1
Wayne L Matus: Sub assembly for a swivel. National Oilwell, R J Bunyard, L A Fillnow, R H Johnson, November 1, 1988: US04781359 (80 worldwide citation)

A sub assembly for connecting a power swivel to a drill string. The assembly includes a telescopic sub having a preloaded spring. The telescopic sub has three discrete positions enabling it to travel in either direction from a normal position. This capability prevents thread damage for both when con ...


2
Wim J van Ooij, Ashok Sabata: Steel sheet with enhanced corrosion resistance having a silane treated silicate coating. Armco Steel Company, R J Bunyard, L A Fillnow, R H Johnson, April 28, 1992: US05108793 (62 worldwide citation)

Steel sheet coated with a nontoxic, relatively insoluble, inorganic, corrosion resistant coating. A silicate coating is formed on a steel sheet by rinsing the sheet for at least 30 seconds in an alkaline aqueous solution containing 0.005 M silicate, 0.005 M metal salt and having a temperature of at ...


3
Wim J van Ooij, Ricole A Edwards, Ashok Sabata: Metallic coated steel having a siloxane film providing temporary corrosion protection and method therefor. Armco, R J Bunyard, L A Fillnow, R H Johnson, March 8, 1994: US05292549 (51 worldwide citation)

A metallic coated steel such as a galvanized sheet is coated with a thin siloxane film having a preferred thickness of about 45 .ANG. for providing temporary corrosion protection. The siloxane film is formed by rinsing the metallic coated sheet with an aqueous solution containing 0.5-2.0 vol. % sila ...


4
James C Pieper: Quick mounting snow plow assembly. Douglas Dynamics, R J Bunyard, R H Johnson, L A Fillnow, October 11, 1994: US05353530 (48 worldwide citation)

Detachably connecting a snow plow assembly (20) to a vehicle (22). The snow plow assembly includes a vehicle mount frame (28) and a lift assembly (30). The mount frame is for connecting to a vehicle frame (26) behind a front bumper (24). The lift assembly includes an A-frame (42) and a lift frame (4 ...


5
David M Kundrat: Method of reducing metal oxide in a rotary hearth furnace heated by an oxidizing flame. Armco, R J Bunyard, L A Fillnow, R H Johnson, October 22, 1996: US05567224 (34 worldwide citation)

Method of reducing metal oxide in a rotary hearth furnace (14) to make a feed stock for a refining vessel when manufacturing alloyed iron, alloyed steel or stainless steel. The rotary hearth furnace includes an annular inner refractory wall (32), an annular outer refractory wall (34), an annular ref ...


6
Wim J van Ooij, Ashok Sabata: Metal pretreated with an aqueous solution containing a dissolved inorganic silicate or aluminate, an organofuctional silane and a non-functional silane for enhanced corrosion resistance. Armco, R J Bunyard, L A Fillnow, R H Johnson, July 18, 1995: US05433976 (32 worldwide citation)

Painted metal sheet pretreated with an insoluble, composite layer containing siloxane. The composite layer is formed by rinsing the sheet with an alkaline solution containing at least 0.005M of a dissolved silicate or a dissolved aluminate, at least 0.1 vol.-% of an organofunctional silane and at le ...


7
Wim J van Ooij, Ashok Sabata: Metal sheet with enhanced corrosion resistance having a silane treated aluminate coating. Armco, R J Bunyard, L A Fillnow, R H Johnson, June 21, 1994: US05322713 (31 worldwide citation)

Metal sheet protected against corrosion by a silane treated inorganic aluminate coating. A thin aluminate coating was formed by immersing a galvanized steel sheet into an alkaline solution containing 0.005M dissolved aluminate for about 30 seconds. The sheet was dried to form an adherent aluminate c ...


8
Michael C Dinsdale: Apparatus for supporting a direct drive drilling unit in a position offset from the centerline of a well. National Oilwell, R J Bunyard, L A Fillnow, R H Johnson, August 13, 1991: US05038871 (30 worldwide citation)

Drilling equipment including apparatus for laterally moving a direct drive drilling unit to a position offset from the centerline of a well. The drilling equipment includes a traveling block suspended for generally vertical travel within a derrick during drilling of a well, a direct drive drilling u ...


9
Ashok Sabata, Wim J van Ooij: Metal pretreated with an inorganic/organic composite coating with enhanced paint adhesion. Armco, R J Bunyard, L A Fillnow, R H Johnson, July 5, 1994: US05326594 (30 worldwide citation)

Painted metal sheet pretreated with a composite coating including an insoluble, inorganic inner layer and an organic outer layer. The inorganic layer is formed by rinsing the sheet with an alkaline solution containing at least 0.005M of at least one of a dissolved silicate or a dissolved aluminate. ...


10
Herman H Hawkins: Fail-safe gate valve with separated actuators. National Oilwell, R J Bunyard, R H Johnson, L A Fillnow, March 7, 1989: US04809733 (25 worldwide citation)

A fail-safe gate valve assembly having a power actuator and a spring actuator disposed on opposite sides of a flowline. The assembly includes a valve body, a valve chamber including a gate movable between open and closed positions for controlling fluids through the flowline, a first housing containi ...