Measuring and testing – Hardness – By penetrator or indentor
Patent
1999-05-06
2000-01-11
Noland, Thomas P.
Measuring and testing
Hardness
By penetrator or indentor
E02D 100
Patent
active
060123281
ABSTRACT:
In a method for determining depth when putting in place supporting elements into a waterbed, a pressure sensor fastenable to a supporting element or a device connected to the supporting element measures a water pressure, the reading is supplied by the pressure sensor and transmitted via signal lead to an evaluating unit which determines the penetration depth of the supporting element from the reading differences which occur during the sinking of the pressure sensor on penetration of the supporting element into the waterbed.
REFERENCES:
patent: 3148538 (1964-09-01), Heerena
patent: 3455151 (1969-07-01), Richard
patent: 4217709 (1980-08-01), Casciano
Menck GmbH
Noland Thomas P.
Striker Michael J.
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