Methods and apparatus employing torsionally vibratory energy

• US 3,131,515 A
• Filed: 01/04/1960
• Issued: 05/05/1964
• Est. Priority Date: 01/04/1960
• Status: Expired due to Term

• Current Assignee: Warren P. Mason
• Original Assignee: Warren P. Mason
• Inventors: Mason, Warren P.
• Application Number:
  US04/000,090
• Time in Patent Office: 1,583 Days
• US Class Current: 451/28
• CPC Class Codes: B06B 3/02 involving a change of amplitude
• CPC Class Codes: G01N 2291/02818 Density, viscosity
• CPC Class Codes: G01N 29/02 Analysing fluids using acoustic emission techniques G01N29/14 ; constructional or flow details for analysing fluids G01N29/222; optoacoustic fluid cells G01N29/2425
• CPC Class Codes: G01N 9/002 using variation of the resonant frequency of an element vibrating in contact with the material submitted to analysis G01N9/34 takes precedence
• CPC Class Codes: Y10T 408/03 Processes
• CPC Class Codes: Y10T 74/10 High frequency vibratory devices

Claims

3. A DRILLING DEVICE COMPRISING A LONGITUDINALLY TAPERED RESILIENT ROD HAVING A LENGTH OF AN INTEGRAL NUMBER OF HALF WAVELENGTHS OF A TORSIONALLY VIBRATORY ENERGY WAVE OF A PREDETERMINED FREQUENCY, THE TAPERED ROD HAVING A MAXIUM DIAMETER NOT GREATER THAN THAT SPECIFIED BY THE RELATION 2A=(3/4)(5.136V/PI F) WHERE A IS THE MAXIMUM RADIUS OF THE ROD, F IS THE FREQUENCY OF THE TORSIONAL DRIVING ENERGY AND V IS THE VELOCITY OF THE TORSIONAL WAVES IN THE ROD, A DRILLING BIT FASTENED TO THE SMALLER END OF THE ROD, AND MEANS FOR DRIVING THE LARGER END OF THE ROD BY TORSIONALLY VIBRATORY ENERGY OF THE PREDERTERMINED FREQUENCY.