US3918176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Visual divided attention alcohol safety interlock system
Assignee: United States Department of Transportation
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Filing: 1974-05-22
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Granted: 1975-11-11
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Expires: 1994-05-22
Abstract
Abstract Disclosed herein is an intoxication testing system including means for simultaneously producing a pair of varying displays visible to a person under test who selectively operates corresponding actuators to produce responses dependent upon his reaction to the displays. Analyzers compare the selected responses with predetermined proper responses and an evaluation system measures and records the level to which the responses deviate from the predetermined proper responses.
Inventors
- 👤 Iii Charles N Abernethy
- 👤 Americo A Iannini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:40
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/16; A61B5/18; B; B60; B60K; B60K28/00; B60K28/02; B60K28/06; B60K28/063
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
124 words
A divided attention intoxication testing apparatus comprising: first pursuit tracking display means for providing a first randomly varying display visible to a person being tested; first actuator means selectively operable by the person to produce first selected responses; first comparison means for comparing said first varying display with said first responses; second peripheral visual field display means for providing a second randomly varying display visible to the person viewing said first display; second actuator means different from said first actuator means and selectively operable by the person to produce second responses; second comparison means different from said first comparison means for comparing said second display with said second responses; and evaluation means for evaluating the comparisons made by said first and second comparison means.
Claim 2
Dependent Claim
124 words
A divided attention intoxication testing apparatus comprising: first pursuit tracking display means for providing a first randomly varying display visible to a person being tested; first actuator means selectively operable by the person to produce first selected responses; first comparison means for comparing said first varying display with said first responses; second peripheral visual field display means for providing a second randomly varying display visible to the person viewing said first display; second actuator means different from said first actuator means and selectively operable by the person to produce second responses; second comparison means different from said first comparison means for comparing said second display with said second responses; and evaluation means for evaluating the comparisons made by said first and second comparison means.
Claim 3
Dependent Claim
26 words
Apparatus according to claim 1 wherein said second display means comprises random generator means responsive to said second actuator means for randomly varying said second display.
Claim 4
Dependent Claim
28 words
Apparatus according to claim 1 wherein said second display means comprises a plurality of lights and energizing means for selectively energizing individual ones of said plurality of lights.
Claim 5
Dependent Claim
34 words
Apparatus according to claim 3 wherein said energizing means comprises random generator means for energizing said plurality of lights in a random sequence and for randomly varying the energization period of said energized lights.
Claim 6
Dependent Claim
24 words
Apparatus according to claim 4 wherein said energizing means further comprises control means rendering said random generator means responsive to said second actuator means.
Claim 7
Dependent Claim
26 words
Apparatus according to claim 5 wherein said second actuator means comprises a plurality of actuators each associated with a distinct set of said plurality of lights.
Claim 8
Dependent Claim
28 words
Apparatus according to claim 6 wherein each of said plurality of actuators comprises an electrical switch disposed adjacent to said set of lights with which it is associated.
Claim 9
Dependent Claim
47 words
Apparatus according to claim 7 wherein said first display means comprises a screen, a target indicator movable on said screen, target control means for moving said target indicator on said screen, and a tracking indicator movable on said screen in response to operation of said first actuator.
Claim 10
Dependent Claim
19 words
Apparatus according to claim 8 wherein said light sets comprise a pair of light arrays that straddle said screen.
Claim 11
Dependent Claim
24 words
Apparatus according to claim 9 wherein said first actuator is a rotatable wheel and said elecTrical switches are mounted on diametrically opposed positions thereon.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |