Sobriety interlock

Details Sobriety interlock Sobriety interlock

1984-01-16

1986-06-03

Mitchell, David M.

Motor vehicles

With means for promoting safety of vehicle, its occupant or...

Responsive to absence or inattention of operator, or...

73 23, 340576, B60K 2708

Patent

active

045924430

ABSTRACT:
Apparatus for detecting alcohol on the breath including a microprocessor programmed to test breath temperature to guard against circumvention of the test. When the temperature test is passed, the breath alcohol concentration is measured. Responsive to the alcohol concentration, the microprocessor either: enables the ignition for a sober driver; enables the ignition for a tipsy but not drunk driver; disables the ignition, and imposes a programmed wait before allowing the test to be attempted again.

REFERENCES:
patent: 3823382 (1974-07-01), Gaddy
patent: 3830630 (1974-08-01), Kiefer et al.
patent: 3831707 (1974-08-01), Takeuchi
patent: 3855573 (1974-12-01), Honda et al.
patent: 4039852 (1977-08-01), Miyamoto et al.
patent: 4093945 (1978-06-01), Collier et al.
patent: 4132109 (1979-01-01), Vander Syde
patent: 4314564 (1982-02-01), Albarda

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