Boots – shoes – and leggings
Patent
1977-01-11
1978-06-13
Ruggiero, Joseph F.
Boots, shoes, and leggings
23230R, 23253R, 204 1T, 204195T, 364579, G06G 758, G01N 3116
Patent
active
040952720
ABSTRACT:
The turbidity of the medium being titrated is continuously measured and an analog signal representative thereof is differentiated. The resulting first derivative signal is compared with a reference signal to produce a control signal when the derivative signal has a predetermined relationship to the reference signal. A titration end point signal, representative of the amount of titrant added to the medium being titrated in order to achieve said predetermined relationship, is produced responsive to said control signal.
REFERENCES:
patent: 3266504 (1966-08-01), Sundstrom
patent: 3499733 (1970-03-01), Abbott et al.
patent: 3626742 (1971-12-01), Hogan et al.
patent: 3663176 (1972-05-01), Cagle et al.
patent: 3765841 (1973-10-01), Paulson et al.
patent: 3769178 (1973-10-01), Rothermel, Jr.
patent: 3870466 (1975-03-01), Rellstab et al.
patent: 3879604 (1975-04-01), Malmuig
patent: 3881992 (1975-05-01), Ralston
Sargent-Malmstadt Automatic Spectro/Electro Titrator - Instruction Manual - Catalog No. 29700 - E. H. Sargent & Co.
Spectronics Incorporated - "Optical Switches"- Bulletin Clairex Electronics Bulletin-Optical Switches, Jun. 1975.
Markus - "Electronic Circuits Manual"- McGraw-Hill, 1971.
Lambert-"Volumetric Analysis of Colloidal Electrolytes by Turbidity Titration"- Journal of Colloid Science, vol. 2, pp. 479-493, (1974).
Phillips Petroleum Company
Ruggiero Joseph F.
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