Registers – Calculators – Single axis
Patent
1980-03-31
1982-01-26
Hix, L. T.
Registers
Calculators
Single axis
G06C 2700
Patent
active
043130542
ABSTRACT:
A circular slide rule type calculator is disclosed for calculating various parameters useful in determining operating characteristics of an air conditioning or refrigeration system. A series of four discs each having scales are used to calculate power consumption, load and part load performance factors.
REFERENCES:
patent: 2373671 (1945-04-01), Feicht
patent: 2591058 (1952-04-01), Freeman
patent: 3654436 (1972-04-01), Sansom, Jr.
Carrier Corporation
Curtin J. Raymond
Fuller Benjamin R.
Hayter Robert P.
Hix L. T,.
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