Vibration detecting apparatus and noise absorbent member

Details Vibration detecting apparatus and noise absorbent member Vibration detecting apparatus and noise absorbent member

1997-06-10

1999-09-28

Williams, Hezron

Measuring and testing

Vibration

By mechanical waves

73649, 181206, G01H 1106

Patent

active

059592109

ABSTRACT:
The vibration detecting apparatus comprises a pickup 2 encasing a piezoelectric element 8 therein, a cord 3 for transmitting an electric signal output by said piezoelectric element 8, and a noise absorbent member 4 in the form of a lump made of rubber, and formed therein with a cord insert path having at least one direction-changing portion 14a, said noise absorbent member being mounted at a suitable position of said cord. The noise absorbent member is preferably made of low repulsion elastic rubber and is preferably spherical. The cord inser path 14 is preferably in the shape of substantially U. According to the aforementioned construction, noises such as a wind-cut sound and a frictional sound generated at the cord can be effectively removed.

REFERENCES:
patent: 3458656 (1969-07-01), Sewerin
patent: 4125238 (1978-11-01), Tanaka
patent: 4309576 (1982-01-01), Corrigan
patent: 4577496 (1986-03-01), Grover et al.
patent: 4911012 (1990-03-01), Ziska
patent: 5243127 (1993-09-01), Kitagawa
patent: 5324207 (1994-06-01), Itoh et al.

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