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Patient position monitoring system

  • US 4,638,307 A
  • Filed: 10/15/1985
  • Issued: 01/20/1987
  • Est. Priority Date: 10/15/1985
  • Status: Expired due to Fees
First Claim
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1. Apparatus for issuing an alarm when a weight is lifted from a pad switch assembly, said apparatus comprising a comressible pad, a thin sealed reed switch affixed on one side of said pad, and a magnet affixed on the opposite side of said pad in approximate close parallel registry with said reed switch, said reed switch being connected in an electrical circuit containing a power source and an alarm issuing means such that when said pad is compressed by a weight causing said magnet to be in closer proximity to said switch, the circuit is open and no alarm issues, but when said weight is lifted and said pad decompresses causing said magnet to move away from close proximity to said reed switch, the circuit closes and said alarm issues.

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