IPC Subgroup
G05D 23/01 without auxiliary power
Introduced: September 1968
Last revised: January 2006
Full Title
Control of temperature > without auxiliary power
Classification Context
- Section:
- PHYSICS
- Class:
- CONTROLLING; REGULATING
- Subclass:
- SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
3 direct subcodes
Child Classifications
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- G05D 23/02 with sensing element expanding and contracting in response to changes of temperature
- G05D 23/12 with sensing element responsive to pressure or volume changes in a confined fluid
- G05D 23/13 by varying the mixing ratio of two fluids having different temperatures