BR7305126D0 - Aperfeicoamentos em trepano de sondagem - Google Patents

Aperfeicoamentos em trepano de sondagem

Info

Publication number
BR7305126D0
BR7305126D0 BR512673A BR512673A BR7305126D0 BR 7305126 D0 BR7305126 D0 BR 7305126D0 BR 512673 A BR512673 A BR 512673A BR 512673 A BR512673 A BR 512673A BR 7305126 D0 BR7305126 D0 BR 7305126D0
Authority
BR
Brazil
Prior art keywords
trepano
drilling
drilling trepano
Prior art date
Application number
BR512673A
Other languages
English (en)
Portuguese (pt)
Inventor
H Murdoch
Jr P Schumacher
Original Assignee
Reed Tool 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
Priority claimed from US00330412A external-priority patent/US3847234A/en
Application filed by Reed Tool Co filed Critical Reed Tool Co
Publication of BR7305126D0 publication Critical patent/BR7305126D0/pt

Links

BR512673A 1973-02-07 1973-07-10 Aperfeicoamentos em trepano de sondagem BR7305126D0 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00330412A US3847234A (en) 1972-06-01 1973-02-07 Pressure relief device for drill bit lubrication system

Publications (1)

Publication Number Publication Date
BR7305126D0 true BR7305126D0 (pt) 1974-09-24

Family

ID=23289651

Family Applications (1)

Application Number Title Priority Date Filing Date
BR512673A BR7305126D0 (pt) 1973-02-07 1973-07-10 Aperfeicoamentos em trepano de sondagem

Country Status (4)

Country Link
JP (1) JPS5937389B2 (cs)
BR (1) BR7305126D0 (cs)
DE (1) DE2332737A1 (cs)
NL (1) NL7308915A (cs)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5996387A (ja) * 1982-11-25 1984-06-02 スタ−ロイ産業株式会社 回転式ロツクビツト
JPS59178494U (ja) * 1983-05-13 1984-11-29 株式会社小松製作所 タ−ボドリルのメカニカルシ−ル装置
US4552228A (en) * 1984-02-21 1985-11-12 Varel Mfg. Co. Low pressure differential compensator
US4577705A (en) * 1984-04-23 1986-03-25 Smith International, Inc. Bellows lubricant pressurizer for sealed bearing rock bits
JPS6180884U (cs) * 1984-10-31 1986-05-29
US6092611A (en) * 1997-05-28 2000-07-25 Dresser Industries, Inc. Encapsulated elastomeric relief valve

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3719241A (en) * 1971-11-24 1973-03-06 Dresser Ind Free breathing lubrication system for sealed bearing rock bits

Also Published As

Publication number Publication date
DE2332737A1 (de) 1974-08-08
JPS49111802A (cs) 1974-10-24
JPS5937389B2 (ja) 1984-09-10
NL7308915A (cs) 1974-08-09

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