Apparatus for detecting and reporting liquids

• US 5,272,467 A
• Filed: 09/30/1991
• Issued: 12/21/1993
• Est. Priority Date: 10/05/1990
• Status: Expired due to Fees

• Current Assignee: Horst Krauleidies
• Original Assignee: Horst Krauleidies
• Inventors: Krauleidies, Horst
• Primary Examiner(s): Swann, III, Glen R.
• Application Number:
  US07/769,090
• Time in Patent Office: 813 Days
• Field of Search: 340/604, 340/605, 340/619
• US Class Current: 340/604
• CPC Class Codes: D06F 39/081 Safety arrangements for preventing water damage
• CPC Class Codes: G01M 3/16 using electric detection means G01M3/045, G01M3/06, G01M3/12, G01M3/20, G01M3/24, G01M3/26 take precedence
• CPC Class Codes: G01M 3/38 by using light G01M3/02 takes precedence
• CPC Class Codes: G01N 27/06 of a liquid involving electrolysis G01N27/26

Abstract

An apparatus for detecting and reporting the presence of liquid on a surface has a detector unit that rests on the surface with the detector unit including at least one pair of spaced-apart electrodes for conductively detecting the liquid, with the detector unit resting on the surface via the electrodes, and with the detector unit further including a sensor that is directed toward the surface and serves for optically detecting the liquid. The apparatus also comprises an operations unit, with the detector unit and the operations unit being electrically interconnected.

Claims

1. An apparatus for detecting and reporting the presence of liquid on a surface, comprising:

a detector unit that rests on said surface, with said detector unit including at least one pair of spaced-apart electrodes for conductively detecting said liquid, with said detector unit resting on said surface via said electrodes, and with said detector unit further including a sensor means that is directed toward said surface and serves for optically detecting said liquid; and

an operations unit, with said detector unit and said operations unit being electrically interconnected.

2. An apparatus according to claim 1, in which each of said electrodes includes a surface means that extends essentially parallel to said surface, with a pin-like projection being provided that extends from said electrode surface means.

3. An apparatus according to claim 2, in which said projection is integral with said electrode.

4. An apparatus according to claim 2, which includes variable length projections.

5. An apparatus according to claim 2, in which said projection is detachably connected to said electrode.

6. An apparatus according to claim 2, in which the length of said projection is such that when said apparatus rests upon a solid surface, at least an optically active surface of said sensor means does not contact said surface.

8. An apparatus according to claim 1, in which the electrical current consumption of said detector unit, which changes when said liquid is detected, provides a measurement parameter for the production of at least one of an electrical and audible signal by said apparatus.

9. An apparatus according to claim 1, in which said operations unit includes means for evaluating the detection results of said electrodes.

7. An apparatus according to claim in which at least an optically active surface of said sensor means is disposed between said electrodes.