Thermal delay demand defrost system
US4344294A · kind A · utility
15Cited by
11References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 31, 1980 |
| Grant date | Aug 17, 1982 |
| Priority date | — |
| Expiry date | Jul 31, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25D2700/12
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A demand defrost control system having a timing circuit operable after a duration of time to energize a defrost heater including temperature responsive means for automatically altering the duration of time between defrost cycles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.