37208 ⎘
Indexing scheme associated with for details covered by but not provided for in any of its subgroups; Specific application Drilling
VIBRATORY COMPACTOR
#2PNEUMATIC VIBRATION DEVICE WITH ROTATABLE PISTON SHAFT
#3DOWNHOLE TRANSDUCER WITH A PIEZOELECTRIC CRYSTAL MATERIAL
#4VIBRATORY COMPACTOR
#5Fastening structure of ultrasonic resonator and ultrasonic machining device
#6Air layer for improved performance of transducer at low frequencies
#7ACOUSTIC TRANSDUCER AND METHOD OF MANUFACTURING
#8Spindle with piezoelectric actuators
#9Vibratory compactor
#10Method and device for controlling an ultrasound tool unit for machining on a machine tool
#11Vibratory compactor
#12Vibratory compactor
#13Ultrasonic cutting holder for honeycomb core
#14Ultrasonic transducer for measuring wellbore characteristics
#15Vibratory compactor
#16Ultrasonic transducer with reduced backing reflection
#17Methods and apparatus for coiled tubing inspection by ultrasound
#18Method and apparatus for pre-loading a piezoelectric transducer for downhole acoustic communication
#19Single-mass, one-dimensional resonant driver
#20Agitator for use with a drill string
#21Ultrasonic transducer with suppressed lateral mode
#22A THROUGH BIT DIPOLE ACOUSTIC LOGGING TRANSMITTER AND A LOGGING DEVICE
#23Dual frequency ultrasonic and sonic actuator with constrained impact mass
#24Method and apparatus for pre-loading a piezoelectric transducer for downhole acoustic communication
#25Downhole acoustic emitter
#26Mitigating Current At Startup Of Ultrasonics
#27Device and method for generating percussive pulses or vibrations for a construction machine
#28OSCILATION EXCITATION METHOD FOR LANGEVIN ULTRASONIC TRANSDUCER, ULTRASONIC MACHINING METHOD, AND ULTRASONIC TRANSMISSION METHOD
#29Ultrasonic transducers with piezoelectric material embedded in backing
#30Acoustic transmitter for transmitting a signal through a downhole medium
#31Vibratory compactor