Benjamin Thomas Lopez

US Patent:

47495537, Jun 7, 1988

Filed:

Apr 8, 1987

Appl. No.:

7/035758

Inventors:

Benjamin L. Lopez - Westminster CO
Steven A. Beard - Denver CO
Kirby Phillips - Lakewood CO

Assignee:

Life Loc, Inc. - Wheatridge CO

International Classification:

G01N 114

US Classification:

422 84

Abstract:

A breath alcohol detector measures and compensates for distance between the mouth of the individual exhaling breath into the ambient air and the detector, the atmospheric pressure, and the temperature. Blood alcohol content information is calculated using these compensation factors and a signal obtained from an electrochemical fuel cell which is indicative of the amount of alcohol or other gas contained in the sample. The detector also includes a reciprocally acting electromagnetically energized motor which drives a diaphragm pump to draw the sample into the electrochemical fuel cell.

US Patent:

48742996, Oct 17, 1989

Filed:

Jun 6, 1988

Appl. No.:

7/203279

Inventors:

Benjamin L. Lopez - Golden CO
Steven A. Beard - Denver CO
Kirby Phillips - Lakewood CO

Assignee:

Life Loc, Inc. - Wheatridge CO

International Classification:

F04B 4314

US Classification:

417413

Abstract:

A precision pump for moving small volumes of fluid includes an electromagnet in which is reciprocally mounted an armature carrying a diaphragm on one end such that upon reciprocal movement of the armature an alternating high and low pressure can be created in a pumping chamber to move fluid through the pump. In one embodiment of the pump, the electromagnet drives the armature in one direction and a spring returns the armature to effect the reciprocating movement while in a second embodiment a pair of electromagnets are axially aligned and cooperate with a pair of magnets on the armature to alternately move the armature in a linear reciprocating motion as current is alternately applied to the electromagnets.