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Rain switch

  • US 5,101,083 A
  • Filed: 08/17/1990
  • Issued: 03/31/1992
  • Est. Priority Date: 08/17/1990
  • Status: Expired due to Fees
First Claim
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1. An improved rain switch for use in an irrigation system, which comprises:

  • (a) an elongated housing having a connecting portion which is suited to be secured to a support and a slotted or apertured portion adjacent to the connecting portion;

    (b) an electrical switch contained within the connecting portion of the housing;

    (c) a moisture absorptive assembly contained within the slotted or apertured portion of the housing, wherein the moisture absorptive assembly expands upon absorbing rain water to actuate the switch thereby preventing the irrigation system from operating when it is raining, wherein the moisture absorptive assembly is located within the slotted or apertured portion of the housing in a position for allowing rain water to reach and wet the assembly; and

    (d) wherein the housing is substantially L-shaped with the connecting portion substantially at right angles relative to the slotted or apertured portion, whereby the slotted or apertured portion can be spaced to one side of the connecting portion so as not to overlie the connecting portion when the connecting portion is secured to the support.

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