US PATENT SUBCLASS 428 / 616
.~.~ Deflectable by temperature change (e.g., thermostat element)

Current as of: June, 1999
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428 /   HD   STOCK MATERIAL OR MISCELLANEOUS ARTICLES

544  DF  ALL METAL OR WITH ADJACENT METALS {31}
615  DF  .~ Composite; i.e., plural, adjacent, spatially distinct metal components (e.g., layers, joint, etc.) {15}
616.~.~ Deflectable by temperature change (e.g., thermostat element) {3}
617  DF  .~.~.~> More than two components
618  DF  .~.~.~> One component Cu-based
619  DF  .~.~.~> Both components Fe-based with more than 10% Ni

DEFINITION

Classification: 428/616

(under subclass 615) Subject matter having the property of bending or lengthening in a circular fashion in response to an increase in temperature.

(1) Note. A patent is placed in this subclass (616) because of the ability of a composite to respond, shape-wise, to a temperature change. Responses to other phenomena, e.g., magnetostrictive properties, are not, in themselves, relevant to this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

686, for other composite material defined by the function of adjacent components.

913, for a collection of nonmetallic* stock-material* designed to be responsive to temperature, light, moisture, etc. Patents classified in subclass 616 should not be cross-referenced to subclass 913 on the basis of temperature-responsive characteristics.

SEE OR SEARCH CLASS

60, Power Plants, 529, for thermostatic devices which include, besides the bimetallic element, significant structure designed for temperature responsiveness, such as the mounting for an end of the strip or the shape given the strip to constitute the device.

136, Batteries: Thermoelectric and Photoelectric,

200+, for thermocouple (junction-type) stock-material* which produces an electric current in response to heat.

337, Electricity: Electrothermally or Thermally Actuated Switches,

333+, for such switches having a bimetallic element, and the notes thereto for the location of other devices having bimetallic elements, and subclass 379 for an article* which is a bimetallic element for such switch.

374, Thermal Measuring and Testing,

205, for a thermometer having a bimetallic sensor.