Patent US4058911A successfully refreshed from Google Patents.
US4058911A
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Road-runner alcohol safety interlock system
Assignee: United States Department of Transportation
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Filing: 1976-08-18
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Granted: 1977-11-22
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Expires: 1996-08-18
Abstract
Abstract An apparatus for determining a test subject's level of intoxication. Included is a display visible to the test subject and in which is produced by test equipment a pair of randomly moving, spaced apart objects. The test subject operates an actuator to indicate his selections of changing imaginary positions in the display having a predetermined constant spatial relationship to the moving objects. Dynamically determined by a computer system are the actual locations of those positions which are compared with the test subject's selections. Because of the requirement for determining imaginary positions by mental extrapolation, a very rigorous test of the subject's psychomotor capability is obtained.
Inventors
- 👤 Anne W. Story
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:49
CPC Classifications
B; B60; B60K; B60K28/00; B60K28/02; B60K28/06; B60K28/063; A; A61; A61B; A61B5/00; A61B5/16; A61B5/18
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
94 words
An intoxication testing apparatus comprising: display means for producing a display visible to a test subject; first test means for producing a first moving object in said display; second test means for producing a second moving object in said display; computer means for dynamically determining the changing locations of the midpoint of given positions between said moving objects and having a constant spatial relationship thereto; actuator means operable by the subject to dynamically select particular positions between said moving objects; and comparator means for dynamically comparing the locations of said given and particular positions.
Claim 2
Dependent Claim
94 words
An intoxication testing apparatus comprising: display means for producing a display visible to a test subject; first test means for producing a first moving object in said display; second test means for producing a second moving object in said display; computer means for dynamically determining the changing locations of the midpoint of given positions between said moving objects and having a constant spatial relationship thereto; actuator means operable by the subject to dynamically select particular positions between said moving objects; and comparator means for dynamically comparing the locations of said given and particular positions.
Claim 3
Dependent Claim
23 words
Apparatus according to claim 1 wherein said comparator comprises integrator means for integrating the differences in location between said given and particular positions.
Claim 4
Dependent Claim
18 words
Apparatus according to claim 1 including feedback limit means for limiting the minimum separation of said moving objects.
Claim 5
Dependent Claim
36 words
Apparatus according to claim 3 wherein said feedback limit means comprises reversal means for reversing the direction of movement of one of said moving objects in response to the occurrence of a given minimum separation therebetween.
Claim 6
Dependent Claim
22 words
Apparatus according to claim 4 wherein said first and second test means produce oscillating movement of said objects along rectilinearly aligned paths.
Claim 7
Dependent Claim
21 words
Apparatus according to claim 5 wherein said objects are images and said first and second test means comprise image generation means.
Claim 8
Dependent Claim
23 words
Apparatus according to claim 6 wherein said first and second test means comprise random generator means for producing random movement of said images.
References Cited (Backward Citations)
US3358130A
Cited
US3311995A
Cited
US3483302A
Cited
US3594921A
Cited
US3833759A
Cited
US3883962A
Cited
US3861790A
Cited
US3918176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-11-21 | 1981-05-23 | 1981-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-21 | 1985-05-23 | 1985-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-21 | 1989-05-23 | 1989-11-22 | $7700.00 | Window Closed / Lapsed |