RELEASE ASSEMBLY AND METHOD OF FORMING DRILLING TOOL

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United States of America Patent

APP PUB NO 20150117940A1
SERIAL NO

14526968

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A release assembly and a method of forming a drilling tool for rock or overburden drilling is provided. The release assembly is arranged axially between two drilling tool components. The release assembly includes a release mechanism allowing an initial axial length to shorten when a joint of the drilling tool components provided with connecting threads is turned in an opening direction. The release assembly has a decreased second axial length and friction forces in the joint decrease.

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Patent Owner(s)

Patent OwnerAddress
SANDVIK MINING AND CONSTRUCTION OYPIHTISULUNKATU 9 TAMPERE 33330

International Classification(s)

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  • 2014 Application Filing Year
  • E21B Class
  • 4199 Applications Filed
  • 3550 Patents Issued To-Date
  • 84.55 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances20142015201620172018201920202021202220230255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
ESKO, Mauri Ikaalinen, FI 19 86
KESKINIVA, Markku Ylinen, FI 33 135

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Patent Citation Ranking

  • 0 Citation Count
  • E21B Class
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  • 10 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges716301737036231515161174301 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 8081 - 9091 - 100100 +050100150200250300350400450500550600650700

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