-08-09 1974-03-08 Pouvreau Pierre
FR2208108A2 (en) * 1972-11-23 1974-06-21 Pouvreau Pierre

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4417404A (en) * 1981-07-27 1983-11-29 Doberschuetz Reiner Method and apparatus for measuring distances
GB2435020A (en) * 2006-02-09 2007-08-15 Gerard Doherty Braking distance indicator for windscreen

Also Published As

Publication number Publication date
FR2373036B1 (en) 1981-11-13

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Legal Events

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ST Notification of lapse
AR Application made for restoration
BR Restoration of rights
ST Notification of lapse