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Moisture indicating device

  • US 3,117,442 A
  • Filed: 05/20/1960
  • Issued: 01/14/1964
  • Est. Priority Date: 05/20/1960
  • Status: Expired due to Term
First Claim
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1. A MOISTURE INDICATING DEVICE HAVING A CIRCULAR HOUSING INCLUDING A FRONT PLATE HAVING OPENINGS THEREIN, AND HAVING AN ELONGATED TUBULAR STEM CONNECTED AT ONE END TO THE PERIPHERY OF THE HOUSING AND FORMING AN EXTENSION THEREOF, A MOVABLE PLATE BEARING INDICIA ADJUSTABLY POSITIONED WITHIN THE HOUSING BEHIND THE FRONT PLATE AND MOVABLE RELATIVE THERETO TO THEREBY SHIFT THE POSITIONS OF THE INDICIA, RESPECTIVELY, RELATIVE TO THE OPENINGS OF THE FRONT PLATE FROM ONE POSITION TO ANOTHER, A MOISTURE SENSITIVE ELEMENT, CHARACTERIZED BY ITS EXPANSION AND CONTRACTION IN RESPONSE TO THE PRESENCE OF MOISTURE, SECURED CONCENTRICALLY OF SAID STEM AND EXTENDING INTO SAID HOUSING, A LINKAGE OPERATIVELY CONNECTED TO THE MOISTURE SENSITIVE ELEMENT AND ACTING ON THE MOVABLE PLATE WHEREBY THE PRESENCE OF MOISTURE IS REFLECTED BY THE POSITION OF THE MOVABLE PLATE RELATIVE TO THE FRONT PLATE OF THE HOUSING, A CLOSED CONTAINER HAVING A TOP OPENING THEREIN NORMALLY CLOSED BY A HINGED COVER, A LATCH MEMBER DISPOSED WITHIN THE CONTAINER AND RELEASABLY ENGAGING THE COVER, THE TUBULAR STEM BEING PASSED THROUGH AN OPENING THEREFOR IN THE TOP OF THE CONTAINER AND EXTENDING UPWARDLY THEREFROM WHEREBY IT PROVIDES A SUPPORT FOR THE HOUSING, AND LINKAGE EXTENDING THROUGH THE TUBULAR STEM AND ACTING ON THE LATCH MEMBER IN RESPONSE TO THE ACTION OF THE FIRST MENTIONED LINKAGE.

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