Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
209 words
A device for testing the level, uniformity and duration of the temperature in apparatus for sterilizing articles used in hospitals and the like to indicate if incomplete sterilization has occurred owing to the formation of air pockets or the like, said device comprising: unitary support means of substantially flat sheet form adapted to be placed adjacent to articles to be sterilized in said sterilization apparatus, first temperature responsive means mounted in a predetermined pattern on one surface of said support means and extending from the center portion to the edge portions thereof, said first means covering a substantial area of said one surface and extending in more than one direction edge to edge on said one surface, said first means being adapted to change conditions when exposed to a predetermined temperature to indicate the uniformity of the temperature to which said one surface of said support means is exposed, and second temperature responsive means mounted on said support means substantially at the center portion thereof, said second means comprising a material that changes condition when exposed to a selected temperature for a predetermined time period, whereby said second means indicates whether said selected temperature is reached for said predetermined time period at the center portion of said support means.
Claim 2
Independent Claim
209 words
A device for testing the level, uniformity and duration of the temperature in apparatus for sterilizing articles used in hospitals and the like to indicate if incomplete sterilization has occurred owing to the formation of air pockets or the like, said device comprising: unitary support means of substantially flat sheet form adapted to be placed adjacent to articles to be sterilized in said sterilization apparatus, first temperature responsive means mounted in a predetermined pattern on one surface of said support means and extending from the center portion to the edge portions thereof, said first means covering a substantial area of said one surface and extending in more than one direction edge to edge on said one surface, said first means being adapted to change conditions when exposed to a predetermined temperature to indicate the uniformity of the temperature to which said one surface of said support means is exposed, and second temperature responsive means mounted on said support means substantially at the center portion thereof, said second means comprising a material that changes condition when exposed to a selected temperature for a predetermined time period, whereby said second means indicates whether said selected temperature is reached for said predetermined time period at the center portion of said support means.
Claim 3
Dependent Claim
14 words
The testing device of claim 1 wherein said support means is formed of paper.
Claim 4
Dependent Claim
24 words
The testing device of claim 1 wherein said first means comprises a temperature responsive material imprinted on said one surface of said support means.
Claim 5
Dependent Claim
26 words
The testing device of claim 1 wherein said first means comprises a tape of temperature responsive material secured to said one surface of said support means.
Claim 6
Dependent Claim
29 words
The testing device of claim 1 wherein said second temperature responsive means comprises a fusible material that fuses when exposed to said selected temperature for said predetermined time period.
Claim 7
Dependent Claim
33 words
The testing device of claim 5 wherein said second means further comprises a transparent envelope enclosing said fusible material, said envelope being secured to said support means substantially at the center portion thereof.