US2012196782A1PendingUtilityA1

Rock Drill Oil

56
Assignee: OKAZAKI MARKPriority: Jan 28, 2011Filed: Jan 28, 2011Published: Aug 2, 2012
Est. expiryJan 28, 2031(~4.5 yrs left)· nominal 20-yr term from priority
Inventors:Mark E. OkazakiAllen Hee
C10M 2205/173C10N 2040/04C10M 169/04C10M 2219/00C10N 2030/12C10M 2205/0285C10M 2207/28C10M 2219/024C10N 2020/02C10M 2219/022C10M 2207/289C10N 2030/10C10M 2203/1025C10M 2219/02C10N 2030/06
56
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Claims

Abstract

Provided is a lubricating oil composition suitable for use in rotary pneumatic and reciprocating tools, comprising a Fischer-Tropsch base oil, a friction modifier based on synthetic ester and a sulfurized extreme pressure agent. The present lubricating oil composition has superior wear, friction and extreme pressure characteristics.

Claims

exact text as granted — not AI-modified
1 . A lubricating oil composition for use in rotary pneumatic and reciprocating tools, comprising a Fischer-Tropsch base oil, a friction modifier based on a synthetic ester, and a sulfurized extreme pressure agent. 
     
     
         2 . The lubricating oil composition of  claim 1 , wherein the composition further comprises an emulsifier. 
     
     
         3 . The lubricating oil composition of  claim 1 , wherein the composition further comprises a copper corrosion inhibitor. 
     
     
         4 . The lubricating oil composition of  claim 2 , wherein the composition further comprises a copper corrosion inhibitor. 
     
     
         5 . The lubricating oil composition of  claim 1 , wherein a Viscosity Index (VI) of the Fischer-Tropsch base oil is at least 120. 
     
     
         6 . The lubricating oil composition of  claim 5 , wherein the Viscosity Index (VI) of the Fischer-Tropsch base oil is at least 150. 
     
     
         7 . The lubricating oil composition of  claim 1 , wherein the Fischer-Tropsch base oil is blended with another Fischer-Tropsch base oil. 
     
     
         8 . The lubricating oil composition of  claim 1 , wherein the Fischer-Tropsch base oil has a viscosity of at least 120 and the composition further comprises an emulsifier and a copper corrosion inhibitor. 
     
     
         9 . The lubricating oil composition of  claim 1 , wherein the Fischer-Tropsch base oil comprises at least 70 wt. % of the lubricating oil composition. 
     
     
         10 . The lubricating oil composition of  claim 1 , wherein the Fischer-Tropsch base oil comprises at least 90 wt. % of the lubricating oil composition. 
     
     
         11 . The lubricating oil composition of  claim 1 , wherein the Fischer-Tropsch base oil comprises at least 95 wt. % of the lubricating oil composition. 
     
     
         12 . The lubricating oil composition of  claim 1 , wherein the composition has a true load value at which failure occurs in the Falex Pin and Vee Block Method Test of at least 3600 lb. 
     
     
         13 . The lubricating oil composition of  claim 1 , wherein the composition has a true load value at which failure occurs in the Falex Pin and Vee Block Method Test of at least 3700 lb. 
     
     
         14 . The lubricating oil composition of  claim 1 , wherein the composition has a passing result in the 4-hour Tort B rust test. 
     
     
         15 . The lubricating oil composition of  claim 1 , wherein the composition has a passing result in the 24-hour Tort B rust test. 
     
     
         16 . The lubricating oil composition of  claim 1 , wherein the composition has a VI greater than 120. 
     
     
         17 . The lubricating oil composition of  claim 1 , wherein the composition has a VI greater than 150. 
     
     
         18 . The lubricating oil composition of  claim 1 , wherein the composition has a color less than 0.5. 
     
     
         19 . A rotary pneumatic or reciprocating tool, comprising the lubricating oil composition of  claim 1  as its lubricating oil. 
     
     
         20 . The tool of  claim 19 , wherein the tool is a rock drill. 
     
     
         21 . The tool of  claim 19 , wherein the tool is a jack hammer. 
     
     
         22 . A system of enclosed industrial gears, comprising the lubricating oil composition of  claim 1  as the lubricant.

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