Ultrasonic annular core bit

Details Ultrasonic annular core bit Ultrasonic annular core bit

2005-09-27

2005-09-27

Bagnell, David (Department: 3672)

Boring or penetrating the earth

Bit or bit element

Core forming type

C175S055000, C175S056000, C408S204000, C408S206000, C408S207000

Reexamination Certificate

active

06948574

ABSTRACT:
A core bit for abrasive cutting including a cylindrical tube (3) provided at its end surface with cutting or abrasive bodies (2) and a cover (4) provided at an opposite end surface of the cylindrical tube (3) and secured thereto and having, along its central axis (A), a shank (5) to be received in a rotary power tool, with the cover (4) being dimensioned, with respect to a set excitation frequency, for forming a whole number of maximum amplitude oscillations of a concentric flexural oscillation, and the cylindrical tube (3) being dimensioned, with respect to a set excitation frequency, for forming a whole number of maximum amplitude oscillations of axial longitudinal oscillations.

REFERENCES:
patent: 4697117 (1987-09-01), Mishiro
patent: 4828052 (1989-05-01), Duran et al.
patent: 4966502 (1990-10-01), Magyari
patent: 5171111 (1992-12-01), Kishimoto
patent: 5733074 (1998-03-01), Stoeck
patent: 5813802 (1998-09-01), Ajimi et al.

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