(under subclass 52) Dispensers, in which the condition sensing means is either soluble in a liquid or is responsive to a change in temperature.
SEE OR SEARCH CLASS
49, Movable or Removable Closures, sub- classes 1+ for a thermal control for closures.
109, Safes, Bank Protection, or a Related Device, particularly
33, for fusible, combustible or thermal actuators.
119, Animal Husbandry, 73, for temperature controlled watering devices.
122, Liquid Heaters and Vaporizers,
504.1, and 504.3 for fusible safety devices.
126, Stoves and Furnaces,
287.5, for fusible release dampers.
137, Fluid Handling,
59+, for freeze condition responsive safety systems; subclasses 65+ for combustion failure responsive fuel safety cut-offs; subclasses 67+ for frangible, fusible or soluble control elements; subclasses 79+ for atmospheric temperature change responsive control; subclass 457 for thermally responsive safetycut-offs requiring reset; and subclass 468 for valves responding automatically to changed thermal condition of the fluid controlled.
160, Flexible or Portable Closure, Partition, or Panel,
1+, for both thermal and soluble actuators.
169, Fire Extinguishers, appropriate subclasses, particularly
42, for fusible connections, 56+ for condition responsive controls.
184, Lubrication, 68, for thermostatic cut-offs for gravity feed lubricators.
220, Receptacles,
89.1, 89.4 for frangible or fusible safety attachments.
236, Automatic Temperature and Humidity Regulation, which includes valves actuated by temperature responsive means and
especially
12.1+, for automatic mixture control by temperature or heat content.
337, Electricity: Electrothermally or Thermally Actuated Switches, appropriate subclasses for electrothermal or thermally actuated switches.
374, Thermal Measuring and Testing,
100+, for a thermometer.
454, Ventilation,
28, for a thermally released outlet cowl and subclass 369 for thermally actuated fire dampers used in ventilating systems.
