Monitoring apparatus

Details Monitoring apparatus Monitoring apparatus

2011-06-21

2011-06-21

Kayes, Sean (Department: 2833)

Horology: time measuring systems or devices

Time interval

C368S327000

Reexamination Certificate

active

07963692

ABSTRACT:
A monitoring apparatus is disclosed for monitoring time by a color change indicator, comprising an observable fluid, a first reservoir holding at least a portion of the observable fluid, and a second reservoir abutting the first reservoir. The first reservoir is responsive to pressure on it such that a portion of the observable fluid flows into the second reservoir. The second reservoir is responsive to a lack of pressure in the first reservoir such that a portion of the observable fluid in the second reservoir reverses flow back into the first reservoir once the first reservoir is not under pressure.

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