Sterilizer

A sterilizer for use in sterilizing articles removably received therein, including base means having a first thermal insulating block member having a predetermined volume and with a receiving cavity formed within said first block member;

• cover means including a second thermal insulating block member having a predetermined volume, said cover means being movable with respect to said base means for selectively covering said cavity;
• heating means received within said cavity and defining recess means for removably receiving therein an article to be sterilized, said heating means having a preselected volume relative to the volumes of said first and second block members for relatively slowly dissipating heat;
• and power control means for selectively applying electrical power to the said heating means for heating said heating means and for automatically cutting off the power to said heating means in response to a first predetermined temperature being reached by said heating means, said first and second insulating block members having relatively low thermal and electrical conductivity such that the combination of the ratio of the volume of said heating means to the volume of said insulating block members results in a relatively slow rate of heat loss enabling the temperature of said heating means not to fall below a second predetermined temperature, which is lower in value than the first predetermined temperature value, until a measured period of time has elapsed after the electric power has automatically been cut off to said heating means, whereby said second predetermined temperature remains above sterilization temperature for a time sufficient to effect sterilization.

A sterilizer for use in sterilizing articles removably received therein, including base means having a first thermal insulating block member having a predetermined volume and with a receiving cavity formed within said first block member;

• cover means including a second thermal insulating block member of predetermined volume and being movable with respect to said base means for selectively covering said cavity;
• heating means received within said cavity and defining recess means for removably receiving therein an article to be sterilized, said heating means includes a relatively large block having a preselected volume relative to the volumes of said first and second block members and which serves as a heat reservoir for relatively slowly dissipating heat;
• and power control means for selectively applying electrical power to the said heating means for heating said heating means, and including at least a thermal cutout device operatively connected to said metallic block for automatically stopping flow of electrical power thereto in response to a first predetermined temperature being reached by said metallic block, said first and second insulating block members having a relatively large volume and relatively low thermal and electrical conductivity such that the combination ratio of the volume of said heating means to the volume of said insulating block members results in a relatively slow rate of heat loss enabling the temperature of said heating means not to fall below a second predetermined temperature, which is lower in value than the first predetermined temperature, until a measured period of time has elapsed after the electric power has automatically been cut off to said heating means, whereby said second predetermined temperature remains above sterilization temperature for a time sufficient to effect sterilization.