Portable rapid and quiet drill
AssigneeThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration
InventorsYoseph Bar-Cohen, Mireca Badescu, Xiaoqi Bao, Zenshea Chang, Stewart Sherrit
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Abstract
A hand-held drilling device, and method for drilling using the device, has a housing, a transducer within the housing, with the transducer effectively operating at ultrasonic frequencies, a rotating motor component within the housing and rigid cutting end-effector rotationally connected to the rotating motor component and vibrationally connected to the transducer. The hand-held drilling device of the present invention operates at a noise level of from about 50 decibels or less.
Claims9
A hand-held drilling device, comprising:
- a housing constructed of materials that resist transmission or production of noise therethrough;
- a transducer within the housing which operates at ultrasonic frequencies from about 20 kHz to about 30 kHz;
- a rotating motor within the housing;
- and,
- a rigid cutting end-effector rotationally connected to the rotating motor and vibrationally connected to the transducer, wherein the hand-held drilling device operates at a noise level comprising about 50 decibels or less.
Dependencies are inferred from the claim text.