ZA821884B - A tread system - Google Patents

A tread system

Info

Publication number
ZA821884B
ZA821884B ZA821884A ZA821884A ZA821884B ZA 821884 B ZA821884 B ZA 821884B ZA 821884 A ZA821884 A ZA 821884A ZA 821884 A ZA821884 A ZA 821884A ZA 821884 B ZA821884 B ZA 821884B
Authority
ZA
South Africa
Prior art keywords
tread system
tread
Prior art date
Application number
ZA821884A
Inventor
Robert Wesley Hughes
Original Assignee
Ingersoll Rand Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ingersoll Rand Co filed Critical Ingersoll Rand Co
Publication of ZA821884B publication Critical patent/ZA821884B/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/042—Threaded
    • E21B17/0426—Threaded with a threaded cylindrical portion, e.g. for percussion rods
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
    • E21B21/011—Dust eliminating or dust removing while drilling
    • E21B21/012—Dust eliminating or dust removing while drilling using exhaust air from the drilling motor for blowing off the dust at the borehole entrance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/048—Type of gearings to be lubricated, cooled or heated
    • F16H57/0497—Screw mechanisms
ZA821884A 1981-03-19 1982-03-19 A tread system ZA821884B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US24531581A 1981-03-19 1981-03-19

Publications (1)

Publication Number Publication Date
ZA821884B true ZA821884B (en) 1983-06-29

Family

ID=22926170

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA821884A ZA821884B (en) 1981-03-19 1982-03-19 A tread system

Country Status (5)

Country Link
AU (1) AU8169182A (en)
CA (1) CA1167436A (en)
GB (1) GB2095360A (en)
SE (1) SE8201785L (en)
ZA (1) ZA821884B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19734763A1 (en) * 1997-08-12 1999-02-18 Bosch Gmbh Robert Tool holder for a hand machine tool and tool shank that can be used therein
US7591059B2 (en) 2005-09-13 2009-09-22 Weatherford/Lamb, Inc. Expansion activated anti-rotation device
DE102007038740B4 (en) * 2007-08-16 2012-02-02 ERÜ Kunststofftechnik GmbH Device for lubricating a screw gear and thus provided fine mechanical device

Also Published As

Publication number Publication date
SE8201785L (en) 1982-09-20
AU8169182A (en) 1982-09-23
GB2095360A (en) 1982-09-29
CA1167436A (en) 1984-05-15

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