Registers – Transfer mechanism – Traveling pawl
Patent
1975-06-19
1976-06-08
Malzahn, David H.
Registers
Transfer mechanism
Traveling pawl
235 92PE, 328 48, 3401462, H03K 2136
Patent
active
039625729
ABSTRACT:
A vibration gravitometer having leaf spring vanes located in respective cells in a thermally conductive block. Each cell contains a different gas at ambient atmospheric temperature and pressure. One cell contains air, the other a gas, the gravity of which is to be monitored, "gravity" being defined as the ratio of the density of the gas to the density of air at the same temperature and pressure. The gravity of one specific gas of constant composition is a constant. The vanes are vibrated at the same or different frequencies dependent upon the air and gas densities. These frequencies are multiplied and combined in a digital calculator that utilizes a frequency-time reciprocal to divide. A readout circuit multiplies the output of the calculator by a constant of proportionality and indicates the gravity.
REFERENCES:
patent: 3369183 (1968-02-01), Mester
patent: 3719897 (1973-03-01), Tarv
patent: 3818354 (1974-06-01), Tomisawa et al.
patent: 3824378 (1974-07-01), Johnson et al.
patent: 3824379 (1974-07-01), Tomisawa et al.
International Telephone and Telegraph Corporation
Malzahn David H.
Stolzy A. Donald
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