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Varel International Ind L p
Varel International Ind L p_20131212

Varel International Ind L p patents

Recent patent applications related to Varel International Ind L p. Varel International Ind L p is listed as an Agent/Assignee. Note: Varel International Ind L p may have other listings under different names/spellings. We're not affiliated with Varel International Ind L p, we're just tracking patents.

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Durable rock bit for blast hole drilling

A rock bit for blast hole drilling includes: a bit body having a coupling formed at an upper end thereof, a plurality of lower legs, a dome formed between the legs, and a bore formed through the coupling and the dome; a plurality of skirts, each skirt covering a gap... Varel International Ind L p

Bit for drilling with casing or liner string and manufacture thereof

A bit for drilling with a casing or liner string includes: a tubular stem made from a high strength metal or alloy; a head: having a cutting face with an inner cone, an outer shoulder, and an intermediate nose between the cone and the shoulder; attached to an end of... Varel International Ind L p

Thermomechanical testing of shear cutters

A method for testing thermal fatigue resistance of a shear cutter includes: engaging the shear cutter with a rotating target cylinder; moving the shear cutter along the rotating target cylinder until the shear cutter is heated to a threshold temperature; cooling the shear cutter in response to heating of the... Varel International Ind L p

Roller cone drill bit with improved erosion resistance

A method of manufacturing a roller cone for a drill bit includes: selectively carburizing a land of the roller cone between a plurality of spots on the land for protection against erosion; after carburization, forming sockets in the roller cone at the spots; and mounting cermet inserts in the sockets.... Varel International Ind L p

Hybrid roller cone and junk mill bit

A hybrid bit for use in a wellbore includes: a body having a shank for connection to a drilling motor or drill pipe and a plurality of legs attached to the shank; and a plurality of cutting structures. The cutting structures include a roller cone mounted to a first one... Varel International Ind L p

Modified surface properties of percussion tools used in downhole drilling

A system and method of fabricating a percussion tool that includes one or more surfaces modified using the ferritic nitrocarburization process. The percussion tool includes a piston positioned in sliding contact within a casing. The piston includes an inner wall and an outer wall, where the inner wall defines a... Varel International Ind L p

Apparatus to improve the performance of a leached cutter

A cleaned component having a polycrystalline structure, a method and apparatus for cleaning a leached component to form the cleaned component, and a method for determining the effectiveness of cleaning the leached component. The cleaned component includes a leached layer that has at least a portion of by-product materials removed.... Varel International Ind L p

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This listing is an abstract for educational and research purposes is only meant as a recent sample of applications filed, not a comprehensive history. is not affiliated or associated with Varel International Ind L p in any way and there may be associated servicemarks. This data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Varel International Ind L p with additional patents listed. Browse our Agent directory for other possible listings. Page by