Electrical pulse counters – pulse dividers – or shift registers: c – Applications – Measuring or testing
Patent
1988-03-18
1990-01-23
Heyman, John S.
Electrical pulse counters, pulse dividers, or shift registers: c
Applications
Measuring or testing
73 81, G01N 342
Patent
active
048963399
ABSTRACT:
A material testing machine includes two detecting means of indenter pressing force detecting means provided with a displacement detector or a strain gage type detector and amount of penetration detecting means provided with a displacement detector. When it is detected by a pulse that the output of the detector of the indenter pressing force detecting means has reached a predetermined value, the output of the detector of the amount of penetration detecting means is latched by the pulse and latched output is used as the output of the amount of pentration detecting means. In a further embodiment, the two detectors are provided with a pulse generator and counting means for counting pulses generated therefrom. When it is detected by a pulse that the output of the detector of the indenter pressing force detecting means has reached a predetermined value the counting means of the amount of penetration detecting means is controlled by the pulse and the output of the counting means is used as the output of the amount of penetration detecting means.
REFERENCES:
patent: 4094188 (1978-06-01), Bellouin et al.
patent: 4111039 (1978-09-01), Yamawaki et al.
patent: 4312220 (1982-01-01), Borgersen et al.
patent: 4535623 (1985-08-01), Gilberto
Heyman John S.
Matsuzawa Seiki Kabushikikaisha
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