Apparatus for measuring the fall height of a pile driver ram

Details Apparatus for measuring the fall height of a pile driver ram Apparatus for measuring the fall height of a pile driver ram

1979-05-07

1981-06-02

Wise, Edward J.

Boots, shoes, and leggings

73 11, 73 12, G06F 1520

Patent

active

042714753

ABSTRACT:
An apparatus for automatically calculating the fall height of the ram of a pile driver is disclosed. The apparatus includes a device for converting the sound created by each blow of the pile driver ram into an electrical signal, a first circuit for converting signal into a pulse and a second circuit for converting the time elapsed between the pulses for consecutive blows into a digital output representing the fall height of the ram for the blow corresponding to the latter pulse. The digital electronic circuit may also include circuitry for counting the number of blows in a sequence of blows and circuitry for determining the average fall height for the blows occurring during the sequence.

REFERENCES:
patent: 2580299 (1951-12-01), Hunicke
patent: 3340501 (1967-09-01), Georgi et al.
patent: 3498388 (1970-03-01), Jovis
patent: 3504370 (1970-03-01), Rebilly
patent: 3526874 (1970-09-01), Schwartz
patent: 3759085 (1973-09-01), Wilson et al.
patent: 3838428 (1974-09-01), Benson et al.
patent: 3900826 (1975-08-01), Dowling et al.
patent: 3930248 (1975-12-01), Keller

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