Apparatus to indicate when a patient has evacuated a bed or demonstrates a restless condition
Patent 4295133 Issued on October 13, 1981. Estimated Expiration Date: 
October 13, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 13, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorApplicationNo. 05/949969 filed on 10/10/1978US Classes:340/573.4, House arrest system, wandering, or wrong place340/575, Sleep340/636.15, By voltage340/666, Weight340/667, On seat5/940WITH ALARM MEANSExaminersPrimary: Swann, III, Glen R.Attorney, Agent or FirmInternational ClassesA61B 5/11 (20060101)G08B 21/00 (20060101) G08B 21/22 (20060101) AbstractA switch placed in a bed under a patient comprises two spaced parallel strips of insulating material carrying contact means therebetween. When the strips are straight the switch is closed, and when the strips are bent into an arc the switch is open. The closing of the switch starts an electrical oscillator, which activates a counter, and at a selected count a latch is set to actuate an alarm.Other References
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