1
Robert E Grimes, Rudolf Carl Otto Pessier, Christopher J Rohmer: Earth-boring bit having improved cutting structure. Baker Hughes, Robert A Felsman, Mark D Perdue, December 16, 1997: US05697462 (96 worldwide citation)

A bit body has at least one cantilevered bearing shaft depending inwardly and downwardly from the bit body. A cutter is mounted for rotation on the bearing shaft and includes a plurality of cutting elements arranged in generally circumferential rows on the cutter, the rows including a heel row. The ...


2
Robert E Grimes, Danny E Scott, Rudolf C O Pessier: Fixed cutter bit with shear cutting gage. Baker Hughes Incorporated, Robert A Felsman, Mark D Perdue, November 21, 1995: US05467836 (91 worldwide citation)

An earth-boring bit of the fixed cutter variety is provided with hard gage inserts that protrude from the gage surface of the cutter to engage the side of the borehole for holding gage. The gage insert has a substantially flat, polygonal face defining at least a pair of sharp cutting edges and at le ...


3
Danny E Scott, Robert E Grimes, Matthew R Isbell, Rudolf C O Pessier: Earth-boring bit with improved cutting structure. Baker Hughes Incorporated, Robert A Felsman, Mark D Perdue, January 2, 1996: US05479997 (91 worldwide citation)

An earth-boring bit has a bit body and at least one cutter rotatably secured to the bit body. The cutter has a cutter shell surface including a gage surface intersecting a heel surface. A plurality of hard metal inserts are arranged in generally circumferential rows on the cutter and include a heel ...


4
Robert E Grimes, Danny E Scott: Rolling cone bit with shear cutting gage. Baker Hughes Incorporated, Felsman Bradley Gunter & Dillon, February 22, 1994: US05287936 (78 worldwide citation)

A cutter of an earth-boring bit is provided with hard gage inserts that protrude from the gage surface of the cutter to engage the side of the borehole for holding gage. The gage insert has a substantially flat face with sharp cutting edges formed thereon and has cutting surfaces that define a negat ...


5
Danny E Scott, Robert E Grimes, Matthew R Isbell, Rudolf C O Pessier: Earth-boring bit with improved cutting structure. Baker Hughes Incorporated, Robert A Felsman, Mark D Perdue, October 4, 1994: US05351768 (67 worldwide citation)

An earth-boring bit has a bit body and at least one cutter rotatably secured to the bit body. The cutter has a cutter shell surface including a gage surface intersecting a heel surface. A plurality of hard metal inserts are arranged in generally circumferential rows on the cutter and include a heel ...


6
Robert L Carrick, William T Manning, Robert E Grimes: Signal classifier. Telcom, Ira C Edell, October 7, 1980: US04227255 (50 worldwide citation)

A signal classifier performs measurements on an IF signal and determines from these measurements the nature of the modulation, if any, appearing on a received high frequency communications signal. The classifier distinguishes between double sideband AM, single sideband suppressed carrier voice AM, A ...


7
Rudolf C O Pessier, Danny E Scott, Robert E Grimes, Matthew R Isbell: Earth-boring bit with improved cutting structure. Baker Hughes Incorporated, Robert A Felsman, Mark D Perdue, August 6, 1996: US05542485 (39 worldwide citation)

An earth-boring bit has a bit body and at least one cutter rotatably secured to the bit body. The cutter has a cutter shell surface including a gage surface and a heel surface. A plurality of cutting elements inserts are arranged in generally circumferential rows on the cutter. At least one chisel-s ...


8
Matthew R Isbell, Rudolf C O Pessier, Robert E Grimes: Earth-boring bit with an advantageous insert cutting structure. Baker Hughes Incorporated, Felsman Bradley Gunter & Dillon, June 28, 1994: US05323865 (32 worldwide citation)

An earth-boring bit is provided with three cutters, at least one of the three cutters are provided with a heel cutting structure defined by a plurality of heel inserts having crests thereon, the heel inserts being disposed in at least one substantially circumferential heel row and the crests of the ...


9
James L Overstreet, Robert E Grimes, Brian A Baker, Matthew J Meiners: Hybrid rock bit. Baker Hughes Incorporated, James E Bradley, November 9, 1999: US05979575 (9 worldwide citation)

An earth-boring bit has a rotating cutter of a hybrid design. The bit has a bit body and a bearing shaft which is cantilevered downwardly and inwardly from the bit body. The cutter is mounted for rotation on the bearing shaft and has a plurality of cutting elements arranged in circumferential rows o ...


10
Glenn R Zadrapa, Gregory L Ricks, Kenneth C Brannon, Robert E Grimes, Kevin W Schader: Inclined leg earth-boring bit. Baker Hughes, James E Bradley, Bracewell & Patterson L, May 8, 2001: US06227314 (8 worldwide citation)

An earth-boring bit has a body with a threaded pin on the upper end for connecting to a drill string. Bit legs are formed symmetrically on the exterior of the body and extend downward. The lower portion of each bit leg is inclined and offset circumferentially from the upper portion. A cutter is moun ...