Temperature indicating device

A temperature indicating device for use in indicating when the temperature of said device has been changed to a predetermined temperature which comprises:

• a housing having an internal cavity and window means for exposing an indicator member located within the interior of said cavity to view from the exterior of said housing,
• snap spring means for rapidly changing from a first configuration to a second configuration when the temperature of said spring means is changed to said predetermined temperature located within said cavity,
• an indicator member located within said cavity above the bottom of said cavity so as to be physically held by said spring means so as to be visible through said window means against movement when said spring means is in said first configuration,
• said spring means in said second configuration being located so that said indicator member is not physically held by said spring means and is free to fall within said cavity so as to no longer be visible through said window means, and
• holding means for physically preventing said spring means from moving from said first configuration to said second configuration, said holding means engaging said spring means within the interior of said cavity and being capable of being moved so as to permit said spring means to change from said first to said second configuration,
• said housing has an opening from the exterior thereof into said cavity,
• said holding means comprising a pin extending into said cavity from the exterior of said housing through an opening in said housing, said pin being capable of being physically removed from said housing so as to permit said spring means to change in configuration.

A temperature indicating device for use in indicating when the temperature of said device has been changed to a predetermined temperature which comprises:

• a housing having an internal cavity and window means for exposing an indicator member located within the interior of said cavity to view from the exterior of said housing,
• snap spring means for rapidly changing from a first configuration when the temperature of said spring means is changed to said predetermined temperature located within said cavity,
• an indicator member located within said cavity above the bottom of said cavity so as to be physically held by said spring means so as to be visible through said window means against movement when said spring means is in said first configuration.
• said spring means in said second configuration being located so that said indicator member is not physically held by said spring means and is free to fall within said cavity so as to no longer be visible through said window means,
• said indicator member including means for indicating that said device has reached a temperature other than said predetermined temperature, said temperature indicating means being located so as to be visible through said window means when said indicator member is engaged by said spring means so as to hold said indicator member so that it is visible through said window means,
• said window means comprises a transparent portion of said housing,
• and including
• holding means for physically preventing said spring means from moving from said first configuration to said second configuration, said holding means engaging said spring means within the interior of said cavity and being capable of being moved so as to permit said spring means to change from said first to said second configuration,
• said housing has an opening from the exterior thereof into said cavity,
• said holding means comprising a pin extending into said cavity from the exterior of said housing through an opening in said housing, said pin being capable of being physically removed from said housing so as to permit said spring means to change in configuration.

A temperature indicating device for use in indicating when the temperature of said device has been changed to a predetermined temperature which comprises:

• a housing having an internal disk-shaped cavity having first and second sides and a periphery and window means for exposing an indicator member located within the interior of said housing located adjacent to the center of said first of said sides of said cavity,
• snap spring means for rapidly changing from a first configuration to a second configuration when the temperature of said spring means is changed to said predetermined temperature located within said cavity,
• said spring means comprising a bimetal disk, the sides of which are located adjacent to the sides of said cavity and the sides of which change in configuration when said spring means is heated to said predetermined temperature,
• an indicator member located within said cavity above the bottom of said cavity so as to be physically held by said spring means so as to be visible through said window means against movement when said spring means is in said first configuration,
• said spring means in said first configuration holding said indicator member in proximity to said window means,
• said spring means in said second configuration being located so that said indicator member is not physically held by said spring means and is free to fall within said cavity so as to no longer be visible through said window means.