Sensors and methods for detecting attachment to a surface

  • US 7,242,299 B2
  • Filed: 09/08/2005
  • Issued: 07/10/2007
  • Est. Priority Date: 02/05/2003
  • Status: Active Grant
First Claim
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1. A sensor for detecting attachment to a surface, comprising:

  • a housing having an inner surface, an outer surface and a passage extending through the housing;

    a member having a first portion sized to extend through the passage and a second enlarged portion that cannot extend through the passage; and

    at least one electrical contact operably located within the housing between the enlarged portion of the member and housing, so that when the member is coupled to the surface to attach the sensor to the surface, the enlarged portion of the member causes the contact to complete an electrical circuit.

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